Refs #24121 -- Added __repr__() to Message.

django/contrib/messages/storage/base.py

@@ -32,6 +32,10 @@ class Message:
     def __str__(self):
         return str(self.message)
 
+    def __repr__(self):
+        extra_tags = f", extra_tags={self.extra_tags!r}" if self.extra_tags else ""
+        return f"Message(level={self.level}, message={self.message!r}{extra_tags})"
+
     @property
     def tags(self):
         return " ".join(tag for tag in [self.extra_tags, self.level_tag] if tag)

tests/messages_tests/tests.py

@@ -17,6 +17,35 @@ class MessageTests(SimpleTestCase):
         self.assertNotEqual(msg_1, msg_3)
         self.assertNotEqual(msg_2, msg_3)
 
+    @override_settings(
+        MESSAGE_TAGS={
+            constants.WARNING: "caution",
+            constants.ERROR: "",
+            12: "custom",
+        }
+    )
+    def test_repr(self):
+        tests = [
+            (constants.INFO, "thing", "", "Message(level=20, message='thing')"),
+            (
+                constants.WARNING,
+                "careful",
+                "tag1 tag2",
+                "Message(level=30, message='careful', extra_tags='tag1 tag2')",
+            ),
+            (
+                constants.ERROR,
+                "oops",
+                "tag",
+                "Message(level=40, message='oops', extra_tags='tag')",
+            ),
+            (12, "custom", "", "Message(level=12, message='custom')"),
+        ]
+        for level, message, extra_tags, expected in tests:
+            with self.subTest(level=level, message=message):
+                msg = Message(level, message, extra_tags=extra_tags)
+                self.assertEqual(repr(msg), expected)
+
 
 class TestLevelTags(SimpleTestCase):
     message_tags = {