use-assert-in

Collection: fixit-extra Autofix: Yes Python: Any

Discourages use of assertTrue(x in y) and assertFalse(x in y). Use assertIn(x, y) and assertNotIn(x, y) instead.

Message

Use assertIn/assertNotIn instead of assertTrue/assertFalse for inclusion check.

References

• unittest deprecated aliases

• unittest assertIn

Valid examples

self.assertIn(a, b)

self.assertIn(f(), b)

self.assertIn(f(x), b)

self.assertIn(f(g(x)), b)

self.assertNotIn(a, b)

self.assertNotIn(f(), b)

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self.assertNotIn(f(x), b)

self.assertNotIn(f(g(x)), b)

Invalid examples

self.assertTrue(a in b)

Suggested fix

self.assertIn(a, b)

self.assertTrue(f() in b)

Suggested fix

self.assertIn(f(), b)

self.assertTrue(f(x) in b)

Suggested fix

self.assertIn(f(x), b)

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self.assertTrue(f(g(x)) in b)

Suggested fix

self.assertIn(f(g(x)), b)

self.assertTrue(a not in b)

Suggested fix

self.assertNotIn(a, b)

self.assertTrue(not a in b)

Suggested fix

self.assertNotIn(a, b)

self.assertFalse(a in b)

Suggested fix

self.assertNotIn(a, b)