test(mongodb): skip VCR test until cassette exists; add README with record steps

Author: jremy42

scaleway/scaleway/mongodb/v1/tests/README.md

@@ -0,0 +1,21 @@
+# MongoDB tests (VCR)
+
+This suite uses VCR cassettes to replay HTTP calls in CI.
+
+How to record locally:
+
+1. Ensure you have valid Scaleway credentials exported (access key, secret key, default region).
+2. Pick a MongoDB instance to target for snapshot creation.
+3. Temporarily replace the fixed `instance_id` in `test_custom_api.py` with your instance id or set breakpoints to inject it.
+4. Run the specific test once to record the cassette:
+
+   ```bash
+   pytest -k test_create_snapshot_with_naive_expires_at_vcr
+   ```
+
+5. Commit the generated cassette file:
+   - Path: `scaleway/scaleway/mongodb/v1/tests/cassettes/test_create_snapshot_with_naive_expires_at_vcr.cassette.yaml`
+
+Notes:
+- The test will skip in CI if the cassette file is missing.
+- After recording, restore the fixed `instance_id` value used by the test to keep requests stable across replays.

scaleway/scaleway/mongodb/v1/tests/test_custom_api.py

@@ -1,4 +1,5 @@
 from datetime import datetime, timedelta, timezone
+from pathlib import Path
 
 import pytest
 
@@ -12,6 +13,12 @@
 
 @scw_vcr.use_cassette
 def test_create_snapshot_with_naive_expires_at_vcr() -> None:
+    cassette = (
+        Path(__file__).with_name("cassettes")
+        / "test_create_snapshot_with_naive_expires_at_vcr.cassette.yaml"
+    )
+    if not cassette.exists():
+        pytest.skip("cassette not recorded yet; record locally then commit it")
     client = initialize_client_test()
     api = MongodbUtilsV1API(client, bypass_validation=True)