test_discovery.py 文件源码

def test_module_symlink_ok(self):
        full_path = self.setup_module_clash()

        original_realpath = os.path.realpath

        mod_dir = os.path.abspath('bar')
        expected_dir = os.path.abspath('foo')

        def cleanup():
            os.path.realpath = original_realpath
        self.addCleanup(cleanup)

        def realpath(path):
            if path == os.path.join(mod_dir, 'foo.py'):
                return os.path.join(expected_dir, 'foo.py')
            return path
        os.path.realpath = realpath
        loader = unittest.TestLoader()
        loader.discover(start_dir='foo', pattern='foo.py')