cinap_lenrekadd hg and python4bb9e2215 years agoHistory
816 lines · 28.7 KB · Python
RawDownload
#!/usr/bin/env python'''Python unit testing framework, based on Erich Gamma's JUnit and Kent Beck'sSmalltalk testing framework. This module contains the core framework classes that form the basis ofspecific test cases and suites (TestCase, TestSuite etc.), and also atext-based utility class for running the tests and reporting the results (TextTestRunner). Simple usage:     import unittest     class IntegerArithmenticTestCase(unittest.TestCase):        def testAdd(self):  ## test method names begin 'test*'            self.assertEquals((1 + 2), 3)            self.assertEquals(0 + 1, 1)        def testMultiply(self):            self.assertEquals((0 * 10), 0)            self.assertEquals((5 * 8), 40)     if __name__ == '__main__':        unittest.main() Further information is available in the bundled documentation, and from   http://pyunit.sourceforge.net/ Copyright (c) 1999-2003 Steve PurcellThis module is free software, and you may redistribute it and/or modifyit under the same terms as Python itself, so long as this copyright messageand disclaimer are retained in their original form. IN NO EVENT SHALL THE AUTHOR BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OFTHIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCHDAMAGE. THE AUTHOR SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOTLIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR APARTICULAR PURPOSE.  THE CODE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS,AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.''' __author__ = "Steve Purcell"__email__ = "stephen_purcell at yahoo dot com"__version__ = "#Revision: 1.63 $"[11:-2] import timeimport sysimport tracebackimport osimport types ############################################################################### Exported classes and functions##############################################################################__all__ = ['TestResult', 'TestCase', 'TestSuite', 'TextTestRunner',           'TestLoader', 'FunctionTestCase', 'main', 'defaultTestLoader'] # Expose obsolete functions for backwards compatibility__all__.extend(['getTestCaseNames', 'makeSuite', 'findTestCases'])  ############################################################################### Backward compatibility##############################################################################if sys.version_info[:2] < (2, 2):    False, True = 0, 1    def isinstance(obj, clsinfo):        import __builtin__        if type(clsinfo) in (tuple, list):            for cls in clsinfo:                if cls is type: cls = types.ClassType                if __builtin__.isinstance(obj, cls):                    return 1            return 0        else: return __builtin__.isinstance(obj, clsinfo)  ############################################################################### Test framework core############################################################################## # All classes defined herein are 'new-style' classes, allowing use of 'super()'__metaclass__ = type def _strclass(cls):    return "%s.%s" % (cls.__module__, cls.__name__) __unittest = 1 class TestResult:    """Holder for test result information.     Test results are automatically managed by the TestCase and TestSuite    classes, and do not need to be explicitly manipulated by writers of tests.     Each instance holds the total number of tests run, and collections of    failures and errors that occurred among those test runs. The collections    contain tuples of (testcase, exceptioninfo), where exceptioninfo is the    formatted traceback of the error that occurred.    """    def __init__(self):        self.failures = []        self.errors = []        self.testsRun = 0        self.shouldStop = 0     def startTest(self, test):        "Called when the given test is about to be run"        self.testsRun = self.testsRun + 1     def stopTest(self, test):        "Called when the given test has been run"        pass     def addError(self, test, err):        """Called when an error has occurred. 'err' is a tuple of values as        returned by sys.exc_info().        """        self.errors.append((test, self._exc_info_to_string(err, test)))     def addFailure(self, test, err):        """Called when an error has occurred. 'err' is a tuple of values as        returned by sys.exc_info()."""        self.failures.append((test, self._exc_info_to_string(err, test)))     def addSuccess(self, test):        "Called when a test has completed successfully"        pass     def wasSuccessful(self):        "Tells whether or not this result was a success"        return len(self.failures) == len(self.errors) == 0     def stop(self):        "Indicates that the tests should be aborted"        self.shouldStop = True     def _exc_info_to_string(self, err, test):        """Converts a sys.exc_info()-style tuple of values into a string."""        exctype, value, tb = err        # Skip test runner traceback levels        while tb and self._is_relevant_tb_level(tb):            tb = tb.tb_next        if exctype is test.failureException:            # Skip assert*() traceback levels            length = self._count_relevant_tb_levels(tb)            return ''.join(traceback.format_exception(exctype, value, tb, length))        return ''.join(traceback.format_exception(exctype, value, tb))     def _is_relevant_tb_level(self, tb):        return tb.tb_frame.f_globals.has_key('__unittest')     def _count_relevant_tb_levels(self, tb):        length = 0        while tb and not self._is_relevant_tb_level(tb):            length += 1            tb = tb.tb_next        return length     def __repr__(self):        return "<%s run=%i errors=%i failures=%i>" % \               (_strclass(self.