def test_exc(self):
for exc in ValueError, KeyError, ZeroDivisionError:
f = Present(exception=exc())
self.assertIsInstance(f, Future)
self.assertTrue(f.done())
self.assertRaises(exc, f.result)
def test_res(self):
for val in 1, 'x', True, False, State(problem=1), lambda: None:
f = Present(result=val)
self.assertIsInstance(f, Future)
self.assertTrue(f.done())
self.assertEqual(f.result(), val)