annotate Lib/test/test_long.py @ 82251:bb5a8564e186 2.7

Issue #13153: Tkinter functions now raise TclError instead of ValueError when a unicode argument contains non-BMP character.
author Serhiy Storchaka <storchaka@gmail.com>
date Mon, 18 Feb 2013 13:00:08 +0200
parents eb1734e579f7
children
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1 import unittest
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2 import sys
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3
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4 import random
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5 import math
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6
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7 from test import test_int, test_support
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8
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9 # Used for lazy formatting of failure messages
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10 class Frm(object):
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11 def __init__(self, format, *args):
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12 self.format = format
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13 self.args = args
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14
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15 def __str__(self):
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16 return self.format % self.args
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17
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18 # SHIFT should match the value in longintrepr.h for best testing.
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19 SHIFT = sys.long_info.bits_per_digit
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20 BASE = 2 ** SHIFT
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21 MASK = BASE - 1
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22 KARATSUBA_CUTOFF = 70 # from longobject.c
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23
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24 # Max number of base BASE digits to use in test cases. Doubling
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25 # this will more than double the runtime.
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26 MAXDIGITS = 15
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27
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28 # build some special values
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29 special = map(long, [0, 1, 2, BASE, BASE >> 1])
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30 special.append(0x5555555555555555L)
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31 special.append(0xaaaaaaaaaaaaaaaaL)
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32 # some solid strings of one bits
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33 p2 = 4L # 0 and 1 already added
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34 for i in range(2*SHIFT):
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35 special.append(p2 - 1)
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36 p2 = p2 << 1
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37 del p2
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38 # add complements & negations
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39 special = special + map(lambda x: ~x, special) + \
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40 map(lambda x: -x, special)
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41
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42 L = [
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43 ('0', 0),
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44 ('1', 1),
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45 ('9', 9),
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46 ('10', 10),
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47 ('99', 99),
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48 ('100', 100),
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49 ('314', 314),
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50 (' 314', 314),
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51 ('314 ', 314),
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52 (' \t\t 314 \t\t ', 314),
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53 (repr(sys.maxint), sys.maxint),
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54 (' 1x', ValueError),
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55 (' 1 ', 1),
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56 (' 1\02 ', ValueError),
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57 ('', ValueError),
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58 (' ', ValueError),
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59 (' \t\t ', ValueError)
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60 ]
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61 if test_support.have_unicode:
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62 L += [
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63 (unicode('0'), 0),
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64 (unicode('1'), 1),
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65 (unicode('9'), 9),
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66 (unicode('10'), 10),
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67 (unicode('99'), 99),
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68 (unicode('100'), 100),
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69 (unicode('314'), 314),
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70 (unicode(' 314'), 314),
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71 (unicode('\u0663\u0661\u0664 ','raw-unicode-escape'), 314),
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72 (unicode(' \t\t 314 \t\t '), 314),
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73 (unicode(' 1x'), ValueError),
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74 (unicode(' 1 '), 1),
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75 (unicode(' 1\02 '), ValueError),
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76 (unicode(''), ValueError),
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77 (unicode(' '), ValueError),
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78 (unicode(' \t\t '), ValueError),
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79 (unichr(0x200), ValueError),
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80 ]
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81
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82 class LongTest(test_int.IntLongCommonTests, unittest.TestCase):
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83
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84 ntype = long
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85
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86 # Get quasi-random long consisting of ndigits digits (in base BASE).
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87 # quasi == the most-significant digit will not be 0, and the number
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88 # is constructed to contain long strings of 0 and 1 bits. These are
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89 # more likely than random bits to provoke digit-boundary errors.
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90 # The sign of the number is also random.
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91
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92 def getran(self, ndigits):
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93 self.assertTrue(ndigits > 0)
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94 nbits_hi = ndigits * SHIFT
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95 nbits_lo = nbits_hi - SHIFT + 1
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96 answer = 0L
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97 nbits = 0
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98 r = int(random.random() * (SHIFT * 2)) | 1 # force 1 bits to start
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99 while nbits < nbits_lo:
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100 bits = (r >> 1) + 1
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101 bits = min(bits, nbits_hi - nbits)
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102 self.assertTrue(1 <= bits <= SHIFT)
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103 nbits = nbits + bits
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104 answer = answer << bits
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105 if r & 1:
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106 answer = answer | ((1 << bits) - 1)
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107 r = int(random.random() * (SHIFT * 2))
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108 self.assertTrue(nbits_lo <= nbits <= nbits_hi)
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109 if random.random() < 0.5:
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110 answer = -answer
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111 return answer
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112
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113 # Get random long consisting of ndigits random digits (relative to base
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114 # BASE). The sign bit is also random.
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115
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116 def getran2(ndigits):
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117 answer = 0L
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118 for i in xrange(ndigits):
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119 answer = (answer << SHIFT) | random.randint(0, MASK)
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120 if random.random() < 0.5:
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121 answer = -answer
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122 return answer
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123
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124 def check_division(self, x, y):
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125 eq = self.assertEqual
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126 q, r = divmod(x, y)
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127 q2, r2 = x//y, x%y
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128 pab, pba = x*y, y*x
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129 eq(pab, pba, Frm("multiplication does not commute for %r and %r", x, y))
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130 eq(q, q2, Frm("divmod returns different quotient than / for %r and %r", x, y))
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131 eq(r, r2, Frm("divmod returns different mod than %% for %r and %r", x, y))
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132 eq(x, q*y + r, Frm("x != q*y + r after divmod on x=%r, y=%r", x, y))
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133 if y > 0:
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134 self.assertTrue(0 <= r < y, Frm("bad mod from divmod on %r and %r", x, y))
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135 else:
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6768b2350c57 convert usage of fail* to assert*
Benjamin Peterson <benjamin@python.org>
parents: 53293
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136 self.assertTrue(y < r <= 0, Frm("bad mod from divmod on %r and %r", x, y))
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137
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138 def test_division(self):
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diff changeset
139 digits = range(1, MAXDIGITS+1) + range(KARATSUBA_CUTOFF,
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140 KARATSUBA_CUTOFF + 14)
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diff changeset
141 digits.append(KARATSUBA_CUTOFF * 3)
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142 for lenx in digits:
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Walter Dörwald <walter@livinglogic.de>
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143 x = self.getran(lenx)
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diff changeset
144 for leny in digits:
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Walter Dörwald <walter@livinglogic.de>
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145 y = self.getran(leny) or 1L
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146 self.check_division(x, y)
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147
52233
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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148 # specific numbers chosen to exercise corner cases of the
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149 # current long division implementation
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
150
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
151 # 30-bit cases involving a quotient digit estimate of BASE+1
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152 self.check_division(1231948412290879395966702881L,
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Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
153 1147341367131428698L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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parents: 50205
diff changeset
154 self.check_division(815427756481275430342312021515587883L,
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
155 707270836069027745L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
156 self.check_division(627976073697012820849443363563599041L,
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
157 643588798496057020L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
158 self.check_division(1115141373653752303710932756325578065L,
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
159 1038556335171453937726882627L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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parents: 50205
diff changeset
160 # 30-bit cases that require the post-subtraction correction step
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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161 self.check_division(922498905405436751940989320930368494L,
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
162 949985870686786135626943396L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
163 self.check_division(768235853328091167204009652174031844L,
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
diff changeset
164 1091555541180371554426545266L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
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165
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
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166 # 15-bit cases involving a quotient digit estimate of BASE+1
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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167 self.check_division(20172188947443L, 615611397L)
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168 self.check_division(1020908530270155025L, 950795710L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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169 self.check_division(128589565723112408L, 736393718L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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parents: 50205
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170 self.check_division(609919780285761575L, 18613274546784L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
Mark Dickinson <dickinsm@gmail.com>
parents: 50205
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171 # 15-bit cases that require the post-subtraction correction step
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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172 self.check_division(710031681576388032L, 26769404391308L)
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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parents: 50205
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173 self.check_division(1933622614268221L, 30212853348836L)
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parents: 50205
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174
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Mark Dickinson <dickinsm@gmail.com>
parents: 50205
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175
9b358eae532a Issue #4258: Use 30-bit digits for Python longs, on 64-bit platforms.
