I don't understand the point of integ tests for a lib. Whatever you can do in a library you can also do as a unit test, but unit tests can also test private functions. What's the benefit here?

The only thing I can think of is that restriction is a feature, as in it ensures that your public API has everything needed to function properly (i.e. things that need to be pub are pub).

I also am curious why cargo test doesn't seem to differentiate between unit or integ tests. I'd think that a lot of binary integration tests wouldn't want to automatically be run locally, while unit tests should be fine.

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