fix(mem0-plugin): store files_touched as a list to stop double JSON-encoding (#5806)

integrations/mem0-plugin/tests/test_capture_session_summary.py

@@ -0,0 +1,79 @@
+"""Regression tests for capture_session_summary.py request body construction.
+
+Guards against the double-JSON-encoding bug where ``files_touched`` was stored
+as a pre-serialized JSON string and then encoded a second time with the rest of
+the request body — surfacing as escaped, slash-heavy blobs in the memories shown
+inside Claude Code / Cursor / Codex / Antigravity (all four editors share this
+script).
+"""
+
+from __future__ import annotations
+
+import json
+
+
+class _FakeResp:
+    status = 200
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *_):
+        return False
+
+
+def _capture_request_body(monkeypatch):
+    """Patch urlopen so store_summary posts nowhere; capture the request body."""
+    import capture_session_summary as css
+
+    captured: dict = {}
+
+    def fake_urlopen(req, timeout=0):
+        captured["raw"] = req.data.decode("utf-8")
+        captured["body"] = json.loads(captured["raw"])
+        return _FakeResp()
+
+    monkeypatch.setattr(css.urllib.request, "urlopen", fake_urlopen)
+    return captured, css
+
+
+def test_files_touched_is_json_array_not_double_encoded(monkeypatch):
+    """files_touched must be a real JSON array, encoded exactly once."""
+    captured, css = _capture_request_body(monkeypatch)
+    files = ["mem0/memory/main.py", "src/client/index.ts"]
+
+    css.store_summary(
+        api_key="test-key",
+        summary_prompt="did some work",
+        user_id="u1",
+        session_id="s1",
+        project_id="p1",
+        branch="main",
+        files=files,
+    )
+
+    files_touched = captured["body"]["metadata"]["files_touched"]
+    assert isinstance(files_touched, list), (
+        "files_touched must be a JSON array, not a double-encoded string; "
+        f"got {type(files_touched).__name__}: {files_touched!r}"
+    )
+    assert files_touched == files
+    # The file paths must not appear as an escaped JSON string inside the body.
+    assert '\\"' not in captured["raw"]
+
+
+def test_files_touched_omitted_when_no_files(monkeypatch):
+    """No files touched -> no files_touched key (unchanged behaviour)."""
+    captured, css = _capture_request_body(monkeypatch)
+
+    css.store_summary(
+        api_key="test-key",
+        summary_prompt="did some work",
+        user_id="u1",
+        session_id="s1",
+        project_id="p1",
+        branch="main",
+        files=[],
+    )
+
+    assert "files_touched" not in captured["body"]["metadata"]