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176
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177 def test_karatsuba(self):
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178 digits = range(1, 5) + range(KARATSUBA_CUTOFF, KARATSUBA_CUTOFF + 10)
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179 digits.extend([KARATSUBA_CUTOFF * 10, KARATSUBA_CUTOFF * 100])
24794
1c63d3082656 Added a test specifically to tickle Karatsuba; it costs no appreciable
Tim Peters <tim.peters@gmail.com>
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180
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181 bits = [digit * SHIFT for digit in digits]
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182
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183 # Test products of long strings of 1 bits -- (2**x-1)*(2**y-1) ==
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184 # 2**(x+y) - 2**x - 2**y + 1, so the proper result is easy to check.
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185 for abits in bits:
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Walter Dörwald <walter@livinglogic.de>
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diff changeset
186 a = (1L << abits) - 1
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187 for bbits in bits:
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Walter Dörwald <walter@livinglogic.de>
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diff changeset
188 if bbits < abits:
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Walter Dörwald <walter@livinglogic.de>
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189 continue
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190 b = (1L << bbits) - 1
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191 x = a * b
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Walter Dörwald <walter@livinglogic.de>
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192 y = ((1L << (abits + bbits)) -
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diff changeset
193 (1L << abits) -
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194 (1L << bbits) +
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195 1)
5fb2163231d3 Port test_long.py to unittest.
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196 self.assertEqual(x, y,
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197 Frm("bad result for a*b: a=%r, b=%r, x=%r, y=%r", a, b, x, y))
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198
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199 def check_bitop_identities_1(self, x):
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200 eq = self.assertEqual
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diff changeset
201 eq(x & 0, 0, Frm("x & 0 != 0 for x=%r", x))
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202 eq(x | 0, x, Frm("x | 0 != x for x=%r", x))
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203 eq(x ^ 0, x, Frm("x ^ 0 != x for x=%r", x))
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204 eq(x & -1, x, Frm("x & -1 != x for x=%r", x))
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Walter Dörwald <walter@livinglogic.de>
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diff changeset
205 eq(x | -1, -1, Frm("x | -1 != -1 for x=%r", x))
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Walter Dörwald <walter@livinglogic.de>
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diff changeset
206 eq(x ^ -1, ~x, Frm("x ^ -1 != ~x for x=%r", x))
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Walter Dörwald <walter@livinglogic.de>
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diff changeset
207 eq(x, ~~x, Frm("x != ~~x for x=%r", x))
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diff changeset
208 eq(x & x, x, Frm("x & x != x for x=%r", x))
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parents: 33547
diff changeset
209 eq(x | x, x, Frm("x | x != x for x=%r", x))
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diff changeset
210 eq(x ^ x, 0, Frm("x ^ x != 0 for x=%r", x))
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parents: 33547
diff changeset
211 eq(x & ~x, 0, Frm("x & ~x != 0 for x=%r", x))
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Walter Dörwald <walter@livinglogic.de>
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diff changeset
212 eq(x | ~x, -1, Frm("x | ~x != -1 for x=%r", x))
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Walter Dörwald <walter@livinglogic.de>
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diff changeset
213 eq(x ^ ~x, -1, Frm("x ^ ~x != -1 for x=%r", x))
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Walter Dörwald <walter@livinglogic.de>
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diff changeset
214 eq(-x, 1 + ~x, Frm("not -x == 1 + ~x for x=%r", x))
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Walter Dörwald <walter@livinglogic.de>
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diff changeset
215 eq(-x, ~(x-1), Frm("not -x == ~(x-1) forx =%r", x))
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
216 for n in xrange(2*SHIFT):
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
217 p2 = 2L ** n
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
218 eq(x << n >> n, x,
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
219 Frm("x << n >> n != x for x=%r, n=%r", (x, n)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
220 eq(x // p2, x >> n,
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
221 Frm("x // p2 != x >> n for x=%r n=%r p2=%r", (x, n, p2)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
222 eq(x * p2, x << n,
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
223 Frm("x * p2 != x << n for x=%r n=%r p2=%r", (x, n, p2)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
224 eq(x & -p2, x >> n << n,
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
225 Frm("not x & -p2 == x >> n << n for x=%r n=%r p2=%r", (x, n, p2)))
5fb2163231d3 Port test_long.py to unittest.