__class__), self.testsRun, len(self.errors),                len(self.failures)) class TestCase:    """A class whose instances are single test cases.     By default, the test code itself should be placed in a method named    'runTest'.     If the fixture may be used for many test cases, create as    many test methods as are needed. When instantiating such a TestCase    subclass, specify in the constructor arguments the name of the test method    that the instance is to execute.     Test authors should subclass TestCase for their own tests. Construction    and deconstruction of the test's environment ('fixture') can be    implemented by overriding the 'setUp' and 'tearDown' methods respectively.     If it is necessary to override the __init__ method, the base class    __init__ method must always be called. It is important that subclasses    should not change the signature of their __init__ method, since instances    of the classes are instantiated automatically by parts of the framework    in order to be run.    """     # This attribute determines which exception will be raised when    # the instance's assertion methods fail; test methods raising this    # exception will be deemed to have 'failed' rather than 'errored'     failureException = AssertionError     def __init__(self, methodName='runTest'):        """Create an instance of the class that will use the named test           method when executed. Raises a ValueError if the instance does           not have a method with the specified name.        """        try:            self._testMethodName = methodName            testMethod = getattr(self, methodName)            self._testMethodDoc = testMethod.__doc__        except AttributeError:            raise ValueError, "no such test method in %s: %s" % \                  (self.__class__, methodName)     def setUp(self):        "Hook method for setting up the test fixture before exercising it."        pass     def tearDown(self):        "Hook method for deconstructing the test fixture after testing it."        pass     def countTestCases(self):        return 1     def defaultTestResult(self):        return TestResult()     def shortDescription(self):        """Returns a one-line description of the test, or None if no        description has been provided.         The default implementation of this method returns the first line of        the specified test method's docstring.        """        doc = self._testMethodDoc        return doc and doc.split("\n")[0].strip() or None     def id(self):        return "%s.%s" % (_strclass(self.__class__), self._testMethodName)     def __str__(self):        return "%s (%s)" % (self._testMethodName, _strclass(self.__class__))     def __repr__(self):        return "<%s testMethod=%s>" % \               (_strclass(self.__class__), self._testMethodName)     def run(self, result=None):        if result is None: result = self.defaultTestResult()        result.startTest(self)        testMethod = getattr(self, self._testMethodName)        try:            try:                self.setUp()            except KeyboardInterrupt:                raise            except:                result.addError(self, self._exc_info())                return             ok = False            try:                testMethod()                ok = True            except self.failureException:                result.addFailure(self, self._exc_info())            except KeyboardInterrupt:                raise            except:                result.addError(self, self._exc_info())             try:                self.tearDown()            except KeyboardInterrupt:                raise            except:                result.addError(self, self._exc_info())                ok = False            if ok: result.addSuccess(self)        finally:            result.stopTest(self)     def __call__(self, *args, **kwds):        return self.run(*args, **kwds)     def debug(self):        """Run the test without collecting errors in a TestResult"""        self.setUp()        getattr(self, self._testMethodName)()        self.tearDown()     def _exc_info(self):        """Return a version of sys.exc_info() with the traceback frame           minimised; usually the top level of the traceback frame is not           needed.        """        exctype, excvalue, tb = sys.exc_info()        if sys.platform[:4] == 'java': ## tracebacks look different in Jython            return (exctype, excvalue, tb)        return (exctype, excvalue, tb)     def fail(self, msg=None):        """Fail immediately, with the given message."""        raise self.failureException, msg     def failIf(self, expr, msg=None):        "Fail the test if the expression is true."        if expr: raise self.failureException, msg     def failUnless(self, expr, msg=None):        """Fail the test unless the expression is true."""        if not expr: raise self.failureException, msg     def failUnlessRaises(self, excClass, callableObj, *args, **kwargs):        """Fail unless an exception of class excClass is thrown           by callableObj when invoked with arguments args and keyword           arguments kwargs. If a different type of exception is           thrown, it will not be caught, and the test case will be           deemed to have suffered an error, exactly as for an           unexpected exception.        """        try:            callableObj(*args, **kwargs)        except excClass:            return        else:            if hasattr(excClass,'__name__'): excName = excClass.__name__            else: excName = str(excClass)            raise self.failureException, "%s not raised" % excName     def failUnlessEqual(self, first, second, msg=None):        """Fail if the two objects are unequal as determined by the '=='           operator.        """        if not first == second:            raise self.failureException, \                  (msg or '%r != %r' % (first, second))     def failIfEqual(self, first, second, msg=None):        """Fail if the two objects are equal as determined by the '=='           operator.        """        if first == second:            raise self.failureException, \                  (msg or '%r == %r' % (first, second))     def failUnlessAlmostEqual(self, first, second, places=7, msg=None):        """Fail if the two objects are unequal as determined by their           difference rounded to the given number of decimal places           (default 7) and comparing to zero.            Note that decimal places (from zero) are usually not the same           as significant digits (measured from the most signficant digit).        """        if round(second-first, places) != 0:            raise self.failureException, \                  (msg or '%r != %r within %r places' % (first, second, places))     def failIfAlmostEqual(self, first, second, places=7, msg=None):        """Fail if the two objects are equal as determined by their           difference rounded to the given number of decimal places           (default 7) and comparing to zero.            Note that decimal places (from zero) are usually not the same           as significant digits (measured from the most signficant digit).        """        if round(second-first, places) == 0:            raise self.failureException, \                  (msg or '%r == %r within %r places' % (first, second, places))     # Synonyms for assertion methods     assertEqual = assertEquals = failUnlessEqual     assertNotEqual = assertNotEquals = failIfEqual     assertAlmostEqual = assertAlmostEquals = failUnlessAlmostEqual     assertNotAlmostEqual = assertNotAlmostEquals = failIfAlmostEqual     assertRaises = failUnlessRaises     assert_ = assertTrue = failUnless     assertFalse = failIf   class TestSuite:    """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 __init__(self, tests=()):        self._tests = []        self.addTests(tests)     def __repr__(self):        return "<%s tests=%s>" % (_strclass(self.__class__), self._tests)     __str__ = __repr__     def __iter__(self):        return iter(self._tests)     def countTestCases(self):        cases = 0        for test in self._tests:            cases += test.countTestCases()        return cases     def addTest(self, test):        # sanity checks        if not callable(test):            raise TypeError("the test to add must be callable")        if (isinstance(test, (type, types.ClassType)) and            issubclass(test, (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._tests:            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._tests: test.debug()  class FunctionTestCase(TestCase):    """A test case that wraps a test function.     This is useful for slipping pre-existing test functions into the    PyUnit framework. Optionally, set-up and tidy-up functions can be    supplied. As with TestCase, the tidy-up ('tearDown') function will    always be called if the set-up ('setUp') function ran successfully.    """     def __init__(self, testFunc, setUp=None, tearDown=None,                 description=None):        TestCase.__init__(self)        self.__setUpFunc = setUp        self.__tearDownFunc = tearDown        self.__testFunc = testFunc        self.__description = description     def setUp(self):        if self.__setUpFunc is not None:            self.__setUpFunc()     def tearDown(self):        if self.__tearDownFunc is not None:            self.__tearDownFunc()     def runTest(self):        self.__testFunc()     def id(self):        return self.__testFunc.__name__     def __str__(self):        return "%s (%s)" % (_strclass(self.__class__), self.__testFunc.__name__)     def __repr__(self):        return "<%s testFunc=%s>" % (_strclass(self.__class__), self.__testFunc)     def shortDescription(self):        if self.__description is not None: return self.__description        doc = self.__testFunc.__doc__        return doc and doc.split("\n")[0].strip() or None   ############################################################################### Locating and loading tests############################################################################## class TestLoader:    """This class is responsible for loading tests according to various    criteria and returning them wrapped in a Test    """    testMethodPrefix = 'test'    sortTestMethodsUsing = cmp    suiteClass = TestSuite     def loadTestsFromTestCase(self, testCaseClass):

Lines 1–500 of 816.