Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_symtable.py @ 58925:eecf1bef052d 2.6

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Merged revisions 78207 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78207 | ezio.melotti | 2010-02-17 01:26:09 +0200 (Wed, 17 Feb 2010) | 1 line #7930: fix stripid ........
author Ezio Melotti <ezio.melotti@gmail.com>
date Tue, 16 Feb 2010 23:29:44 +0000
parents 6910792fcd4b
children 762d89faceaa
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """
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2 Test the API of the symtable module.
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3 """
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4 import symtable
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5 import unittest
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6 import warnings
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7
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8 from test import test_support
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9
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10
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11 TEST_CODE = """
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12 import sys
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13
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14 glob = 42
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15
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16 class Mine:
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17 instance_var = 24
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18 def a_method(p1, p2):
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19 pass
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20
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21 def spam(a, b, *var, **kw):
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22 global bar
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23 bar = 47
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24 x = 23
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25 glob
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26 def internal():
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27 return x
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28 return internal
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29
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30 def foo():
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31 exec 'm'
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32 from sys import *
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33
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34 def namespace_test(): pass
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35 def namespace_test(): pass
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36 """
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37
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38
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39 def find_block(block, name):
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40 for ch in block.get_children():
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41 if ch.get_name() == name:
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42 return ch
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43
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44
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45 class SymtableTest(unittest.TestCase):
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46
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47 with warnings.catch_warnings():
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48 # Ignore warnings about "from blank import *"
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49 warnings.simplefilter("ignore", SyntaxWarning)
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50 top = symtable.symtable(TEST_CODE, "?", "exec")
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51 # These correspond to scopes in TEST_CODE
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52 Mine = find_block(top, "Mine")
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53 a_method = find_block(Mine, "a_method")
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54 spam = find_block(top, "spam")
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55 internal = find_block(spam, "internal")
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56 foo = find_block(top, "foo")
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57
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58 def test_noops(self):
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59 # Check methods that don't work. They should warn and return False.
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60 def check(w, msg):
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61 self.assertEqual(str(w.message), msg)
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62 sym = self.top.lookup("glob")
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63 with test_support.check_warnings() as w:
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64 warnings.simplefilter("always", DeprecationWarning)
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65 self.assertFalse(sym.is_vararg())
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66 check(w, "is_vararg() is obsolete and will be removed")
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67 w.reset()
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68 self.assertFalse(sym.is_keywordarg())
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69 check(w, "is_keywordarg() is obsolete and will be removed")
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70 w.reset()
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71 self.assertFalse(sym.is_in_tuple())
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72 check(w, "is_in_tuple() is obsolete and will be removed")
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73
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74 def test_type(self):
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75 self.assertEqual(self.top.get_type(), "module")
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76 self.assertEqual(self.Mine.get_type(), "class")
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77 self.assertEqual(self.a_method.get_type(), "function")
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78 self.assertEqual(self.spam.get_type(), "function")
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79 self.assertEqual(self.internal.get_type(), "function")
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80
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81 def test_optimized(self):
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82 self.assertFalse(self.top.is_optimized())
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83 self.assertFalse(self.top.has_exec())
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84 self.assertFalse(self.top.has_import_star())
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85
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86 self.assertTrue(self.spam.is_optimized())
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87
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88 self.assertFalse(self.foo.is_optimized())
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89 self.assertTrue(self.foo.has_exec())
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90 self.assertTrue(self.foo.has_import_star())
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91
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92 def test_nested(self):
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93 self.assertFalse(self.top.is_nested())
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94 self.assertFalse(self.Mine.is_nested())
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95 self.assertFalse(self.spam.is_nested())
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96 self.assertTrue(self.internal.is_nested())
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97
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98 def test_children(self):
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99 self.assertTrue(self.top.has_children())
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100 self.assertTrue(self.Mine.has_children())
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101 self.assertFalse(self.foo.has_children())
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102
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103 def test_lineno(self):
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104 self.assertEqual(self.top.get_lineno(), 0)
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105 self.assertEqual(self.spam.get_lineno(), 11)