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parents: 33547
diff changeset
226 eq(x & -p2, x & ~(p2 - 1),
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
227 Frm("not x & -p2 == x & ~(p2 - 1) for x=%r n=%r p2=%r", (x, n, p2)))
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228
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229 def check_bitop_identities_2(self, x, y):
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diff changeset
230 eq = self.assertEqual
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
231 eq(x & y, y & x, Frm("x & y != y & x for x=%r, y=%r", (x, y)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
232 eq(x | y, y | x, Frm("x | y != y | x for x=%r, y=%r", (x, y)))
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
233 eq(x ^ y, y ^ x, Frm("x ^ y != y ^ x for x=%r, y=%r", (x, y)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
234 eq(x ^ y ^ x, y, Frm("x ^ y ^ x != y for x=%r, y=%r", (x, y)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
235 eq(x & y, ~(~x | ~y), Frm("x & y != ~(~x | ~y) for x=%r, y=%r", (x, y)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
236 eq(x | y, ~(~x & ~y), Frm("x | y != ~(~x & ~y) for x=%r, y=%r", (x, y)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
237 eq(x ^ y, (x | y) & ~(x & y),
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
238 Frm("x ^ y != (x | y) & ~(x & y) for x=%r, y=%r", (x, y)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
239 eq(x ^ y, (x & ~y) | (~x & y),
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
240 Frm("x ^ y == (x & ~y) | (~x & y) for x=%r, y=%r", (x, y)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
241 eq(x ^ y, (x | y) & (~x | ~y),
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
242 Frm("x ^ y == (x | y) & (~x | ~y) for x=%r, y=%r", (x, y)))
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parents:
diff changeset
243
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diff changeset
244 def check_bitop_identities_3(self, x, y, z):
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
245 eq = self.assertEqual
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Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
246 eq((x & y) & z, x & (y & z),
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
247 Frm("(x & y) & z != x & (y & z) for x=%r, y=%r, z=%r", (x, y, z)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
248 eq((x | y) | z, x | (y | z),
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
249 Frm("(x | y) | z != x | (y | z) for x=%r, y=%r, z=%r", (x, y, z)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
250 eq((x ^ y) ^ z, x ^ (y ^ z),
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
251 Frm("(x ^ y) ^ z != x ^ (y ^ z) for x=%r, y=%r, z=%r", (x, y, z)))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
252 eq(x & (y | z), (x & y) | (x & z),
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253 Frm("x & (y | z) != (x & y) | (x & z) for x=%r, y=%r, z=%r", (x, y, z)))
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254 eq(x | (y & z), (x | y) & (x | z),
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255 Frm("x | (y & z) != (x | y) & (x | z) for x=%r, y=%r, z=%r", (x, y, z)))
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256
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257 def test_bitop_identities(self):
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258 for x in special:
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259 self.check_bitop_identities_1(x)
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260 digits = xrange(1, MAXDIGITS+1)
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261 for lenx in digits:
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262 x = self.getran(lenx)
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263 self.check_bitop_identities_1(x)
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264 for leny in digits:
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265 y = self.getran(leny)
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266 self.check_bitop_identities_2(x, y)
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267 self.check_bitop_identities_3(x, y, self.getran((lenx + leny)//2))
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268
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269 def slow_format(self, x, base):
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270 if (x, base) == (0, 8):
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271 # this is an oddball!
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272 return "0L"
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273 digits = []
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274 sign = 0
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275 if x < 0:
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276 sign, x = 1, -x
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277 while x:
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278 x, r = divmod(x, base)
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279 digits.append(int(r))
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280 digits.reverse()
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281 digits = digits or [0]
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282 return '-'[:sign] + \
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283 {8: '0', 10: '', 16: '0x'}[base] + \
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27a718221e72 SF bug #1224347: int/long unification and hex()
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284 "".join(map(lambda i: "0123456789abcdef"[i], digits)) + "L"
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285
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286 def check_format_1(self, x):
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287 for base, mapper in (8, oct), (10, repr), (16, hex):
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288 got = mapper(x)
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289 expected = self.slow_format(x, base)
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290 msg = Frm("%s returned %r but expected %r for %r",
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291 mapper.__name__, got, expected, x)
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292 self.assertEqual(got, expected, msg)
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293 self.assertEqual(long(got, 0), x, Frm('long("%s", 0) != %r', got, x))
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294 # str() has to be checked a little differently since there's no
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295 # trailing "L"
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296 got = str(x)
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297 expected = self.slow_format(x, 10)[:-1]
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298 msg = Frm("%s returned %r but expected %r for %r",
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299 mapper.__name__, got, expected, x)
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300 self.assertEqual(got, expected, msg)
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301
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302 def test_format(self):
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303 for x in special:
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304 self.check_format_1(x)
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305 for i in xrange(10):
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306 for lenx in xrange(1, MAXDIGITS+1):
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307 x = self.getran(lenx)
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308 self.check_format_1(x)
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309
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310 def test_long(self):
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311 self.assertEqual(long(314), 314L)
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312 self.assertEqual(long(3.14), 3L)
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313 self.assertEqual(long(314L), 314L)
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314 # Check that long() of basic types actually returns a long
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315 self.assertEqual(type(long(314)), long)
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316 self.assertEqual(type(long(3.14)), long)
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317 self.assertEqual(type(long(314L)), long)
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318 # Check that conversion from float truncates towards zero
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319 self.assertEqual(long(-3.14), -3L)
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320 self.assertEqual(long(3.9), 3L)
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321 self.assertEqual(long(-3.9), -3L)
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322 self.assertEqual(long(3.5), 3L)
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323 self.assertEqual(long(-3.5), -3L)
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324 self.assertEqual(long("-3"), -3L)
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325 self.assertEqual(long("0b10", 2), 2L)
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326 self.assertEqual(long("0o10", 8), 8L)
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327 self.assertEqual(long("0x10", 16), 16L)
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328 if test_support.have_unicode:
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329 self.assertEqual(long(unicode("-3")), -3L)
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330 # Different base:
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331 self.assertEqual(long("10",16), 16L)
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332 if test_support.have_unicode:
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333 self.assertEqual(long(unicode("10"),16), 16L)
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334 # Check conversions from string (same test set as for int(), and then some)
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335 LL = [
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336 ('1' + '0'*20, 10L**20),
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337 ('1' + '0'*100, 10L**100)
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338 ]
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339 L2 = L[:]
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340 if test_support.have_unicode:
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341 L2 += [
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342 (unicode('1') + unicode('0')*20, 10L**20),
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343 (unicode('1') + unicode('0')*100, 10L**100),
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344 ]
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345 for s, v in L2 + LL:
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346 for sign in "", "+", "-":
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347 for prefix in "", " ", "\t", " \t\t ":
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348 ss = prefix + sign + s
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349 vv = v
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350 if sign == "-" and v is not ValueError:
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351 vv = -v
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352 try:
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353 self.assertEqual(long(ss), long(vv))
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354 except v:
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355 pass
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356
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357 self.assertRaises(ValueError, long, '123\0')
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358 self.assertRaises(ValueError, long, '53', 40)
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359 self.assertRaises(TypeError, long, 1, 12)
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360
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361 # tests with base 0
