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annotate Lib/test/test_pyclbr.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents 2d2079593212
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 '''
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2 Test cases for pyclbr.py
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3 Nick Mathewson
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4 '''
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5 from test.test_support import run_unittest, import_module
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6 import sys
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7 from types import ClassType, FunctionType, MethodType, BuiltinFunctionType
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8 import pyclbr
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9 from unittest import TestCase
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10
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11 StaticMethodType = type(staticmethod(lambda: None))
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12 ClassMethodType = type(classmethod(lambda c: None))
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13
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14 # Silence Py3k warning
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15 import_module('commands', deprecated=True)
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16
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17 # This next line triggers an error on old versions of pyclbr.
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18 from commands import getstatus
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19
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20 # Here we test the python class browser code.
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21 #
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22 # The main function in this suite, 'testModule', compares the output
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23 # of pyclbr with the introspected members of a module. Because pyclbr
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24 # is imperfect (as designed), testModule is called with a set of
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25 # members to ignore.
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26
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27 class PyclbrTest(TestCase):
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28
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29 def assertListEq(self, l1, l2, ignore):
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30 ''' succeed iff {l1} - {ignore} == {l2} - {ignore} '''
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31 missing = (set(l1) ^ set(l2)) - set(ignore)
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32 if missing:
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33 print >>sys.stderr, "l1=%r\nl2=%r\nignore=%r" % (l1, l2, ignore)
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34 self.fail("%r missing" % missing.pop())
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35
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36 def assertHasattr(self, obj, attr, ignore):
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37 ''' succeed iff hasattr(obj,attr) or attr in ignore. '''
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38 if attr in ignore: return
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39 if not hasattr(obj, attr): print "???", attr
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40 self.assertTrue(hasattr(obj, attr),
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41 'expected hasattr(%r, %r)' % (obj, attr))
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43
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44 def assertHaskey(self, obj, key, ignore):
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45 ''' succeed iff key in obj or key in ignore. '''
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46 if key in ignore: return
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47 if key not in obj:
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48 print >>sys.stderr, "***", key
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49 self.assertIn(key, obj)
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50
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51 def assertEqualsOrIgnored(self, a, b, ignore):
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52 ''' succeed iff a == b or a in ignore or b in ignore '''
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53 if a not in ignore and b not in ignore:
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54 self.assertEqual(a, b)
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55
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56 def checkModule(self, moduleName, module=None, ignore=()):
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57 ''' succeed iff pyclbr.readmodule_ex(modulename) corresponds
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58 to the actual module object, module. Any identifiers in
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59 ignore are ignored. If no module is provided, the appropriate
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60 module is loaded with __import__.'''
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61
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62 if module is None:
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63 # Import it.
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64 # ('<silly>' is to work around an API silliness in __import__)
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65 module = __import__(moduleName, globals(), {}, ['<silly>'])
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66
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67 dict = pyclbr.readmodule_ex(moduleName)
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68
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69 def ismethod(oclass, obj, name):
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70 classdict = oclass.__dict__
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71 if isinstance(obj, FunctionType):
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72 if not isinstance(classdict[name], StaticMethodType):
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73 return False
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74 else:
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75 if not isinstance(obj, MethodType):
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76 return False
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77 if obj.im_self is not None:
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78 if (not isinstance(classdict[name], ClassMethodType) or
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79 obj.im_self is not oclass):
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80 return False
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81 else:
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82 if not isinstance(classdict[name], FunctionType):
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83 return False
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84
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85 objname = obj.__name__
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86 if objname.startswith("__") and not objname.endswith("__"):
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87 objname = "_%s%s" % (obj.im_class.__name__, objname)
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88 return objname == name
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89
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90 # Make sure the toplevel functions and classes are the same.
