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React Component Testing with Vitest

1h 38m 34s
English
Paid

Course description

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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#1: Introduction to React Component Testing with Vitest Browser Mode

All Course Lessons (38)

#Lesson TitleDurationAccess
1
Introduction to React Component Testing with Vitest Browser Mode Demo
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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