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362 self.assertEqual(long(' 0123 ', 0), 83)
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363 self.assertEqual(long(' 0123 ', 0), 83)
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364 self.assertEqual(long('000', 0), 0)
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365 self.assertEqual(long('0o123', 0), 83)
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366 self.assertEqual(long('0x123', 0), 291)
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367 self.assertEqual(long('0b100', 0), 4)
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368 self.assertEqual(long(' 0O123 ', 0), 83)
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369 self.assertEqual(long(' 0X123 ', 0), 291)
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370 self.assertEqual(long(' 0B100 ', 0), 4)
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371 self.assertEqual(long('0', 0), 0)
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372 self.assertEqual(long('+0', 0), 0)
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373 self.assertEqual(long('-0', 0), 0)
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374 self.assertEqual(long('00', 0), 0)
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375 self.assertRaises(ValueError, long, '08', 0)
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376 self.assertRaises(ValueError, long, '-012395', 0)
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377
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378 # SF patch #1638879: embedded NULs were not detected with
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379 # explicit base
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380 self.assertRaises(ValueError, long, '123\0', 10)
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381 self.assertRaises(ValueError, long, '123\x00 245', 20)
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382
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diff changeset
383 self.assertEqual(long('100000000000000000000000000000000', 2),
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
384 4294967296)
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diff changeset
385 self.assertEqual(long('102002022201221111211', 3), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
386 self.assertEqual(long('10000000000000000', 4), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
387 self.assertEqual(long('32244002423141', 5), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
388 self.assertEqual(long('1550104015504', 6), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
389 self.assertEqual(long('211301422354', 7), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
390 self.assertEqual(long('40000000000', 8), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
391 self.assertEqual(long('12068657454', 9), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
392 self.assertEqual(long('4294967296', 10), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
393 self.assertEqual(long('1904440554', 11), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
394 self.assertEqual(long('9ba461594', 12), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
395 self.assertEqual(long('535a79889', 13), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
396 self.assertEqual(long('2ca5b7464', 14), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
397 self.assertEqual(long('1a20dcd81', 15), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
398 self.assertEqual(long('100000000', 16), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
399 self.assertEqual(long('a7ffda91', 17), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
400 self.assertEqual(long('704he7g4', 18), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
401 self.assertEqual(long('4f5aff66', 19), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
402 self.assertEqual(long('3723ai4g', 20), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
403 self.assertEqual(long('281d55i4', 21), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
404 self.assertEqual(long('1fj8b184', 22), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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parents: 44488
diff changeset
405 self.assertEqual(long('1606k7ic', 23), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
406 self.assertEqual(long('mb994ag', 24), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
407 self.assertEqual(long('hek2mgl', 25), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
408 self.assertEqual(long('dnchbnm', 26), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
409 self.assertEqual(long('b28jpdm', 27), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
410 self.assertEqual(long('8pfgih4', 28), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
411 self.assertEqual(long('76beigg', 29), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
412 self.assertEqual(long('5qmcpqg', 30), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
413 self.assertEqual(long('4q0jto4', 31), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
414 self.assertEqual(long('4000000', 32), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
415 self.assertEqual(long('3aokq94', 33), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
416 self.assertEqual(long('2qhxjli', 34), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
417 self.assertEqual(long('2br45qb', 35), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
418 self.assertEqual(long('1z141z4', 36), 4294967296)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
419
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
420 self.assertEqual(long('100000000000000000000000000000001', 2),
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
421 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
422 self.assertEqual(long('102002022201221111212', 3), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
423 self.assertEqual(long('10000000000000001', 4), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
424 self.assertEqual(long('32244002423142', 5), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
425 self.assertEqual(long('1550104015505', 6), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
426 self.assertEqual(long('211301422355', 7), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
427 self.assertEqual(long('40000000001', 8), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
428 self.assertEqual(long('12068657455', 9), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
429 self.assertEqual(long('4294967297', 10), 4294967297)
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diff changeset
430 self.assertEqual(long('1904440555', 11), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
431 self.assertEqual(long('9ba461595', 12), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
432 self.assertEqual(long('535a7988a', 13), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
433 self.assertEqual(long('2ca5b7465', 14), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
434 self.assertEqual(long('1a20dcd82', 15), 4294967297)
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diff changeset
435 self.assertEqual(long('100000001', 16), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
436 self.assertEqual(long('a7ffda92', 17), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
437 self.assertEqual(long('704he7g5', 18), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
438 self.assertEqual(long('4f5aff67', 19), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
439 self.assertEqual(long('3723ai4h', 20), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
440 self.assertEqual(long('281d55i5', 21), 4294967297)
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diff changeset
441 self.assertEqual(long('1fj8b185', 22), 4294967297)
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diff changeset
442 self.assertEqual(long('1606k7id', 23), 4294967297)
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diff changeset
443 self.assertEqual(long('mb994ah', 24), 4294967297)
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diff changeset
444 self.assertEqual(long('hek2mgm', 25), 4294967297)
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diff changeset
445 self.assertEqual(long('dnchbnn', 26), 4294967297)
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diff changeset
446 self.assertEqual(long('b28jpdn', 27), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
447 self.assertEqual(long('8pfgih5', 28), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
448 self.assertEqual(long('76beigh', 29), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
449 self.assertEqual(long('5qmcpqh', 30), 4294967297)
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diff changeset
450 self.assertEqual(long('4q0jto5', 31), 4294967297)
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diff changeset
451 self.assertEqual(long('4000001', 32), 4294967297)
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diff changeset
452 self.assertEqual(long('3aokq95', 33), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
453 self.assertEqual(long('2qhxjlj', 34), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
454 self.assertEqual(long('2br45qc', 35), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
455 self.assertEqual(long('1z141z5', 36), 4294967297)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
456
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
457
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
458 def test_conversion(self):
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diff changeset
459 # Test __long__()
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460 class ClassicMissingMethods:
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diff changeset
461 pass
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diff changeset
462 self.assertRaises(AttributeError, long, ClassicMissingMethods())
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diff changeset
463
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diff changeset
464 class MissingMethods(object):
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diff changeset
465 pass
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diff changeset
466 self.assertRaises(TypeError, long, MissingMethods())
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diff changeset
467
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
468 class Foo0:
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diff changeset
469 def __long__(self):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
470 return 42L
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diff changeset
471
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
472 class Foo1(object):
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diff changeset
473 def __long__(self):
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diff changeset
474 return 42L
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diff changeset
475
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
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diff changeset
476 class Foo2(long):
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diff changeset
477 def __long__(self):
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diff changeset
478 return 42L
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diff changeset
479
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diff changeset
480 class Foo3(long):
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diff changeset
481 def __long__(self):
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diff changeset
482 return self
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diff changeset
483
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diff changeset
484 class Foo4(long):
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diff changeset
485 def __long__(self):
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diff changeset
486 return 42
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diff changeset
487
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diff changeset
488 class Foo5(long):
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diff changeset
489 def __long__(self):
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diff changeset
490 return 42.
