Fixed #28393 -- Added helpful error messages for invalid AutoField/FloatField/IntegerField values.

Co-authored-by: Diederik van der Boor <vdboor@edoburu.nl>
Co-authored-by: Nick Pope <nick.pope@flightdataservices.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/model_fields/test_integerfield.py b/tests/model_fields/test_integerfield.py
index 626b67b00b..c72cb48015 100644
--- a/tests/model_fields/test_integerfield.py
+++ b/tests/model_fields/test_integerfield.py
@@ -137,6 +137,23 @@ class IntegerFieldTests(TestCase):
         instance = self.model.objects.get(value='10')
         self.assertEqual(instance.value, 10)
 
+    def test_invalid_value(self):
+        tests = [
+            (TypeError, ()),
+            (TypeError, []),
+            (TypeError, {}),
+            (TypeError, set()),
+            (TypeError, object()),
+            (TypeError, complex()),
+            (ValueError, 'non-numeric string'),
+            (ValueError, b'non-numeric byte-string'),
+        ]
+        for exception, value in tests:
+            with self.subTest(value):
+                msg = "Field 'value' expected a number but got %r." % (value,)
+                with self.assertRaisesMessage(exception, msg):
+                    self.model.objects.create(value=value)
+
 
 class SmallIntegerFieldTests(IntegerFieldTests):
     model = SmallIntegerModel