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Direktori : /opt/alt/python37/lib/python3.7/site-packages/nose/ |
Current File : //opt/alt/python37/lib/python3.7/site-packages/nose/case.py |
"""nose unittest.TestCase subclasses. It is not necessary to subclass these classes when writing tests; they are used internally by nose.loader.TestLoader to create test cases from test functions and methods in test classes. """ import logging import sys import unittest from inspect import isfunction from nose.config import Config from nose.failure import Failure # for backwards compatibility from nose.util import resolve_name, test_address, try_run log = logging.getLogger(__name__) __all__ = ['Test'] class Test(unittest.TestCase): """The universal test case wrapper. When a plugin sees a test, it will always see an instance of this class. To access the actual test case that will be run, access the test property of the nose.case.Test instance. """ __test__ = False # do not collect def __init__(self, test, config=None, resultProxy=None): # sanity check if not callable(test): raise TypeError("nose.case.Test called with argument %r that " "is not callable. A callable is required." % test) self.test = test if config is None: config = Config() self.config = config self.tbinfo = None self.capturedOutput = None self.resultProxy = resultProxy self.plugins = config.plugins self.passed = None unittest.TestCase.__init__(self) def __call__(self, *arg, **kwarg): return self.run(*arg, **kwarg) def __str__(self): name = self.plugins.testName(self) if name is not None: return name return str(self.test) def __repr__(self): return "Test(%r)" % self.test def afterTest(self, result): """Called after test is complete (after result.stopTest) """ try: afterTest = result.afterTest except AttributeError: pass else: afterTest(self.test) def beforeTest(self, result): """Called before test is run (before result.startTest) """ try: beforeTest = result.beforeTest except AttributeError: pass else: beforeTest(self.test) def exc_info(self): """Extract exception info. """ exc, exv, tb = sys.exc_info() return (exc, exv, tb) def id(self): """Get a short(er) description of the test """ return self.test.id() def address(self): """Return a round-trip name for this test, a name that can be fed back as input to loadTestByName and (assuming the same plugin configuration) result in the loading of this test. """ if hasattr(self.test, 'address'): return self.test.address() else: # not a nose case return test_address(self.test) def _context(self): try: return self.test.context except AttributeError: pass try: return self.test.__class__ except AttributeError: pass try: return resolve_name(self.test.__module__) except AttributeError: pass return None context = property(_context, None, None, """Get the context object of this test (if any).""") def run(self, result): """Modified run for the test wrapper. From here we don't call result.startTest or stopTest or addSuccess. The wrapper calls addError/addFailure only if its own setup or teardown fails, or running the wrapped test fails (eg, if the wrapped "test" is not callable). Two additional methods are called, beforeTest and afterTest. These give plugins a chance to modify the wrapped test before it is called and do cleanup after it is called. They are called unconditionally. """ if self.resultProxy: result = self.resultProxy(result, self) try: try: self.beforeTest(result) self.runTest(result) except KeyboardInterrupt: raise except: err = sys.exc_info() result.addError(self, err) finally: self.afterTest(result) def runTest(self, result): """Run the test. Plugins may alter the test by returning a value from prepareTestCase. The value must be callable and must accept one argument, the result instance. """ test = self.test plug_test = self.config.plugins.prepareTestCase(self) if plug_test is not None: test = plug_test test(result) def shortDescription(self): desc = self.plugins.describeTest(self) if desc is not None: return desc # work around bug in unittest.TestCase.shortDescription # with multiline docstrings. test = self.test try: test._testMethodDoc = test._testMethodDoc.strip()# 2.5 except AttributeError: try: # 2.4 and earlier test._TestCase__testMethodDoc = \ test._TestCase__testMethodDoc.strip() except AttributeError: pass # 2.7 compat: shortDescription() always returns something # which is a change from 2.6 and below, and breaks the # testName plugin call. try: desc = self.test.shortDescription() except Exception: # this is probably caused by a problem in test.