LightningTalk: E2E test with Ecto
summary
Ecto SQL Sandbox plug exposes a test route so a POST to /api/sandbox returns a sandbox ID that the front end adds to every request, letting a browser‑driven app exercise the real backend in isolation; tests then send a DELETE to the same endpoint to roll back. Works with Hound and with ExMachina-based endpoints to create fixture data from the front end, is a bit slow and needs longer timeouts. Ecto SQL Sandbox plug POST to /api/sandbox returns sandbox ID DELETE to clear sandbox
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