You will learn the best practices to follow to write useful and lasting tests and how to write effective end-to-end tests (E2E).

React App Testing

This module will provide you with requisite information, principles, and experience-based advice that you need to enter the world of testing methodologies.

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 finally, how to integrate tests into development and Continuous Integration pipelines.

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

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

## Introduction

Cypress is a modern tool used for testing. It has many advantages over other testing tools, which we will discuss in detail in the [Cypress Vs Other Tools](https://www.educative.io/courses/front-end-testing-integration/cypress-vs-other-tools). Cypress comes with a UI and we can launch its UI with the following command.

```
npx cypress open
```
or 

```
npm run cy:open
```
Let's write the test and run it through a Cypress UI.

## Example

> Note: You can see the Cypress UI better by opening the link next to **Your app can be found at:**

# Introduction

Cypress is a modern tool used for testing. It has many advantages over other testing tools, which we will discuss in detail in the [Cypress Vs Other Tools](https://www.educative.io/courses/front-end-testing-integration/cypress-vs-other-tools). Cypress comes with a UI and we can launch its UI with the following command.

```
npx cypress open
```
or 

```
npm run cy:open
```
Let's write the test and run it through a Cypress UI.

# Example

> Note: You can see the Cypress UI better by opening the link next to **Your app can be found at:**

Learn about Cypress UI and run a simple test using Cypress.

Introduction

E2E Testing

The First E2E Test

Polishing the E2E test

Ajax Requests

Custom Commands

UI Integration Tests

Other Best Practices

Bonus Section

Appendix

Conclusion

Cypress UI

Introduction