Vitest and Jest Test Challenges Course

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

7 lessons
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Step by step lessons

Course Lessons

7 lessons to learn everything about Vitest and Jest Test Challenges

Testing Challenges with Async Behaviour in Jest or Vitest

1
PRO

Challenge: Testing a debounced function

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

Start
2
PRO

Challenge: Async expect().resolves bug

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

Start

Setup and Teardown Testing Challenges

3
PRO

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

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

Start

Jest and Vitest Matchers Testing Challenges

4
PRO

Challenge: partial object matches - a few approaches

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

Start

Testing Challenges with jest.spyOn or vi.spyOn

5
PRO

Challenge: Using spyOn with getters

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

Start
6
PRO

Challenge: fix the spy problem!

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?

Start

Jest and Vitest Basics - Testing Challenges

7
PRO

Challenge: fix this empty value test bug

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?

Start

More Challenges Coming Soon!

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