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diff changeset
491
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diff changeset
492 self.assertEqual(long(Foo0()), 42L)
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diff changeset
493 self.assertEqual(long(Foo1()), 42L)
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diff changeset
494 self.assertEqual(long(Foo2()), 42L)
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diff changeset
495 self.assertEqual(long(Foo3()), 0)
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diff changeset
496 self.assertEqual(long(Foo4()), 42)
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diff changeset
497 self.assertRaises(TypeError, long, Foo5())
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diff changeset
498
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diff changeset
499 class Classic:
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500 pass
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501 for base in (object, Classic):
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diff changeset
502 class LongOverridesTrunc(base):
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diff changeset
503 def __long__(self):
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diff changeset
504 return 42
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diff changeset
505 def __trunc__(self):
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diff changeset
506 return -12
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parents: 44488
diff changeset
507 self.assertEqual(long(LongOverridesTrunc()), 42)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
508
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
509 class JustTrunc(base):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
510 def __trunc__(self):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
511 return 42
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
512 self.assertEqual(long(JustTrunc()), 42)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
513
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
514 for trunc_result_base in (object, Classic):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
515 class Integral(trunc_result_base):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
516 def __int__(self):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
517 return 42
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
518
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
519 class TruncReturnsNonLong(base):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
520 def __trunc__(self):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
521 return Integral()
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
522 self.assertEqual(long(TruncReturnsNonLong()), 42)
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
523
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
524 class NonIntegral(trunc_result_base):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
525 def __trunc__(self):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
526 # Check that we avoid infinite recursion.
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
527 return NonIntegral()
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
528
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
529 class TruncReturnsNonIntegral(base):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
530 def __trunc__(self):
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
531 return NonIntegral()
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
532 try:
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
533 long(TruncReturnsNonIntegral())
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
534 except TypeError as e:
66348
614c84670c63 Merged revisions 86596 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 64946
diff changeset
535 self.assertEqual(str(e),
614c84670c63 Merged revisions 86596 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 64946
diff changeset
536 "__trunc__ returned non-Integral"
614c84670c63 Merged revisions 86596 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 64946
diff changeset
537 " (type NonIntegral)")
46649
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
538 else:
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
539 self.fail("Failed to raise TypeError with %s" %
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
540 ((base, trunc_result_base),))
83cc09682081 Moved testing of builtin types out of test_builtin and into type specific modules
Benjamin Peterson <benjamin@python.org>
parents: 44488
diff changeset
541
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
542 def test_misc(self):
9209
d3af310f230c New test_long.py from Tim Peters.
Guido van Rossum <guido@python.org>
parents: 8989
diff changeset
543
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
544 # check the extremes in int<->long conversion
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
545 hugepos = sys.maxint
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
546 hugeneg = -hugepos - 1
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
547 hugepos_aslong = long(hugepos)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
548 hugeneg_aslong = long(hugeneg)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
549 self.assertEqual(hugepos, hugepos_aslong, "long(sys.maxint) != sys.maxint")
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
550 self.assertEqual(hugeneg, hugeneg_aslong,
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
551 "long(-sys.maxint-1) != -sys.maxint-1")
9209
d3af310f230c New test_long.py from Tim Peters.
Guido van Rossum <guido@python.org>
parents: 8989
diff changeset
552
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
553 # long -> int should not fail for hugepos_aslong or hugeneg_aslong
39995
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
554 x = int(hugepos_aslong)
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
555 try:
39995
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
556 self.assertEqual(x, hugepos,
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
557 "converting sys.maxint to long and back to int fails")
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
558 except OverflowError:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
559 self.fail("int(long(sys.maxint)) overflowed!")
39995
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
560 if not isinstance(x, int):
58795
ca67c37cd26d Merged revisions 78035,78040,78043,78049-78050,78052-78054 via svnmerge from
Georg Brandl <georg@python.org>
parents: 49104
diff changeset
561 self.fail("int(long(sys.maxint)) should have returned int")
39995
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
562 x = int(hugeneg_aslong)
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
563 try:
39995
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
564 self.assertEqual(x, hugeneg,
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
565 "converting -sys.maxint-1 to long and back to int fails")
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
566 except OverflowError:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
567 self.fail("int(long(-sys.maxint-1)) overflowed!")
39995
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
568 if not isinstance(x, int):
58795
ca67c37cd26d Merged revisions 78035,78040,78043,78049-78050,78052-78054 via svnmerge from
Georg Brandl <georg@python.org>
parents: 49104
diff changeset
569 self.fail("int(long(-sys.maxint-1)) should have returned int")
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
570 # but long -> int should overflow for hugepos+1 and hugeneg-1
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
571 x = hugepos_aslong + 1
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
572 try:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
573 y = int(x)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
574 except OverflowError:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
575 self.fail("int(long(sys.maxint) + 1) mustn't overflow")
58472
6ffcdafa0118 use assert[Not]IsInstance where appropriate
Ezio Melotti <ezio.melotti@gmail.com>
parents: 58198
diff changeset
576 self.assertIsInstance(y, long,
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
577 "int(long(sys.maxint) + 1) should have returned long")
9209
d3af310f230c New test_long.py from Tim Peters.
Guido van Rossum <guido@python.org>
parents: 8989
diff changeset
578
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
579 x = hugeneg_aslong - 1
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
580 try:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
581 y = int(x)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
582 except OverflowError:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
583 self.fail("int(long(-sys.maxint-1) - 1) mustn't overflow")
58472
6ffcdafa0118 use assert[Not]IsInstance where appropriate
Ezio Melotti <ezio.melotti@gmail.com>
parents: 58198
diff changeset
584 self.assertIsInstance(y, long,
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
585 "int(long(-sys.maxint-1) - 1) should have returned long")
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
586
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
587 class long2(long):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
588 pass
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
589 x = long2(1L<<100)
26291
d31ddc66b1b5 Change int() so that passing a string, unicode, float or long argument
Walter Dörwald <walter@livinglogic.de>
parents: 24794
diff changeset
590 y = int(x)
55002
6768b2350c57 convert usage of fail* to assert*
Benjamin Peterson <benjamin@python.org>
parents: 53293
diff changeset
591 self.assertTrue(type(y) is long,
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
592 "overflowing int conversion must return long not long subtype")
26291
d31ddc66b1b5 Change int() so that passing a string, unicode, float or long argument
Walter Dörwald <walter@livinglogic.de>
parents: 24794
diff changeset
593
39995
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
594 # long -> Py_ssize_t conversion
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
595 class X(object):
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
596 def __getslice__(self, i, j):
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
597 return i, j
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
598
59783
c8c840162804 #7092 - Silence more py3k deprecation warnings, using test_support.check_py3k_warnings() helper.
Florent Xicluna <florent.xicluna@gmail.com>
parents: 58817
diff changeset
599 with test_support.check_py3k_warnings():
63572
51102abdec50 Merged revisions 79165 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 61935
diff changeset
600 self.assertEqual(X()[-5L:7L], (-5, 7))
51102abdec50 Merged revisions 79165 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 61935
diff changeset
601 # use the clamping effect to test the smallest and largest longs
51102abdec50 Merged revisions 79165 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 61935
diff changeset
602 # that fit a Py_ssize_t
51102abdec50 Merged revisions 79165 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 61935
diff changeset
603 slicemin, slicemax = X()[-2L**100:2L**100]
51102abdec50 Merged revisions 79165 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 61935
diff changeset
604 self.assertEqual(X()[slicemin:slicemax], (slicemin, slicemax))
39995
6ba402b60041 Forward-port of r52136,52138: a review of overflow-detecting code.