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91 for name, value in dict.items():
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92 if name in ignore:
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93 continue
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94 self.assertHasattr(module, name, ignore)
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95 py_item = getattr(module, name)
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96 if isinstance(value, pyclbr.Function):
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97 self.assertIsInstance(py_item, (FunctionType, BuiltinFunctionType))
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98 if py_item.__module__ != moduleName:
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99 continue # skip functions that came from somewhere else
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100 self.assertEqual(py_item.__module__, value.module)
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101 else:
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102 self.assertIsInstance(py_item, (ClassType, type))
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103 if py_item.__module__ != moduleName:
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104 continue # skip classes that came from somewhere else
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105
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106 real_bases = [base.__name__ for base in py_item.__bases__]
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107 pyclbr_bases = [ getattr(base, 'name', base)
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108 for base in value.super ]
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109
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110 try:
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111 self.assertListEq(real_bases, pyclbr_bases, ignore)
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112 except:
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113 print >>sys.stderr, "class=%s" % py_item
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114 raise
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115
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116 actualMethods = []
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117 for m in py_item.__dict__.keys():
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118 if ismethod(py_item, getattr(py_item, m), m):
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119 actualMethods.append(m)
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120 foundMethods = []
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121 for m in value.methods.keys():
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122 if m[:2] == '__' and m[-2:] != '__':
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123 foundMethods.append('_'+name+m)
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124 else:
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125 foundMethods.append(m)
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126
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127 try:
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128 self.assertListEq(foundMethods, actualMethods, ignore)
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129 self.assertEqual(py_item.__module__, value.module)
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130
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131 self.assertEqualsOrIgnored(py_item.__name__, value.name,
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132 ignore)
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133 # can't check file or lineno
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134 except:
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135 print >>sys.stderr, "class=%s" % py_item
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136 raise
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137
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138 # Now check for missing stuff.
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139 def defined_in(item, module):
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140 if isinstance(item, ClassType):
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141 return item.__module__ == module.__name__
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142 if isinstance(item, FunctionType):
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143 return item.func_globals is module.__dict__
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144 return False
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145 for name in dir(module):
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146 item = getattr(module, name)
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147 if isinstance(item, (ClassType, FunctionType)):
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148 if defined_in(item, module):
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149 self.assertHaskey(dict, name, ignore)
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150
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151 def test_easy(self):
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152 self.checkModule('pyclbr')
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153 self.checkModule('doctest', ignore=("DocTestCase",))
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154 # Silence Py3k warning
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155 rfc822 = import_module('rfc822', deprecated=True)
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156 self.checkModule('rfc822', rfc822)
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157 self.checkModule('difflib')
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158
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159 def test_decorators(self):
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160 # XXX: See comment in pyclbr_input.py for a test that would fail
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161 # if it were not commented out.
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162 #
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163 self.checkModule('test.pyclbr_input')
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164
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165 def test_others(self):
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166 cm = self.checkModule
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167
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168 # These were once about the 10 longest modules
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169 cm('random', ignore=('Random',)) # from _random import Random as CoreGenerator
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170 cm('cgi', ignore=('log',)) # set with = in module
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171 cm('urllib', ignore=('_CFNumberToInt32',
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172 '_CStringFromCFString',
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173 '_CFSetup',
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174 'getproxies_registry',
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175 'proxy_bypass_registry',
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176 'proxy_bypass_macosx_sysconf',
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177 'open_https',
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178 'getproxies_macosx_sysconf',
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179 'getproxies_internetconfig',)) # not on all platforms
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180 cm('pickle')
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181 cm('aifc', ignore=('openfp',)) # set with = in module
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182 cm('Cookie')
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183 cm('sre_parse', ignore=('dump',)) # from sre_constants import *
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184 cm('pdb')
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185 cm('pydoc')
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186
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187 # Tests for modules inside packages
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188 cm('email.parser')
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189 cm('test.test_pyclbr')
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190
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191 def test_issue_14798(self):
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192 # test ImportError is raised when the first part of a dotted name is
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193 # not a package
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194 self.assertRaises(ImportError, pyclbr.readmodule_ex, 'asyncore.foo')
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195
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196
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197 def test_main():
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198 run_unittest(PyclbrTest)
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199
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200
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201 if __name__ == "__main__":
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202 test_main()