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106
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107 def test_function_info(self):
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108 func = self.spam
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109 self.assertEqual(func.get_parameters(), ("a", "b", "kw", "var"))
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110 self.assertEqual(func.get_locals(),
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111 ("a", "b", "bar", "internal", "kw", "var", "x"))
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112 self.assertEqual(func.get_globals(), ("bar", "glob"))
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113 self.assertEqual(self.internal.get_frees(), ("x",))
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114
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115 def test_globals(self):
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116 self.assertTrue(self.spam.lookup("glob").is_global())
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117 self.assertFalse(self.spam.lookup("glob").is_declared_global())
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118 self.assertTrue(self.spam.lookup("bar").is_global())
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119 self.assertTrue(self.spam.lookup("bar").is_declared_global())
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120 self.assertFalse(self.internal.lookup("x").is_global())
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121 self.assertFalse(self.Mine.lookup("instance_var").is_global())
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122
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123 def test_local(self):
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124 self.assertTrue(self.spam.lookup("x").is_local())
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125 self.assertFalse(self.internal.lookup("x").is_local())
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126
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127 def test_referenced(self):
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128 self.assertTrue(self.internal.lookup("x").is_referenced())
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129 self.assertTrue(self.spam.lookup("internal").is_referenced())
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130 self.assertFalse(self.spam.lookup("x").is_referenced())
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131
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132 def test_parameters(self):
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133 for sym in ("a", "var", "kw"):
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134 self.assertTrue(self.spam.lookup(sym).is_parameter())
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135 self.assertFalse(self.spam.lookup("x").is_parameter())
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136
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137 def test_symbol_lookup(self):
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138 self.assertEqual(len(self.top.get_identifiers()),
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139 len(self.top.get_symbols()))
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140
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141 self.assertRaises(KeyError, self.top.lookup, "not_here")
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142
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143 def test_namespaces(self):
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144 self.assertTrue(self.top.lookup("Mine").is_namespace())
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145 self.assertTrue(self.Mine.lookup("a_method").is_namespace())
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146 self.assertTrue(self.top.lookup("spam").is_namespace())
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147 self.assertTrue(self.spam.lookup("internal").is_namespace())
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148 self.assertTrue(self.top.lookup("namespace_test").is_namespace())
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149 self.assertFalse(self.spam.lookup("x").is_namespace())
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150
48269
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151 self.assert_(self.top.lookup("spam").get_namespace() is self.spam)
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152 ns_test = self.top.lookup("namespace_test")
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153 self.assertEqual(len(ns_test.get_namespaces()), 2)
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154 self.assertRaises(ValueError, ns_test.get_namespace)
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155
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156 def test_assigned(self):
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157 self.assertTrue(self.spam.lookup("x").is_assigned())
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158 self.assertTrue(self.spam.lookup("bar").is_assigned())
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159 self.assertTrue(self.top.lookup("spam").is_assigned())
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160 self.assertTrue(self.Mine.lookup("a_method").is_assigned())
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161 self.assertFalse(self.internal.lookup("x").is_assigned())
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162
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163 def test_imported(self):
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164 self.assertTrue(self.top.lookup("sys").is_imported())
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165
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166 def test_name(self):
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167 self.assertEqual(self.top.get_name(), "top")
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168 self.assertEqual(self.spam.get_name(), "spam")
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169 self.assertEqual(self.spam.lookup("x").get_name(), "x")
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170 self.assertEqual(self.Mine.get_name(), "Mine")
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171
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172 def test_class_info(self):
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173 self.assertEqual(self.Mine.get_methods(), ('a_method',))
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174
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175 def test_filename_correct(self):
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176 ### Bug tickler: SyntaxError file name correct whether error raised
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177 ### while parsing or building symbol table.
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178 def checkfilename(brokencode):
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179 try:
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180 symtable.symtable(brokencode, "spam", "exec")
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181 except SyntaxError as e:
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182 self.assertEqual(e.filename, "spam")
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183 else:
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184 self.fail("no SyntaxError for %r" % (brokencode,))
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185 checkfilename("def f(x): foo)(") # parse-time
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186 checkfilename("def f(x): global x") # symtable-build-time
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187
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188 def test_eval(self):
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189 symbols = symtable.symtable("42", "?", "eval")
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190
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191 def test_single(self):
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192 symbols = symtable.symtable("42", "?", "single")
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193
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194 def test_exec(self):
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195 symbols = symtable.symtable("def f(x): return x", "?", "exec")
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196
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197
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198 def test_main():
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199 test_support.run_unittest(SymtableTest)
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200
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201 if __name__ == '__main__':
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202 test_main()