Mock and reset spy multiple times in one test

[zirkelc]

I'm using vi.spyOn() to spy or mock instance methods, for example database.query() calls. In one test file, I have several tests and some tests should be able to execute the spied function database.query() and I want to assert the invoked parameters, whereas in other test cases, I want to simply mock the returned value of database.query() without executing a real database query.

I noticed that if I use vi.spyOn(Database.protoype, 'query').mockResolvedValue() once, and the reset it via vi.restoreAllMocks() or calling mockReset() on the spy, it won't reset it to the actual implementation of calling the database.query() function.

This is clearly described in the docs, so my obviously my bad:
https://vitest.dev/api/vi.html#vi-spyon

But I was still wondering what is the actual reason you cannot mock and reset a spy multiple times in one test file?

[hi-ogawa]

Probably this is what you're looking for #6426
We also think current behavior isn't intuitive, but it's a breaking change, so it's planned for next major release.

[zirkelc]

Awesome, thank you!