What are the best practices for testing async functions in Vue.js with Jest?

What are the best practices for testing async functions in Vue.js with Jest?

When testing async functions in Vue.js with Jest, it's important to use the async/await syntax for better readability. Also, ensure you use flushPromises to wait for all promises to resolve before making assertions.

Can you explain how to use flushPromises in my tests?

Sure! flushPromises is a utility function that you can create to wait for all pending promises to resolve. You can use it like this: await flushPromises(); after triggering an async action in your test.

What about mocking API calls in my tests?

You can use Jest's jest.mock to mock API calls. This allows you to simulate different responses and test how your component behaves without making actual network requests.

Are there any specific Jest matchers I should use for async tests?

Yes! Use matchers like toBeTruthy, toEqual, or toHaveBeenCalled to assert the expected outcomes of your async functions. They work well with async tests.