diff options
Diffstat (limited to 'Lib/idlelib/idle_test/test_delegator.py')
| -rw-r--r-- | Lib/idlelib/idle_test/test_delegator.py | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/Lib/idlelib/idle_test/test_delegator.py b/Lib/idlelib/idle_test/test_delegator.py index b8ae5ee..1f0baa9 100644 --- a/Lib/idlelib/idle_test/test_delegator.py +++ b/Lib/idlelib/idle_test/test_delegator.py @@ -4,34 +4,37 @@ from idlelib.Delegator import Delegator class DelegatorTest(unittest.TestCase): def test_mydel(self): - # test a simple use scenario + # Test a simple use scenario. - # initialize + # Initialize an int delegator. mydel = Delegator(int) self.assertIs(mydel.delegate, int) self.assertEqual(mydel._Delegator__cache, set()) - - # add an attribute: + # Trying to access a non-attribute of int fails. self.assertRaises(AttributeError, mydel.__getattr__, 'xyz') + + # Add real int attribute 'bit_length' by accessing it. bl = mydel.bit_length self.assertIs(bl, int.bit_length) self.assertIs(mydel.__dict__['bit_length'], int.bit_length) self.assertEqual(mydel._Delegator__cache, {'bit_length'}) - # add a second attribute + # Add attribute 'numerator'. mydel.numerator self.assertEqual(mydel._Delegator__cache, {'bit_length', 'numerator'}) - # delete the second (which, however, leaves it in the name cache) + # Delete 'numerator'. del mydel.numerator self.assertNotIn('numerator', mydel.__dict__) - self.assertIn('numerator', mydel._Delegator__cache) + # The current implementation leaves it in the name cache. + # self.assertIn('numerator', mydel._Delegator__cache) + # However, this is not required and not part of the specification - # reset by calling .setdelegate, which calls .resetcache - mydel.setdelegate(float) - self.assertIs(mydel.delegate, float) + # Change delegate to float, first resetting the attributes. + mydel.setdelegate(float) # calls resetcache self.assertNotIn('bit_length', mydel.__dict__) self.assertEqual(mydel._Delegator__cache, set()) + self.assertIs(mydel.delegate, float) if __name__ == '__main__': unittest.main(verbosity=2, exit=2) |