Allow stubbing specific actions only

[posva]

What problem is this solving

createTestingPinia() can stub or spy all actions but in some cases, it's useful to stub only a few ones

Proposed solution

• Adapt the option of stubActions for { include, exclude }

• Document that you can mock a specific action:

  const counter = useStore()
  vi.spyOn(counter, 'increment').mockImplementation(() => {})
  // or if using testing pinia
  counter.increment.mockImplementation()
  

  • see https://pinia.vuejs.org/cookbook/testing.html#Mocking-the-returned-value-of-an-action to have the second version wor

Describe alternatives you've considered

No response