def test_type(self):
k1 = Key('/A/B/C:c')
k2 = Key('/A/B/C:c/D:d')
self.assertRaises(TypeError, k1.isAncestorOf, str(k2))
self.assertTrue(k1.isAncestorOf(k2))
self.assertTrue(k2.isDescendantOf(k1))
self.assertEqual(k1.type, 'C')
self.assertEqual(k2.type, 'D')
self.assertEqual(k1.type, k2.parent.type)
def test_ancestry(self):
k1 = Key('/A/B/C')
k2 = Key('/A/B/C/D')
self.assertEqual(k1._string, '/A/B/C')
self.assertEqual(k2._string, '/A/B/C/D')
self.assertTrue(k1.isAncestorOf(k2))
self.assertTrue(k2.isDescendantOf(k1))
self.assertTrue(Key('/A').isAncestorOf(k2))
self.assertTrue(Key('/A').isAncestorOf(k1))
self.assertFalse(Key('/A').isDescendantOf(k2))
self.assertFalse(Key('/A').isDescendantOf(k1))
self.assertTrue(k2.isDescendantOf(Key('/A')))
self.assertTrue(k1.isDescendantOf(Key('/A')))
self.assertFalse(k2.isAncestorOf(Key('/A')))
self.assertFalse(k1.isAncestorOf(Key('/A')))
self.assertFalse(k2.isAncestorOf(k2))
self.assertFalse(k1.isAncestorOf(k1))
self.assertEqual(k1.child('D'), k2)
self.assertEqual(k1, k2.parent)
self.assertEqual(k1.path, k2.parent.path)
