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Settle an argument: what is an integration test, and is that the same as an end-to-end test? Secondly, is testing a React component a "unit test"?

To me, unit tests only require one system under test. So a react component test can be a unit test if that’s a basic building block in your software. But if you’re testing something that operates at the framework level, that could even be e2e.

I think end to end tests generally need to be at the level of final consumption. For a user facing app, it’s black box testing for the whole system. But for a dev tool, it might be a script that initializes and verifies itself.