How to reset or clear a spy in Jest?

Thanks to @sdgluck for the answer, though I would like to add to this answer that in my case, I wanted a clear state after each tests since I have multiple tests with same spy. So instead of calling the mockClear() in previous test(s), I moved it into the afterEach() (or you can use it with beforeEach) like so:

afterEach(() => {    
  jest.clearAllMocks();
});

And finally, my tests are working like they should without the spy being called from previous test. You can also read their documentation for it

Option 2

If you wish to do it from a global level, you could also updated your jest.config.js (or from package.json)

module.exports = {
  clearMocks: true,
  // ...
}

You can read Jest documentation about it