Testing Next.js Applications with Cypress-03.png

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Migrate, build and start

Build and start

Build and test

Migrate, build and test

Migrate, build and test components

Gain real-world knowledge for making Next.js websites more reliable through smart testing. You will start this course by understanding the basics of Next.js and how files are organized, and data is fetched. Then, you will explore Cypress, a tool that helps you test your website to ensure everything works as expected.

In this course, you will learn the ins and outs of Cypress by selecting elements and making assertions. Next, you will learn how to test a real-world Next.js application and get hands-on experience writing end-to-end and component tests from scratch.

By the end of this course, you will have the required skills to set up a comprehensible Cypress test suit that can test any web application. Whether you are a seasoned Next.js developer or just getting started, this course empowers you to elevate your testing game, contributing to the overall quality and reliability of your Next.js applications.

Testing Next.js Applications with Cypress

What is a common pattern for organizing end-to-end tests?

What is a common pattern for organizing end-to-end tests?

1. Running the test
2. Preparing the application state by running actions through the UI
3. Resetting the database

1. Resetting the database
2. Seeding the database with the necessary data
3. Running the test

1. Seeding the database with the necessary data
2. Running the test
3. Resetting the database

1. Resetting the database
2. Running the test
3. Seeding the database with the necessary data

What’s the correct order of operations for tests involving a database?

What’s the correct order of operations for tests involving a database?

It waits indefinitely until the elements become actionable.

It waits for a fixed amount of time and then proceeds regardless of the elements' state.

It retries the commands until the elements become actionable within a certain timeframe.

It skips the interaction with elements and moves on to the next command.

What does Cypress do when executing commands that interact with elements?

What does Cypress do when executing commands that interact with elements?

To avoid testing the same functionality multiple times

To prioritize critical features of the application

Why is careful planning necessary for building end-to-end tests?

Why is careful planning necessary for building end-to-end tests?

It checks that an element is visible on the page.

It waits for an element to become clickable.

It asserts that an element has a specific value or state.

What is the purpose of the `.should()` command in Cypress?

What is the purpose of the <code>.should()</code> command in Cypress?

**(Select all that apply.)** Which command gets retried by Cypress?

(Select all that apply.) Which command gets retried by Cypress?

API routes respond to various HTTP methods, while regular webpages primarily respond to GET requests.

API routes typically return JSON data, while regular webpages return HTML markup.

You need to configure Cypress to handle testing API routes as well.

Cypress automatically waits for the request's response and asserts its success.

**(Select all that apply.)** Which statements are correct about end-to-end testing API routes in Cypress?

(Select all that apply.) Which statements are correct about end-to-end testing API routes in Cypress?

**(Select all that apply.)** Which are the drawbacks of end-to-end testing?

(Select all that apply.) Which are the drawbacks of end-to-end testing?

Asserts that all of the parts of the application are working correctly

**(Select all that apply.)** Which are the benefits of end-to-end testing?

(Select all that apply.) Which are the benefits of end-to-end testing?

They improve performance and reduce the test execution time.

They extend Cypress's capabilities and integrate with other parts of the application's ecosystem.

They encapsulate and reuse code across multiple tests.

They automate complex setup processes like database seeding.

**(Select all that apply.)** What are some benefits of using custom Cypress tasks?

(Select all that apply.) What are some benefits of using custom Cypress tasks?

Introduction to Next.js and Testing

Introduction to Cypress

Testing a Next.js Application

End-To-End Testing with Cypress

Component Testing with Cypress

Assessment: Testing Next.js Applications with Cypress

Conclusion

Quiz: End-To-End Testing