How to test Angular 17 using Cypress.io

Before I even get started on Cypress and Angular, I have to say the new design on Angular.dev looks incredible. It is full on conference season so I hope that they printed some kick ass custom-stickers from Sticker Mule and are bringing them out to Vegas!

Cypress JavaScript Testing

Cypress is a popular JavaScript end-to-end testing framework. It is known for being easy to use and fast. Cypress is also able to test Angular components.

What is Angular component testing?

Angular component testing is a type of testing that ensures that Angular components are working correctly. Angular components are the basic building blocks of Angular applications. They encapsulate HTML, CSS, and JavaScript code.

Why use Cypress for Angular component testing?

There are many reasons to use Cypress for Angular component testing. Some of the benefits include:

• Cypress is easy to use and learn.
• Cypress is fast and performant.
• Cypress supports many Angular features, including directives, pipes, and services.
• Cypress can be used to test Angular components in isolation or in the context of a larger application.

Getting started with Cypress component testing

To get started with Cypress component testing, you will need to install Cypress and the Cypress Angular support package. You can do this by running the following commands in your terminal:

npm install cypress -D

Once Cypress is installed, you can create a new test file. For example, you could create a file called stepper.component.cy.ts. This file will contain the tests for your stepper component.

Writing your first Angular component test

The following code snippet shows how to write a simple test for a stepper component:

import { StepperComponent } from './stepper.component';

describe('StepperComponent', () => {
	it('should render the stepper component', () => {
		cy.mount(StepperComponent);
	});
});

This test will check that the stepper component is created and that it is visible.

Advanced topics in Angular component testing

There are many advanced topics in Angular component testing. Some of these topics include:

• Testing Angular components with data binding
• Testing Angular components with RxJS
• Testing Angular components with router
• Testing Angular components with Angular Material

If you are interested in learning more about these topics, I recommend checking out the Cypress documentation.

Conclusion

Angular component testing is an important part of developing Angular applications. Cypress is a powerful tool for Angular component testing. It is easy to use, fast, and supports many Angular features. I hope this blog post has helped you get started with Angular component testing with Cypress.

Links

• https://docs.cypress.io/guides/component-testing/angular/overview
• https://docs.cypress.io/guides/component-testing/getting-started