test_program.py 文件源码

def testWarning(self):
        """Test the warnings argument"""
        # see #10535
        class FakeTP(unittest.TestProgram):
            def parseArgs(self, *args, **kw): pass
            def runTests(self, *args, **kw): pass
        warnoptions = sys.warnoptions[:]
        try:
            sys.warnoptions[:] = []
            # no warn options, no arg -> default
            self.assertEqual(FakeTP().warnings, 'default')
            # no warn options, w/ arg -> arg value
            self.assertEqual(FakeTP(warnings='ignore').warnings, 'ignore')
            sys.warnoptions[:] = ['somevalue']
            # warn options, no arg -> None
            # warn options, w/ arg -> arg value
            self.assertEqual(FakeTP().warnings, None)
            self.assertEqual(FakeTP(warnings='ignore').warnings, 'ignore')
        finally:
            sys.warnoptions[:] = warnoptions