Assertions
| Method | Checks that | New in |
|---|---|---|
|
assertEqual(a, b) |
a == b |
|
|
assertNotEqual(a, b) |
a != b |
|
|
assertTrue(x) |
bool(x) is True |
|
|
assertFalse(x) |
bool(x) is False |
|
|
assertIs(a, b) |
a is b |
2.7 |
|
assertIsNot(a, b) |
a is not b |
2.7 |
|
assertIsNone(x) |
x is None |
2.7 |
|
assertIsNotNone(x) |
x is not None |
2.7 |
|
assertIn(a, b) |
a in b |
2.7 |
|
assertNotIn(a, b) |
a not in b |
2.7 |
|
assertIsInstance(a, b) |
isinstance(a, b) |
2.7 |
|
assertNotIsInstance(a, b) |
not isinstnace(a, b) |
2.7 |
|
assertRaises(exc, fun, args, *kwds) |
fun(*args, **kwds) raises exc |
|
|
assertRaisesRegexp(exc, r, fun, args, *kwds) |
round(a-b, 7) == 0 |
2.7 |
|
assertAlmostEqual(a, b) |
round(a-b, 7) == 0 |
|
|
assertNotAlmostEqual(a, b) |
round(a-b, 7) != 0 |
|
|
assertGreater(a, b) |
a > b |
2.7 |
|
assertGreaterEqual(a, b) |
a >= b |
|
|
assertLess(a, b) |
a < b |
2.7 |
|
assertLessEqual(a, b) |
a <= b |
2.7 |
|
assertRegexpMatches(s, r) |
r.search(s) |
2.7 |
|
assertNotRegexpMatches(a, b) |
not r.search(s) |
2.7 |
|
assertItemsEqual(a, b) |
sorted(a) == sorted(b) Works with unhashable objects |
|
|
assertDictContainsSubset(a, b) |
All the key/value pairs in a exist in b |
2.7 |
Notes
- All the assert methods except
assertRaises()andassertRaisesRegexp()accept amsgargument that, if specified, is used as the error message on failure.