What is Angular Testing Library and how do I use it?

What is Angular Testing Library and how do I use it?

Angular Testing Library is a set of utilities for testing Angular components. It encourages good testing practices by focusing on testing the behavior of your components rather than their implementation details.

Can you give me an example of how to test a component using it?

Sure! To test a component, you can use the render function to create an instance of your component and then use queries to interact with it. For example:

import { render, screen } from '@testing-library/angular';
import { MyComponent } from './my-component.component';

test('it displays the title', () => {
  render(MyComponent);
  expect(screen.getByText('My Component Title')).toBeInTheDocument();
});

What are some best practices for writing tests with Angular Testing Library?

Some best practices include:

1. Focus on user interactions and behaviors.
2. Avoid testing implementation details.
3. Use descriptive test names.
4. Keep tests isolated and independent.