What are some examples of testing in Angular?

What are some examples of testing in Angular?

In Angular, you can use Jasmine and Karma for unit testing. For example, testing a component's functionality.

Can you give me a specific example of a unit test for a component?

Sure! Here's a simple test for a component that adds two numbers:

it('should add two numbers', () => {
  const result = component.add(2, 3);
  expect(result).toBe(5);
});

What about testing services in Angular?

For services, you can use the TestBed to configure the testing module. Here's an example:

it('should fetch data', () => {
  service.getData().subscribe(data => {
    expect(data).toBeTruthy();
  });
});

How do I test asynchronous code in Angular?

You can use the async and fakeAsync utilities from Angular testing. For example:

it('should fetch data asynchronously', fakeAsync(() => {
  let data;
  service.getData().subscribe(res => data = res);
  tick();
  expect(data).toBeTruthy();
}));