React Testing 101 Component, Integration, and End-to-end Testing_1.png

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This course will provide you with important information, principles, and experience-based advice, to enter the world of testing methodologies. 

Here, you will learn the best practices to follow to write useful and lasting tests, how to test different user flows without a working back-end, how to write effective end-to-end tests (E2E), and how to integrate tests into development and Continuous Integration pipelines.

At the end of the course, you will be able to apply the fundamental principles of the test methodologies to understand what and how to test effectively.

Front-end Testing 101: Integration and End-to-end Testing

## Problem statement
Write a test where a user will visit the `login` page and try to login with `unregistered` credentials. The server should respond with a `422` status code to the login request.

## Expected output


# Problem statement
Write a test where a user will visit the `login` page and try to login with `unregistered` credentials. The server should respond with a `422` status code to the login request.

# Expected output


Can you write a test that will respond with a 422 status code to an unregistered user?

Challenge: Respond to Unregistered User

Introduction

E2E Testing

The First E2E Test

Polishing the E2E test

Ajax Requests

Custom Commands

UI Integration Tests

Other Best Practices

Bonus Section

Conclusion

Appendix

Challenge: Respond to Unregistered User

Problem statement

Expected output