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Diffstat (limited to 'lib/python2.7/unittest/suite.py')
| -rw-r--r-- | lib/python2.7/unittest/suite.py | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/lib/python2.7/unittest/suite.py b/lib/python2.7/unittest/suite.py new file mode 100644 index 0000000..633af5c --- /dev/null +++ b/lib/python2.7/unittest/suite.py @@ -0,0 +1,303 @@ +"""TestSuite""" + +import sys + +from . import case +from . import util + +__unittest = True + + +def _call_if_exists(parent, attr): + func = getattr(parent, attr, lambda: None) + func() + + +class BaseTestSuite(object): + """A simple test suite that doesn't provide class or module shared fixtures. + """ + def __init__(self, tests=()): + self._tests = [] + self.addTests(tests) + + def __repr__(self): + return "<%s tests=%s>" % (util.strclass(self.__class__), list(self)) + + def __eq__(self, other): + if not isinstance(other, self.__class__): + return NotImplemented + return list(self) == list(other) + + def __ne__(self, other): + return not self == other + + # Can't guarantee hash invariant, so flag as unhashable + __hash__ = None + + def __iter__(self): + return iter(self._tests) + + def countTestCases(self): + cases = 0 + for test in self: + cases += test.countTestCases() + return cases + + def addTest(self, test): + # sanity checks + if not hasattr(test, '__call__'): + raise TypeError("{} is not callable".format(repr(test))) + if isinstance(test, type) and issubclass(test, + (case.TestCase, TestSuite)): + raise TypeError("TestCases and TestSuites must be instantiated " + "before passing them to addTest()") + self._tests.append(test) + + def addTests(self, tests): + if isinstance(tests, basestring): + raise TypeError("tests must be an iterable of tests, not a string") + for test in tests: + self.addTest(test) + + def run(self, result): + for test in self: + if result.shouldStop: + break + test(result) + return result + + def __call__(self, *args, **kwds): + return self.run(*args, **kwds) + + def debug(self): + """Run the tests without collecting errors in a TestResult""" + for test in self: + test.debug() + + +class TestSuite(BaseTestSuite): + """A test suite is a composite test consisting of a number of TestCases. + + For use, create an instance of TestSuite, then add test case instances. + When all tests have been added, the suite can be passed to a test + runner, such as TextTestRunner. It will run the individual test cases + in the order in which they were added, aggregating the results. When + subclassing, do not forget to call the base class constructor. + """ + + def run(self, result, debug=False): + topLevel = False + if getattr(result, '_testRunEntered', False) is False: + result._testRunEntered = topLevel = True + + for test in self: + if result.shouldStop: + break + + if _isnotsuite(test): + self._tearDownPreviousClass(test, result) + self._handleModuleFixture(test, result) + self._handleClassSetUp(test, result) + result._previousTestClass = test.__class__ + + if (getattr(test.__class__, '_classSetupFailed', False) or + getattr(result, '_moduleSetUpFailed', False)): + continue + + if not debug: + test(result) + else: + test.debug() + + if topLevel: + self._tearDownPreviousClass(None, result) + self._handleModuleTearDown(result) + result._testRunEntered = False + return result + + def debug(self): + """Run the tests without collecting errors in a TestResult""" + debug = _DebugResult() + self.run(debug, True) + + ################################ + + def _handleClassSetUp(self, test, result): + previousClass = getattr(result, '_previousTestClass', None) + currentClass = test.__class__ + if currentClass == previousClass: + return + if result._moduleSetUpFailed: + return + if getattr(currentClass, "__unittest_skip__", False): + return + + try: + currentClass._classSetupFailed = False + except TypeError: + # test may actually be a function + # so its class will be a builtin-type + pass + + setUpClass = getattr(currentClass, 'setUpClass', None) + if setUpClass is not None: + _call_if_exists(result, '_setupStdout') + try: + setUpClass() + except Exception as e: + if isinstance(result, _DebugResult): + raise + currentClass._classSetupFailed = True + className = util.strclass(currentClass) + errorName = 'setUpClass (%s)' % className + self._addClassOrModuleLevelException(result, e, errorName) + finally: + _call_if_exists(result, '_restoreStdout') + + def _get_previous_module(self, result): + previousModule = None + previousClass = getattr(result, '_previousTestClass', None) + if previousClass is not None: + previousModule = previousClass.