Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_sys.py @ 27998:e27f58a50737 legacy-trunk

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SF bug #690377: Dud footnote reference in distutils docs
author Raymond Hettinger <python@rcn.com>
date Fri, 21 Feb 2003 02:47:09 +0000
parents 226463445697
children 869695cba2cd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # -*- coding: iso-8859-1 -*-
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2 import unittest, test.test_support
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3 import sys, cStringIO
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4
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5 class SysModuleTest(unittest.TestCase):
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6
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7 def test_original_displayhook(self):
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8 import __builtin__
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9 savestdout = sys.stdout
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10 out = cStringIO.StringIO()
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11 sys.stdout = out
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12
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13 dh = sys.__displayhook__
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14
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15 self.assertRaises(TypeError, dh)
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16 if hasattr(__builtin__, "_"):
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17 del __builtin__._
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18
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19 dh(None)
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20 self.assertEqual(out.getvalue(), "")
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21 self.assert_(not hasattr(__builtin__, "_"))
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22 dh(42)
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23 self.assertEqual(out.getvalue(), "42\n")
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24 self.assertEqual(__builtin__._, 42)
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25
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26 del sys.stdout
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27 self.assertRaises(RuntimeError, dh, 42)
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28
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29 sys.stdout = savestdout
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30
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31 def test_lost_displayhook(self):
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32 olddisplayhook = sys.displayhook
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33 del sys.displayhook
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34 code = compile("42", "<string>", "single")
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35 self.assertRaises(RuntimeError, eval, code)
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36 sys.displayhook = olddisplayhook
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37
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38 def test_custom_displayhook(self):
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39 olddisplayhook = sys.displayhook
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40 def baddisplayhook(obj):
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41 raise ValueError
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42 sys.displayhook = baddisplayhook
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43 code = compile("42", "<string>", "single")
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44 self.assertRaises(ValueError, eval, code)
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45 sys.displayhook = olddisplayhook
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46
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47 def test_original_excepthook(self):
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48 savestderr = sys.stderr
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49 err = cStringIO.StringIO()
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50 sys.stderr = err
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51
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52 eh = sys.__excepthook__
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53
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54 self.assertRaises(TypeError, eh)
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55 try:
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56 raise ValueError(42)
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57 except ValueError, exc:
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58 eh(*sys.exc_info())
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59
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60 sys.stderr = savestderr
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61 self.assert_(err.getvalue().endswith("ValueError: 42\n"))
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62
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63 # FIXME: testing the code for a lost or replaced excepthook in
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64 # Python/pythonrun.c::PyErr_PrintEx() is tricky.
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65
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66 def test_exit(self):
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67 self.assertRaises(TypeError, sys.exit, 42, 42)
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68
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69 # call without argument
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70 try:
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71 sys.exit(0)
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72 except SystemExit, exc:
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73 self.assertEquals(exc.code, 0)
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74 except:
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75 self.fail("wrong exception")
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76 else:
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77 self.fail("no exception")
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78
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79 # call with tuple argument with one entry
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80 # entry will be unpacked
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81 try:
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82 sys.exit(42)
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83 except SystemExit, exc:
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84 self.assertEquals(exc.code, 42)
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85 except:
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86 self.fail("wrong exception")
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87 else:
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88 self.fail("no exception")
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89
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90 # call with integer argument
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91 try:
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92 sys.exit((42,))
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93 except SystemExit, exc:
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94 self.assertEquals(exc.code, 42)
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95 except:
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96 self.fail("wrong exception")
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97 else:
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98 self.fail("no exception")
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99
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100 # call with string argument
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101 try:
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102 sys.exit("exit")
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103 except SystemExit, exc:
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104 self.assertEquals(exc.code, "exit")
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105 except:
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106 self.fail("wrong exception")
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107 else:
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108 self.fail("no exception")
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109
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110 # call with tuple argument with two entries
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111 try:
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112 sys.exit((17, 23))