__str__() and is # only triggered by python 3.1's unittest! pass try: if desc == str(self.test): return except Exception: # If str() triggers an exception then ignore it. # see issue 422 pass return desc class TestBase(unittest.TestCase): """Common functionality for FunctionTestCase and MethodTestCase. """ __test__ = False # do not collect def id(self): return str(self) def runTest(self): self.test(*self.arg) def shortDescription(self): if hasattr(self.test, 'description'): return self.test.description func, arg = self._descriptors() doc = getattr(func, '__doc__', None) if not doc: doc = str(self) return doc.strip().split("\n")[0].strip() class FunctionTestCase(TestBase): """TestCase wrapper for test functions. Don't use this class directly; it is used internally in nose to create test cases for test functions. """ __test__ = False # do not collect def __init__(self, test, setUp=None, tearDown=None, arg=tuple(), descriptor=None): """Initialize the MethodTestCase. Required argument: * test -- the test function to call. Optional arguments: * setUp -- function to run at setup. * tearDown -- function to run at teardown. * arg -- arguments to pass to the test function. This is to support generator functions that yield arguments. * descriptor -- the function, other than the test, that should be used to construct the test name. This is to support generator functions. """ self.test = test self.setUpFunc = setUp self.tearDownFunc = tearDown self.arg = arg self.descriptor = descriptor TestBase.__init__(self) def address(self): """Return a round-trip name for this test, a name that can be fed back as input to loadTestByName and (assuming the same plugin configuration) result in the loading of this test. """ if self.descriptor is not None: return test_address(self.descriptor) else: return test_address(self.test) def _context(self): return resolve_name(self.test.__module__) context = property(_context, None, None, """Get context (module) of this test""") def setUp(self): """Run any setup function attached to the test function """ if self.setUpFunc: self.setUpFunc() else: names = ('setup', 'setUp', 'setUpFunc') try_run(self.test, names) def tearDown(self): """Run any teardown function attached to the test function """ if self.tearDownFunc: self.tearDownFunc() else: names = ('teardown', 'tearDown', 'tearDownFunc') try_run(self.test, names) def __str__(self): func, arg = self._descriptors() if hasattr(func, 'compat_func_name'): name = func.compat_func_name else: name = func.__name__ name = "%s.%s" % (func.__module__, name) if arg: name = "%s%s" % (name, arg) # FIXME need to include the full dir path to disambiguate # in cases where test module of the same name was seen in # another directory (old fromDirectory) return name __repr__ = __str__ def _descriptors(self): """Get the descriptors of the test function: the function and arguments that will be used to construct the test name. In most cases, this is the function itself and no arguments. For tests generated by generator functions, the original (generator) function and args passed to the generated function are returned. """ if self.descriptor: return self.descriptor, self.arg else: return self.test, self.arg class MethodTestCase(TestBase): """Test case wrapper for test methods. Don't use this class directly; it is used internally in nose to create test cases for test methods. """ __test__ = False # do not collect def __init__(self, method, test=None, arg=tuple(), descriptor=None): """Initialize the MethodTestCase. Required argument: * method -- the method to call, may be bound or unbound. In either case, a new instance of the method's class will be instantiated to make the call. Note: In Python 3.x, if using an unbound method, you must wrap it using pyversion.unbound_method. Optional arguments: * test -- the test function to call. If this is passed, it will be called instead of getting a new bound method of the same name as the desired method from the test instance. This is to support generator methods that yield inline functions. * arg -- arguments to pass to the test function. This is to support generator methods that yield arguments. * descriptor -- the function, other than the test, that should be used to construct the test name. This is to support generator methods. """ self.method = method self.test = test self.arg = arg self.descriptor = descriptor if isfunction(method): raise ValueError("Unbound methods must be wrapped using pyversion.unbound_method before passing to MethodTestCase") self.cls = method.__self__.__class__ self.inst = self.cls() if self.test is None: method_name = self.method.__name__ self.test = getattr(self.inst, method_name) TestBase.__init__(self) def __str__(self): func, arg = self._descriptors() if hasattr(func, 'compat_func_name'): name = func.compat_func_name else: name = func.__name__ name = "%s.%s.%s" % (self.cls.__module__, self.cls.__name__, name) if arg: name = "%s%s" % (name, arg) return name __repr__ = __str__ def address(self): """Return a round-trip name for this test, a name that can be fed back as input to loadTestByName and (assuming the same plugin configuration) result in the loading of this test. """ if self.descriptor is not None: return test_address(self.descriptor) else: return test_address(self.method) def _context(self): return self.cls context = property(_context, None, None, """Get context (class) of this test""") def setUp(self): try_run(self.inst, ('setup', 'setUp')) def tearDown(self): try_run(self.inst, ('teardown', 'tearDown')) def _descriptors(self): """Get the descriptors of the test method: the method and arguments that will be used to construct the test name. In most cases, this is the method itself and no arguments. For tests generated by generator methods, the original (generator) method and args passed to the generated method or function are returned. """ if self.descriptor: return self.descriptor, self.arg else: return self.method, self.arg