Mock External APIs at Runtime with Mountebank

Tue, 28 May 2024 00:00:00 +0000

Integration tests that hit real external APIs are slow, flaky, and impossible to run in CI without credentials. But completely mocking at the unit level loses confidence — you’re not testing how your code actually serializes requests, handles auth headers, or parses responses.

The sweet spot is a real HTTP server that returns pre-programmed responses. Your application thinks it’s talking to Salesforce. It’s actually talking to a container on localhost.

Testing on Adam Vu

Mock External APIs at Runtime with Mountebank