def test_or_else(self):
self.assertEqual(EMPTY.or_else(1), 1)
self.assertIsNone(Optional(None).or_else(10))
self.assertEqual(Optional(10).or_else(1), 10)
def test_present(self):
self.assertFalse(EMPTY.present())
self.assertTrue(Optional(None).present())
self.assertTrue(Optional(1).present())
def test_get1(self):
self.assertIsNone(Optional(None).get())
self.assertEqual(Optional(1).get(), 1)
def test_EMPTY(self):
self.assertNotEqual(EMPTY, Optional(None))
self.assertNotEqual(Optional(None), EMPTY)
self.assertNotEqual(EMPTY, Optional(1))
self.assertNotEqual(Optional(1), EMPTY)