The API tests passed. The database didn't.
Compare recorded SQL between releases with proxymock. Find query-count drift, new statements, captured DDL, and timing changes that HTTP tests can miss.
Posts about developer tools
Browse 83 posts in this category
Did It Actually Send?
Part 4 of Getting Started with Mocks: the notifier stops returning a message and starts sending one, so the test needs a spy instead of a return value.
FastAPI Testing: Mock LLM APIs with Recorded Traffic
Record real LLM traffic from a FastAPI app, mock it locally, and replay it in CI with proxymock.
Fixing 403 auth errors when you replay traffic
Replay an authenticated flow and the protected calls fail with 403. Here is how proxymock recommendations fix the expired bearer token in one click.
Test and Mock GraphQL APIs Without Trusting the 200
Generate GraphQL tests and mocks from a schema with proxymock, catch failures hidden inside HTTP 200 responses, and flag schema changes before clients break.
How to Test Your React Frontend When the Backend Is Offline
Learn how to test your React frontend without running backend services. Record real API traffic and mock responses for faster development, reliable.
Replay Recorded API Sessions as Datadog Synthetics Tests
Export a recorded API session to Datadog Synthetics with proxymock. Review step limits, variable chaining, credentials, and assertions before publishing.
Make Failure Boring with Mocks
Part 3 of Getting Started with Mocks: the same seam, now returning refusals, timeouts and nonsense, so the failure paths finally get tested.
mitmproxy vs. proxymock for API Traffic Replay
A pragmatic comparison of mitmproxy and proxymock for traffic replay. Learn which tool to use for investigative debugging vs developer productivity, how.
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