Performance

[Ray]

Hi,

In some (proprietary) projects I am involved in, Mockito seems to be the primary reason why our unit tests are slow.

Are there any tools to show which mocks take a long time to create, or tips on how to make Mockito faster?

Thanks for any tips or information anyone can provide.

-Ray

[Tim van der Lippe]

Please join the discussion at https://github.com/mockito/mockito/issues/2178

Op vr 12 feb. 2021 om 23:14 schreef Ray <disp...@gmail.com>:

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[Michael Pinnegar]

I'd you're curious about where your time is going you'd get a lot of easy bang for your buck with a simple test creating your mocks and seeing how much time they take to make.

My guess is mockito uses a lot of reflect under the hood which is inheritly slow.

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[Ray]

Thanks, will follow the Github issue.

I need to do some profiling to get a better sense of where the time is going, and I've only looked at a couple classes, but so far it looks like Mockito slows things down by 50-75% compared to manually creating test stubs.