fix: use httpx query parameters to correctly URL encode since timestamp

gitea/client.py

@@ -400,10 +400,11 @@ class GiteaClient(IssuesClient, PullRequestsClient, FilesClient, RefsClient, Rep
     def list_unread_notifications(self, since: Optional[str] = None) -> list[dict[str, Any]]:
         try:
             with httpx.Client() as client:
-                url = f"{self.base_url}/api/v1/notifications?all=false"
+                url = f"{self.base_url}/api/v1/notifications"
+                params: dict[str, str] = {"all": "false"}
                 if since:
-                    url += f"&since={since}"
-                response = client.get(url, headers=self.headers)
+                    params["since"] = since
+                response = client.get(url, headers=self.headers, params=params)
                 response.raise_for_status()
                 notifications: list[dict[str, Any]] = response.json()
                 

tests/test_client.py

@@ -93,3 +93,32 @@ def test_gitea_client_list_assigned_pull_requests() -> None:
         assert 2 in numbers
         assert 3 not in numbers
 
+
+def test_gitea_client_list_unread_notifications() -> None:
+    client: GiteaClient = GiteaClient()
+    with patch("httpx.Client.get") as mock_get:
+        mock_response: MagicMock = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = [
+            {"id": 1, "repository": {"owner": {"login": "meeks"}}},
+            {"id": 2, "repository": {"owner": {"login": "other"}}},
+        ]
+        mock_get.return_value = mock_response
+
+        # Test without since
+        res = client.list_unread_notifications()
+        mock_get.assert_called_once()
+        _, kwargs = mock_get.call_args
+        assert kwargs.get("params") == {"all": "false"}
+        assert len(res) == 1
+        assert res[0]["id"] == 1
+
+        mock_get.reset_mock()
+
+        # Test with since
+        res = client.list_unread_notifications(since="2026-06-30T21:41:16+02:00")
+        mock_get.assert_called_once()
+        _, kwargs = mock_get.call_args
+        assert kwargs.get("params") == {"all": "false", "since": "2026-06-30T21:41:16+02:00"}
+
+