Refs -- Added test for RelatedManager.add()/remove() with an invalid type.
@@ -104,6 +104,12 @@ class ManyToManyTests(TestCase):
a5.authors.remove(user_2.username)
self.assertQuerysetEqual(a5.authors.all(), [])
+ def test_add_remove_invalid_type(self):
+ msg = "Field 'id' expected a number but got 'invalid'."
+ for method in ['add', 'remove']:
+ with self.subTest(method), self.assertRaisesMessage(ValueError, msg):
+ getattr(self.a1.publications, method)('invalid')
+
def test_reverse_add(self):
# Adding via the 'other' end of an m2m
a5 = Article(headline='NASA finds intelligent life on Mars')
