What are the best practices for mocking in Vue Test Utils?

What are the best practices for mocking in Vue Test Utils?

When mocking in Vue Test Utils, it's important to isolate components, use stubs for child components, and ensure your mocks reflect the real behavior as closely as possible.

Can you give an example of how to mock a child component?

Sure! You can use the shallowMount function and pass a stubs option to replace the child component with a stub. For example:

shallowMount(MyComponent, {
  stubs: { ChildComponent: true }
});

What about mocking methods or computed properties?

You can mock methods by providing a methods option in the mount function. For computed properties, you can use the computed option. Here's an example:

shallowMount(MyComponent, {
  methods: { myMethod: jest.fn() },
  computed: { myComputed: () => 'mocked value' }
});

Are there any tools that can help with mocking?

Yes! Libraries like Jest and Sinon are great for creating mocks and spies, and they integrate well with Vue Test Utils.