1 files changed, 11 insertions, 0 deletions
diff --git a/tests/rest/client/test_account.py b/tests/rest/client/test_account.py
index 27946febff..e00b5c171c 100644
--- a/tests/rest/client/test_account.py
+++ b/tests/rest/client/test_account.py
@@ -89,6 +89,17 @@ class PasswordResetTestCase(unittest.HomeserverTestCase):
         self.store = hs.get_datastores().main
         self.submit_token_resource = PasswordResetSubmitTokenResource(hs)
 
+    def attempt_wrong_password_login(self, username: str, password: str) -> None:
+        """Attempts to login as the user with the given password, asserting
+        that the attempt *fails*.
+        """
+        body = {"type": "m.login.password", "user": username, "password": password}
+
+        channel = self.make_request(
+            "POST", "/_matrix/client/r0/login", json.dumps(body).encode("utf8")
+        )
+        self.assertEqual(channel.code, 403, channel.result)
+
     def test_basic_password_reset(self) -> None:
         """Test basic password reset flow"""
         old_password = "monkey"