Armin Rigo <arigo@tunes.org>
parents: 35177
diff changeset
605
64946
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
606 def test_issue9869(self):
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
607 # Issue 9869: Interpreter crash when initializing an instance
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
608 # of a long subclass from an object whose __long__ method returns
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
609 # a plain int.
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
610 class BadLong(object):
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
611 def __long__(self):
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
612 return 1000000
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
613
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
614 class MyLong(long):
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
615 pass
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
616
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
617 x = MyLong(BadLong())
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
618 self.assertIsInstance(x, long)
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
619 self.assertEqual(x, 1000000)
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
620
6c68dbf932d0 Issue #9869: Make long() and PyNumber_Long return something of type
Mark Dickinson <dickinsm@gmail.com>
parents: 61934
diff changeset
621
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
622 # ----------------------------------- tests of auto int->long conversion
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
623
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
624 def test_auto_overflow(self):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
625 special = [0, 1, 2, 3, sys.maxint-1, sys.maxint, sys.maxint+1]
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
626 sqrt = int(math.sqrt(sys.maxint))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
627 special.extend([sqrt-1, sqrt, sqrt+1])
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
628 special.extend([-i for i in special])
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
629
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
630 def checkit(*args):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
631 # Heavy use of nested scopes here!
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
632 self.assertEqual(got, expected,
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
633 Frm("for %r expected %r got %r", args, expected, got))
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
634
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
635 for x in special:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
636 longx = long(x)
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
637
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
638 expected = -longx
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
639 got = -x
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
640 checkit('-', x)
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
641
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
642 for y in special:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
643 longy = long(y)
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
644
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
645 expected = longx + longy
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
646 got = x + y
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
647 checkit(x, '+', y)
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
648
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
649 expected = longx - longy
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
650 got = x - y
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
651 checkit(x, '-', y)
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
652
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
653 expected = longx * longy
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
654 got = x * y
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
655 checkit(x, '*', y)
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
656
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
657 if y:
59783
c8c840162804 #7092 - Silence more py3k deprecation warnings, using test_support.check_py3k_warnings() helper.
Florent Xicluna <florent.xicluna@gmail.com>
parents: 58817
diff changeset
658 with test_support.check_py3k_warnings():
63572
51102abdec50 Merged revisions 79165 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 61935
diff changeset
659 expected = longx / longy
51102abdec50 Merged revisions 79165 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 61935
diff changeset
660 got = x / y
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
661 checkit(x, '/', y)
19459
50019cb784e0 Add a test for the new // operator too.
Tim Peters <tim.peters@gmail.com>
parents: 19458
diff changeset
662
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
663 expected = longx // longy
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
664 got = x // y
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
665 checkit(x, '//', y)
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
666
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
667 expected = divmod(longx, longy)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
668 got = divmod(longx, longy)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
669 checkit(x, 'divmod', y)
19458
8f90e1f50c11 SF bug [#454456] int overflow code needs tests.
Tim Peters <tim.peters@gmail.com>
parents: 19452
diff changeset
670
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
671 if abs(y) < 5 and not (x == 0 and y < 0):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
672 expected = longx ** longy
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
673 got = x ** y
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
674 checkit(x, '**', y)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
675
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
676 for z in special:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
677 if z != 0 :
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
678 if y >= 0:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
679 expected = pow(longx, longy, long(z))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
680 got = pow(x, y, z)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
681 checkit('pow', x, y, '%', z)
19666
cf65ebf87560 New restriction on pow(x, y, z): If z is not None, x and y must be of
Tim Peters <tim.peters@gmail.com>
parents: 19459
diff changeset
682 else:
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
683 self.assertRaises(TypeError, pow,longx, longy, long(z))
19674
715244108faa Raise OverflowError when appropriate on long->float conversion. Most of
Tim Peters <tim.peters@gmail.com>
parents: 19666
diff changeset
684
53289
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
685 @unittest.skipUnless(float.__getformat__("double").startswith("IEEE"),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
686 "test requires IEEE 754 doubles")
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
687 def test_float_conversion(self):
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
688 import sys
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
689 DBL_MAX = sys.float_info.max
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
690 DBL_MAX_EXP = sys.float_info.max_exp
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
691 DBL_MANT_DIG = sys.float_info.mant_dig
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
692
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
693 exact_values = [0L, 1L, 2L,
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
694 long(2**53-3),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
695 long(2**53-2),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
696 long(2**53-1),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
697 long(2**53),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
698 long(2**53+2),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
699 long(2**54-4),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
700 long(2**54-2),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
701 long(2**54),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
702 long(2**54+4)]
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
703 for x in exact_values:
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
704 self.assertEqual(long(float(x)), x)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
705 self.assertEqual(long(float(-x)), -x)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
706
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
707 # test round-half-even
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
708 for x, y in [(1, 0), (2, 2), (3, 4), (4, 4), (5, 4), (6, 6), (7, 8)]:
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
709 for p in xrange(15):
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
710 self.assertEqual(long(float(2L**p*(2**53+x))), 2L**p*(2**53+y))
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
711
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
712 for x, y in [(0, 0), (1, 0), (2, 0), (3, 4), (4, 4), (5, 4), (6, 8),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
713 (7, 8), (8, 8), (9, 8), (10, 8), (11, 12), (12, 12),
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
714 (13, 12), (14, 16), (15, 16)]:
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
715 for p in xrange(15):
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
716 self.assertEqual(long(float(2L**p*(2**54+x))), 2L**p*(2**54+y))
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
717
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
718 # behaviour near extremes of floating-point range
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
719 long_dbl_max = long(DBL_MAX)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
720 top_power = 2**DBL_MAX_EXP
53293
cee1fc076344 Nit: integer division should use //, not /
Mark Dickinson <dickinsm@gmail.com>
parents: 53289
diff changeset
721 halfway = (long_dbl_max + top_power)//2
53289
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
722 self.assertEqual(float(long_dbl_max), DBL_MAX)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
723 self.assertEqual(float(long_dbl_max+1), DBL_MAX)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
