React Component Testing with Vitest

1h 38m 34s
English
Paid
The closer your tests mimic real-world application usage, the more confidence they provide. However, for a long time, web developers had to test interfaces in artificial environments like JSDOM, which required a lot of configurations and workarounds. It's time to change the approach: now you can test React components directly in the browser using Vitest Browser Mode.
Read more about the course

In this practical course, you will learn to:

  • Set up and use Vitest Browser Mode for component testing in a real browser;
  • Understand the limitations of JSDOM and the reasons for transitioning to browser testing;
  • Migrate existing tests from JSDOM to browser mode;
  • Configure Playwright for browser automation testing of components;
  • Organize the test environment and combine unit and component tests in one project.

You will master best practices in:

  • Locating elements as real users do;
  • Implementing user events;
  • Mocking APIs using Mock Service Worker;
  • Reliable verification of the presence or absence of elements;
  • Testing page transitions.

Additionally, you will learn effective methods for debugging tests: inspecting the DOM state, using the debugger, conditional breakpoints, and other tools that will make dealing with failing tests easier and clearer.

Who this course is for

This course is designed for all React developers who wish to write reliable and useful tests for their components, regardless of their level of experience in testing. You will discover new tools, APIs, and approaches that will help increase the value of your test suite.

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# Title Duration
1 Introduction to React Component Testing with Vitest Browser Mode 01:50
2 Sunsetting JSDOM 01:32
3 Break JSDOM - Problem 00:48
4 Break JSDOM - Solution 03:32
5 Recap Of Sunsetting JSDOM 00:27
6 Vitest Browser Mode 04:00
7 Installation and Setup - Problem 02:50
8 Installation and Setup - Solution 00:13
9 Migrate The Test - Problem 00:35
10 Migrate The Test - Solution 03:12
11 Playwright - Problem 01:16
12 Playwright - Solution 02:58
13 Shared Assets - Problem 00:41
14 Shared Assets - Solution 04:15
15 Multiple Workspaces - Problem 00:51
16 Multiple Workspaces - Solution 07:20
17 Outro Vitest Browser Mode 00:42
18 Best Practices 01:45
19 Queries - Problem 00:44
20 Queries - Solution 05:42
21 User Events - Problem 01:01
22 User Events - Solution 04:09
23 Network Mocking - Problem 12:21
24 Network Mocking - Solution 05:42
25 Element Presence - Problem 01:21
26 Element Presence - Solution 04:14
27 Page Navigation - Problem 01:15
28 Page Navigation - Solution 04:15
29 Recap Of Best Practices 00:27
30 Debugging Tests 00:56
31 DOM Snapshots - Problem 01:26
32 DOM Snapshots - Solution 02:24
33 Debugger - Problem 03:58
34 Debugger - Solution 01:35
35 Breakpoints - Problem 02:00
36 Breakpoints - Solution 04:59
37 Recap Of Debugging 00:38
38 React Component Testing with Vitest Outro 00:40

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