def test_truthiness(self):
        """
        Test the truthiness of a Null object.

        @raise AssertionError: If the test fails.
        """
        self.assertFalse(bool(self.null))
        self.assertFalse(bool(self.null.attr1))
        self.assertFalse(bool(self.null.attr1.method1()))
        self.assertFalse(bool(self.null.method2().attr2.method1().attr1))

        Test the truthiness of a Null object.

        @raise AssertionError: If the test fails.
        
tests/behavioral_tests/test_null.py