724 self.assertEqual(float(halfway-1), DBL_MAX)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
725 self.assertRaises(OverflowError, float, halfway)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
726 self.assertEqual(float(1-halfway), -DBL_MAX)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
727 self.assertRaises(OverflowError, float, -halfway)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
728 self.assertRaises(OverflowError, float, top_power-1)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
729 self.assertRaises(OverflowError, float, top_power)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
730 self.assertRaises(OverflowError, float, top_power+1)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
731 self.assertRaises(OverflowError, float, 2*top_power-1)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
732 self.assertRaises(OverflowError, float, 2*top_power)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
733 self.assertRaises(OverflowError, float, top_power*top_power)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
734
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
735 for p in xrange(100):
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
736 x = long(2**p * (2**53 + 1) + 1)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
737 y = long(2**p * (2**53+ 2))
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
738 self.assertEqual(long(float(x)), y)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
739
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
740 x = long(2**p * (2**53 + 1))
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
741 y = long(2**p * 2**53)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
742 self.assertEqual(long(float(x)), y)
8f28ce7b8e69 Issue #3166: Make long -> float (and int -> float) conversions
Mark Dickinson <dickinsm@gmail.com>
parents: 52233
diff changeset
743
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
744 def test_float_overflow(self):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
745 for x in -2.0, -1.0, 0.0, 1.0, 2.0:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
746 self.assertEqual(float(long(x)), x)
19674
715244108faa Raise OverflowError when appropriate on long->float conversion. Most of
Tim Peters <tim.peters@gmail.com>
parents: 19666
diff changeset
747
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
748 shuge = '12345' * 120
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
749 huge = 1L << 30000
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
750 mhuge = -huge
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
751 namespace = {'huge': huge, 'mhuge': mhuge, 'shuge': shuge, 'math': math}
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
752 for test in ["float(huge)", "float(mhuge)",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
753 "complex(huge)", "complex(mhuge)",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
754 "complex(huge, 1)", "complex(mhuge, 1)",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
755 "complex(1, huge)", "complex(1, mhuge)",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
756 "1. + huge", "huge + 1.", "1. + mhuge", "mhuge + 1.",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
757 "1. - huge", "huge - 1.", "1. - mhuge", "mhuge - 1.",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
758 "1. * huge", "huge * 1.", "1. * mhuge", "mhuge * 1.",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
759 "1. // huge", "huge // 1.", "1. // mhuge", "mhuge // 1.",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
760 "1. / huge", "huge / 1.", "1. / mhuge", "mhuge / 1.",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
761 "1. ** huge", "huge ** 1.", "1. ** mhuge", "mhuge ** 1.",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
762 "math.sin(huge)", "math.sin(mhuge)",
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
763 "math.sqrt(huge)", "math.sqrt(mhuge)", # should do better
44488
94eeaeeb3ce9 Continue rolling back pep-3141 changes that changed behavior from 2.5. This
Jeffrey Yasskin <jyasskin@gmail.com>
parents: 44448
diff changeset
764 "math.floor(huge)", "math.floor(mhuge)"]:
19679
6958784b1cef Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 19674
diff changeset
765
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
766 self.assertRaises(OverflowError, eval, test, namespace)
19713
9433dd3c197e Return reasonable results for math.log(long) and math.log10(long) (we were
Tim Peters <tim.peters@gmail.com>
parents: 19698
diff changeset
767
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
768 # XXX Perhaps float(shuge) can raise OverflowError on some box?
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
769 # The comparison should not.
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
770 self.assertNotEqual(float(shuge), int(shuge),
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
771 "float(shuge) should not equal int(shuge)")
19713
9433dd3c197e Return reasonable results for math.log(long) and math.log10(long) (we were
Tim Peters <tim.peters@gmail.com>
parents: 19698
diff changeset
772
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
773 def test_logs(self):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
774 LOG10E = math.log10(math.e)
19713
9433dd3c197e Return reasonable results for math.log(long) and math.log10(long) (we were
Tim Peters <tim.peters@gmail.com>
parents: 19698
diff changeset
775
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
776 for exp in range(10) + [100, 1000, 10000]:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
777 value = 10 ** exp
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
778 log10 = math.log10(value)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
779 self.assertAlmostEqual(log10, exp)
19713
9433dd3c197e Return reasonable results for math.log(long) and math.log10(long) (we were
Tim Peters <tim.peters@gmail.com>
parents: 19698
diff changeset
780
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
781 # log10(value) == exp, so log(value) == log10(value)/log10(e) ==
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
782 # exp/LOG10E
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
783 expected = exp / LOG10E
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
784 log = math.log(value)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
785 self.assertAlmostEqual(log, expected)
19713
9433dd3c197e Return reasonable results for math.log(long) and math.log10(long) (we were
Tim Peters <tim.peters@gmail.com>
parents: 19698
diff changeset
786
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
787 for bad in -(1L << 10000), -2L, 0L:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
788 self.assertRaises(ValueError, math.log, bad)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
789 self.assertRaises(ValueError, math.log10, bad)
19713
9433dd3c197e Return reasonable results for math.log(long) and math.log10(long) (we were
Tim Peters <tim.peters@gmail.com>
parents: 19698
diff changeset
790
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
791 def test_mixed_compares(self):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
792 eq = self.assertEqual
33547
702367da2c72 SF bug #513866: Float/long comparison anomaly.
Tim Peters <tim.peters@gmail.com>
parents: 33348
diff changeset
793
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
794 # We're mostly concerned with that mixing floats and longs does the
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
795 # right stuff, even when longs are too large to fit in a float.
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
796 # The safest way to check the results is to use an entirely different
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
797 # method, which we do here via a skeletal rational class (which
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
798 # represents all Python ints, longs and floats exactly).
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
799 class Rat:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
800 def __init__(self, value):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
801 if isinstance(value, (int, long)):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
802 self.n = value
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
803 self.d = 1
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
804 elif isinstance(value, float):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
805 # Convert to exact rational equivalent.
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
806 f, e = math.frexp(abs(value))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
807 assert f == 0 or 0.5 <= f < 1.0
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
808 # |value| = f * 2**e exactly
33547
702367da2c72 SF bug #513866: Float/long comparison anomaly.
Tim Peters <tim.peters@gmail.com>
parents: 33348
diff changeset
809
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
810 # Suck up CHUNK bits at a time; 28 is enough so that we suck
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
811 # up all bits in 2 iterations for all known binary double-
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
812 # precision formats, and small enough to fit in an int.
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
813 CHUNK = 28
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
814 top = 0
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
815 # invariant: |value| = (top + f) * 2**e exactly
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
816 while f:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
817 f = math.ldexp(f, CHUNK)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
818 digit = int(f)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
819 assert digit >> CHUNK == 0
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
820 top = (top << CHUNK) | digit
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
821 f -= digit
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
822 assert 0.0 <= f < 1.0
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
823 e -= CHUNK
33547
702367da2c72 SF bug #513866: Float/long comparison anomaly.
Tim Peters <tim.peters@gmail.com>
parents: 33348
diff changeset
824
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
825 # Now |value| = top * 2**e exactly.
