annotate MoinMoin/_tests/__init__.py @ 76:df348d27f1fc

fix bogus error handling in _tests and wikitest Import errors in test_modules were hidden by Python unittest framework, and displayed as bogus AttributeError. Fixed by using more robust way to import test modules. Fix also error handling in wikitest, which hide import error inside a test module as bogus "Tests are not available". imported from: moin--main--1.5--patch-78
author Nir Soffer <nirs@freeshell.org>
date Tue, 04 Oct 2005 02:21:07 +0000
parents 77665d8e2254
children 3bf0b6c09275
rev   line source
0
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1 # -*- coding: iso-8859-1 -*-
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2 """
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3 MoinMoin Testing Framework
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4 --------------------------
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5
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6 All test modules must be named test_modulename to be included in the
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7 test suit. If you are testing a package, name the test module
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8 test_pakcage_module.
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9
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10 Each test_ module may contain test case classes sub classed from
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11 unittest.TestCase or subclass of it. Previous versions required TestCase
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12 suffix, but now its only a convention.
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13
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14 Each test case class may contain multiply test methods, that must start
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15 with 'test'. Those methods will be run by the test suites.
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16
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17 Test that need the current request, for example to create a page
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18 instance, can refer to self.request. It is injected into all test case
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19 classes by the framework.
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20
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21 Tests that require certain configuration, like section_numbers = 1, must
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22 use a TestConfig to create the required configuration before the
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23 test. Deleting the TestConfig instance will restore the previous
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24 configuration.
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25
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26 See _test_template.py for an example, and use it to create new tests.
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27
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28 Typical Usage
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29 -------------
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30
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31 Running all test in this package::
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32
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33 from MoinMoin._tests import run
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34 run(request)
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35
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36 Running only few modules::
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37
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38 run(request, names=['test_this', 'test_that'])
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39
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40 @copyright: 2002-2004 by Jürgen Hermann <jh@web.de>
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41 @license: GNU GPL, see COPYING for details.
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42 """
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43
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44 from unittest import TestLoader, TextTestRunner
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45
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46
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47 class TestSkiped(Exception):
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48 """ Raised when a tests is skipped """
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49
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50
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51 class TestConfig:
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52 """ Custom configuration for unit tests
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53
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54 Some test assume specific configuration, and will fail if the wiki admin
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55 will change the configuration. For example, DateTime macro test assume
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56 the default datetime_fmt.
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57
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58 When you set custom values in a TestConfig, the previous values are saved,
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59 and when the TestConfig is deleted, they are restored automatically.
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60
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61 Typical Usage
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62 ------------
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63 ::
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64 from MoinMoin._tests import TestConfig
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65 class SomeTestCase(unittest.TestCase):
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66 def setUp(self):
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67 self.config = TestConfig(self.request,
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68 defaults=key_list, key=value,...)
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69 def tearDown(self):
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70 del self.config
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71 def testSomething(self):
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72 # test that needs those defaults and custom values
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73 """
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74
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75 def __init__(self, request, defaults=(), **custom):
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76 """ Create temporary configuration for a test
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77
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78 @param request: current request
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79 @param defaults: list of keys that should use the default value
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80 @param **custom: other keys using non default values, or new keys
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81 that request.cfg does not have already
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82 """
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83 self.request = request
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84 self.old = {} # Old config values
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85 self.new = [] # New added attributes
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86 self.setDefaults(defaults)
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87 self.setCustom(**custom)
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88
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89 def setDefaults(self, defaults=()):
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90 """ Set default values for keys in defaults list
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91
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92 Non existing default will raise an AttributeError.
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93 """
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94 from MoinMoin.multiconfig import DefaultConfig
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95 for key in defaults:
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96 self._setattr(key, getattr(DefaultConfig, key))
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97
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98 def setCustom(self, **custom):
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99 """ Set custom values """
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100 for key, value in custom.items():
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101 self._setattr(key, value)
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102
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103 def _setattr(self, key, value):
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104 """ Set a new value for key saving new added keys """
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105 if hasattr(self.request.cfg, key):
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106 self.old[key] = getattr(self.request.cfg, key)
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107 else:
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108 self.new.append(key)
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109 setattr(self.request.cfg, key, value)
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110
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111 def __del__(self):
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112 """ Restore previous request.cfg
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113
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114 Set old keys to old values and delete new keys.
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115 """
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116 for key, value in self.old.items():
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117 setattr(self.request.cfg, key, value)
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118 for key in self.new:
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119 delattr(self.request.cfg, key)
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120
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121
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122 class MoinTestLoader(TestLoader):
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123 """ Customized test loader that support long running process
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124
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125 To enable testing long running process, we inject the current
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126 request into each test case class. Later, each test can refer to
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127 request as self.request.
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128 """
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129 def __init__(self, request):
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130 self.request = request
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131
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132 def loadTestsFromTestCase(self, testCaseClass):
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133 testCaseClass.request = self.request
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134 return TestLoader.loadTestsFromTestCase(self, testCaseClass)
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135
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136 def loadTestsFromModuleNames(self, names):
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137 """ Load tests from qualified module names, eg. a.b.c
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138
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139 loadTestsFromNames is broken, hiding ImportErrros in test
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140 modules. This method is less flexsible but works correctly.
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141 """
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142 names = ['%s.%s' % (__name__, name) for name in names]
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143 suites = []
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144 for name in names:
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145 module = __import__(name, globals(), {}, ['dummy'])
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146 suites.append(self.loadTestsFromModule(module))
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147 return self.suiteClass(suites)
0
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148
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149
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150 def makeSuite(request, names=None):
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151 """ Create test suites from modules in names
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152
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153 @param request: current request
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154 @param names: module names to get tests from. If the list is empty,
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155 all test modules in the _tests package are used.
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156 @rtype: C{unittest.TestSuite}
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157 @return: test suite with all test cases in names
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158 """
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159 if not names:
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160 from MoinMoin.util.pysupport import getPackageModules
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161 names = getPackageModules(__file__)
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162 names = [name for name in names if name.startswith('test_')]
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163 caseInsensitiveCompare = lambda a, b: cmp(a.lower(), b.lower())
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164 names.sort(caseInsensitiveCompare)
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165
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166 return MoinTestLoader(request).loadTestsFromModuleNames(names)
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167
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168
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169 def run(request=None, names=None):
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170 """ Run test suit
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171
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172 @param request: current request
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173 @param names: list fully qualified module names to test,
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174 e.g MoinMoin._tests.test_error
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175 """
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176 if request is None:
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177 from MoinMoin.request import RequestCLI
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178 from MoinMoin.user import User
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179 request = RequestCLI()
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180 request.form = request.args = request.setup_args()
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181 request.user = User(request)
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182
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183 suite = makeSuite(request, names)
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184 TextTestRunner(stream=request, verbosity=2).run(suite)