Method test_nullcontext

Lib/test/test_contextlib.py:434–439

(self)

class NullcontextTestCase(unittest.TestCase):
    def test_nullcontext(self):
        class C:
            pass
        c = C()
        with nullcontext(c) as c_in:
            self.assertIs(c_in, c)


class FileContextTestCase(unittest.TestCase):