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113 except SystemExit, exc:
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114 self.assertEquals(exc.code, (17, 23))
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115 except:
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116 self.fail("wrong exception")
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117 else:
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118 self.fail("no exception")
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119
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120 def test_getdefaultencoding(self):
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121 if test.test_support.have_unicode:
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122 self.assertRaises(TypeError, sys.getdefaultencoding, 42)
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123 # can't check more than the type, as the user might have changed it
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124 self.assert_(isinstance(sys.getdefaultencoding(), str))
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125
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126 # testing sys.settrace() is done in test_trace.py
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127 # testing sys.setprofile() is done in test_profile.py
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128
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129 def test_setcheckinterval(self):
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130 self.assertRaises(TypeError, sys.setcheckinterval)
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131 sys.setcheckinterval(120)
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132 sys.setcheckinterval(100)
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133
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134 def test_recursionlimit(self):
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135 self.assertRaises(TypeError, sys.getrecursionlimit, 42)
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136 oldlimit = sys.getrecursionlimit()
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137 self.assertRaises(TypeError, sys.setrecursionlimit)
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138 self.assertRaises(ValueError, sys.setrecursionlimit, -42)
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139 sys.setrecursionlimit(10000)
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140 self.assertEqual(sys.getrecursionlimit(), 10000)
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141 sys.setrecursionlimit(oldlimit)
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142
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143 def test_getwindowsversion(self):
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144 if hasattr(sys, "getwindowsversion"):
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145 v = sys.getwindowsversion()
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146 self.assert_(isinstance(v, tuple))
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147 self.assertEqual(len(v), 5)
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148 self.assert_(isinstance(v[0], int))
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149 self.assert_(isinstance(v[1], int))
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150 self.assert_(isinstance(v[2], int))
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151 self.assert_(isinstance(v[3], int))
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152 self.assert_(isinstance(v[4], str))
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153
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154 def test_dlopenflags(self):
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155 if hasattr(sys, "setdlopenflags"):
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156 self.assert_(hasattr(sys, "getdlopenflags"))
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157 self.assertRaises(TypeError, sys.getdlopenflags, 42)
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158 oldflags = sys.getdlopenflags()
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159 self.assertRaises(TypeError, sys.setdlopenflags)
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160 sys.setdlopenflags(oldflags+1)
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161 self.assertEqual(sys.getdlopenflags(), oldflags+1)
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162 sys.setdlopenflags(oldflags)
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163
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164 def test_refcount(self):
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165 self.assertRaises(TypeError, sys.getrefcount)
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166 c = sys.getrefcount(None)
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167 n = None
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168 self.assertEqual(sys.getrefcount(None), c+1)
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169 del n
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170 self.assertEqual(sys.getrefcount(None), c)
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171 if hasattr(sys, "gettotalrefcount"):
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172 self.assert_(isinstance(sys.gettotalrefcount(), int))
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173
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174 def test_getframe(self):
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175 self.assertRaises(TypeError, sys._getframe, 42, 42)
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176 self.assertRaises(ValueError, sys._getframe, 2000000000)
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177 self.assert_(
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178 SysModuleTest.test_getframe.im_func.func_code \
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179 is sys._getframe().f_code
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180 )
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181
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182 def test_attributes(self):
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183 self.assert_(isinstance(sys.api_version, int))
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184 self.assert_(isinstance(sys.argv, list))
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185 self.assert_(sys.byteorder in ("little", "big"))
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186 self.assert_(isinstance(sys.builtin_module_names, tuple))
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187 self.assert_(isinstance(sys.copyright, basestring))
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188 self.assert_(isinstance(sys.exec_prefix, basestring))
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189 self.assert_(isinstance(sys.executable, basestring))
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190 self.assert_(isinstance(sys.hexversion, int))
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191 self.assert_(isinstance(sys.maxint, int))
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192 self.assert_(isinstance(sys.maxunicode, int))
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193 self.assert_(isinstance(sys.platform, basestring))
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194 self.assert_(isinstance(sys.prefix, basestring))
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195 self.assert_(isinstance(sys.version, basestring))
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196 vi = sys.version_info
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197 self.assert_(isinstance(vi, tuple))
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198 self.assertEqual(len(vi), 5)
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199 self.assert_(isinstance(vi[0], int))
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200 self.assert_(isinstance(vi[1], int))
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201 self.assert_(isinstance(vi[2], int))
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202 self.assert_(vi[3] in ("alpha", "beta", "candidate", "final"))
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203 self.assert_(isinstance(vi[4], int))
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204
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205 def test_main():
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206 suite = unittest.TestSuite()
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207 suite.addTest(unittest.makeSuite(SysModuleTest))
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208 test.test_support.run_suite(suite)
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209
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210 if __name__ == "__main__":
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211 test_main()