Vitest and Jest Test Challenges Course

Take on our challenges to fix some broken tests - testing your knowledge of how Jest or Vitest works.

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Challenges

7 challenges to learn everything about Vitest and Jest Test Challenges

Testing Challenges with Async Behaviour in Jest or Vitest

Challenge: Testing a debounced function

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Learn how to test components that use debounced functions, including how to control timers and verify delayed execution

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Challenge: Async expect().resolves bug

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Another bug related to async behaviour! Why is this test passing, even though it should fail!

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Setup and Teardown Testing Challenges

Challenge: fix this each() with beforeAll() bug

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In this challenge you have the test set up to pass... but something is stopping it from passing! Have a go at fixing it!

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Jest and Vitest Matchers Testing Challenges

Challenge: partial object matches - a few approaches

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In this challenge we have some objects to compare to. But the tests just are not passing! Fix them!

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Testing Challenges with jest.spyOn or vi.spyOn

Challenge: Using spyOn with getters

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In this challenge you have to use spyOn with a getter property on an object

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Challenge: fix the spy problem!

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In this challenge we are trying to greet with James Bond, the well known spy. But the test is not passing. Can you see why?

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Jest and Vitest Basics - Testing Challenges

Challenge: fix this empty value test bug

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This challenge has a fully working and passing test - but it is incorrectly written and is testing incorrectly. Can you work out why this test is able to pass?

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More Challenges Coming Soon!

Stay tuned - adding more challenges very soon! Please use the feedback form to let me know how you find them