__module__ + return previousModule + + + def _handleModuleFixture(self, test, result): + previousModule = self._get_previous_module(result) + currentModule = test.__class__.__module__ + if currentModule == previousModule: + return + + self._handleModuleTearDown(result) + + result._moduleSetUpFailed = False + try: + module = sys.modules[currentModule] + except KeyError: + return + setUpModule = getattr(module, 'setUpModule', None) + if setUpModule is not None: + _call_if_exists(result, '_setupStdout') + try: + setUpModule() + except Exception, e: + if isinstance(result, _DebugResult): + raise + result._moduleSetUpFailed = True + errorName = 'setUpModule (%s)' % currentModule + self._addClassOrModuleLevelException(result, e, errorName) + finally: + _call_if_exists(result, '_restoreStdout') + + def _addClassOrModuleLevelException(self, result, exception, errorName): + error = _ErrorHolder(errorName) + addSkip = getattr(result, 'addSkip', None) + if addSkip is not None and isinstance(exception, case.SkipTest): + addSkip(error, str(exception)) + else: + result.addError(error, sys.exc_info()) + + def _handleModuleTearDown(self, result): + previousModule = self._get_previous_module(result) + if previousModule is None: + return + if result._moduleSetUpFailed: + return + + try: + module = sys.modules[previousModule] + except KeyError: + return + + tearDownModule = getattr(module, 'tearDownModule', None) + if tearDownModule is not None: + _call_if_exists(result, '_setupStdout') + try: + tearDownModule() + except Exception as e: + if isinstance(result, _DebugResult): + raise + errorName = 'tearDownModule (%s)' % previousModule + self._addClassOrModuleLevelException(result, e, errorName) + finally: + _call_if_exists(result, '_restoreStdout') + + def _tearDownPreviousClass(self, test, result): + previousClass = getattr(result, '_previousTestClass', None) + currentClass = test.__class__ + if currentClass == previousClass: + return + if getattr(previousClass, '_classSetupFailed', False): + return + if getattr(result, '_moduleSetUpFailed', False): + return + if getattr(previousClass, "__unittest_skip__", False): + return + + tearDownClass = getattr(previousClass, 'tearDownClass', None) + if tearDownClass is not None: + _call_if_exists(result, '_setupStdout') + try: + tearDownClass() + except Exception, e: + if isinstance(result, _DebugResult): + raise + className = util.strclass(previousClass) + errorName = 'tearDownClass (%s)' % className + self._addClassOrModuleLevelException(result, e, errorName) + finally: + _call_if_exists(result, '_restoreStdout') + + +class _ErrorHolder(object): + """ + Placeholder for a TestCase inside a result. As far as a TestResult + is concerned, this looks exactly like a unit test. Used to insert + arbitrary errors into a test suite run. + """ + # Inspired by the ErrorHolder from Twisted: + # http://twistedmatrix.com/trac/browser/trunk/twisted/trial/runner.py + + # attribute used by TestResult._exc_info_to_string + failureException = None + + def __init__(self, description): + self.description = description + + def id(self): + return self.description + + def shortDescription(self): + return None + + def __repr__(self): + return "<ErrorHolder description=%r>" % (self.description,) + + def __str__(self): + return self.id() + + def run(self, result): + # could call result.addError(...) - but this test-like object + # shouldn't be run anyway + pass + + def __call__(self, result): + return self.run(result) + + def countTestCases(self): + return 0 + +def _isnotsuite(test): + "A crude way to tell apart testcases and suites with duck-typing" + try: + iter(test) + except TypeError: + return True + return False + + +class _DebugResult(object): + "Used by the TestSuite to hold previous class when running in debug." + _previousTestClass = None + _moduleSetUpFailed = False + shouldStop = False |