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
826 if e >= 0:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
827 n = top << e
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
828 d = 1
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
829 else:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
830 n = top
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
831 d = 1 << -e
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
832 if value < 0:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
833 n = -n
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
834 self.n = n
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
835 self.d = d
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
836 assert float(n) / float(d) == value
33547
702367da2c72 SF bug #513866: Float/long comparison anomaly.
Tim Peters <tim.peters@gmail.com>
parents: 33348
diff changeset
837 else:
58795
ca67c37cd26d Merged revisions 78035,78040,78043,78049-78050,78052-78054 via svnmerge from
Georg Brandl <georg@python.org>
parents: 49104
diff changeset
838 raise TypeError("can't deal with %r" % value)
33547
702367da2c72 SF bug #513866: Float/long comparison anomaly.
Tim Peters <tim.peters@gmail.com>
parents: 33348
diff changeset
839
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
840 def __cmp__(self, other):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
841 if not isinstance(other, Rat):
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
842 other = Rat(other)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
843 return cmp(self.n * other.d, self.d * other.n)
33547
702367da2c72 SF bug #513866: Float/long comparison anomaly.
Tim Peters <tim.peters@gmail.com>
parents: 33348
diff changeset
844
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
845 cases = [0, 0.001, 0.99, 1.0, 1.5, 1e20, 1e200]
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
846 # 2**48 is an important boundary in the internals. 2**53 is an
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
847 # important boundary for IEEE double precision.
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
848 for t in 2.0**48, 2.0**50, 2.0**53:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
849 cases.extend([t - 1.0, t - 0.3, t, t + 0.3, t + 1.0,
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
850 long(t-1), long(t), long(t+1)])
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
851 cases.extend([0, 1, 2, sys.maxint, float(sys.maxint)])
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
852 # 1L<<20000 should exceed all double formats. long(1e200) is to
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
853 # check that we get equality with 1e200 above.
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
854 t = long(1e200)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
855 cases.extend([0L, 1L, 2L, 1L << 20000, t-1, t, t+1])
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
856 cases.extend([-x for x in cases])
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
857 for x in cases:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
858 Rx = Rat(x)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
859 for y in cases:
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
860 Ry = Rat(y)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
861 Rcmp = cmp(Rx, Ry)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
862 xycmp = cmp(x, y)
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
863 eq(Rcmp, xycmp, Frm("%r %r %d %d", x, y, Rcmp, xycmp))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
864 eq(x == y, Rcmp == 0, Frm("%r == %r %d", x, y, Rcmp))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
865 eq(x != y, Rcmp != 0, Frm("%r != %r %d", x, y, Rcmp))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
866 eq(x < y, Rcmp < 0, Frm("%r < %r %d", x, y, Rcmp))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
867 eq(x <= y, Rcmp <= 0, Frm("%r <= %r %d", x, y, Rcmp))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
868 eq(x > y, Rcmp > 0, Frm("%r > %r %d", x, y, Rcmp))
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
869 eq(x >= y, Rcmp >= 0, Frm("%r >= %r %d", x, y, Rcmp))
33547
702367da2c72 SF bug #513866: Float/long comparison anomaly.
Tim Peters <tim.peters@gmail.com>
parents: 33348
diff changeset
870
44448
5e0170d3c4da Bug #1481296: Fixed long(float('nan'))!=0L.
Christian Heimes <christian@cheimes.de>
parents: 44432
diff changeset
871 def test_nan_inf(self):
5e0170d3c4da Bug #1481296: Fixed long(float('nan'))!=0L.
Christian Heimes <christian@cheimes.de>
parents: 44432
diff changeset
872 self.assertRaises(OverflowError, long, float('inf'))
48177
6c6a030567dd Issue #1481296: (again!) Make conversion of a float NaN to an int or
Mark Dickinson <dickinsm@gmail.com>
parents: 46649
diff changeset
873 self.assertRaises(OverflowError, long, float('-inf'))
6c6a030567dd Issue #1481296: (again!) Make conversion of a float NaN to an int or
Mark Dickinson <dickinsm@gmail.com>
parents: 46649
diff changeset
874 self.assertRaises(ValueError, long, float('nan'))
44448
5e0170d3c4da Bug #1481296: Fixed long(float('nan'))!=0L.
Christian Heimes <christian@cheimes.de>
parents: 44432
diff changeset
875
50205
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
876 def test_bit_length(self):
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
877 tiny = 1e-10
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
878 for x in xrange(-65000, 65000):
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
879 x = long(x)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
880 k = x.bit_length()
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
881 # Check equivalence with Python version
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
882 self.assertEqual(k, len(bin(x).lstrip('-0b')))
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
883 # Behaviour as specified in the docs
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
884 if x != 0:
55002
6768b2350c57 convert usage of fail* to assert*
Benjamin Peterson <benjamin@python.org>
parents: 53293
diff changeset
885 self.assertTrue(2**(k-1) <= abs(x) < 2**k)
50205
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
886 else:
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
887 self.assertEqual(k, 0)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
888 # Alternative definition: x.bit_length() == 1 + floor(log_2(x))
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
889 if x != 0:
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
890 # When x is an exact power of 2, numeric errors can
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
891 # cause floor(log(x)/log(2)) to be one too small; for
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
892 # small x this can be fixed by adding a small quantity
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
893 # to the quotient before taking the floor.
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
894 self.assertEqual(k, 1 + math.floor(
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
895 math.log(abs(x))/math.log(2) + tiny))
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
896
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
897 self.assertEqual((0L).bit_length(), 0)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
898 self.assertEqual((1L).bit_length(), 1)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
899 self.assertEqual((-1L).bit_length(), 1)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
900 self.assertEqual((2L).bit_length(), 2)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
901 self.assertEqual((-2L).bit_length(), 2)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
902 for i in [2, 3, 15, 16, 17, 31, 32, 33, 63, 64, 234]:
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
903 a = 2L**i
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
904 self.assertEqual((a-1).bit_length(), i)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
905 self.assertEqual((1-a).bit_length(), i)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
906 self.assertEqual((a).bit_length(), i+1)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
907 self.assertEqual((-a).bit_length(), i+1)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
908 self.assertEqual((a+1).bit_length(), i+1)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
909 self.assertEqual((-a-1).bit_length(), i+1)
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
910
f0db06f49a4e Issue #3439: add bit_length method to int and long.
Mark Dickinson <dickinsm@gmail.com>
parents: 49104
diff changeset
911
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
912 def test_main():
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
913 test_support.run_unittest(LongTest)
8989
5fb3c683e862 Add Tim Peters' test for long ints
Guido van Rossum <guido@python.org>
parents:
diff changeset
914
35072
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
915 if __name__ == "__main__":
5fb2163231d3 Port test_long.py to unittest.
Walter Dörwald <walter@livinglogic.de>
parents: 33547
diff changeset
916 test_main()