Write Your First Test in JavaScript
Testing helps catch errors early and keeps your code working when you add new features. In this video, you'll write your first simple test by comparing actual and expected results using plain JavaScript.
You'll see how to use if statements and throw errors to verify that functions like add and subtract return the correct values. This hands-on approach will help you understand what a test is and why testing is useful before moving on to test frameworks.
Timeline
0:00 Why we need testing
0:49 Preventing old code from breaking
1:35 Comparing actual and expected results
2:20 Writing our first test
3:06 Testing the subtract function
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