Async Testing Basics
Asynchronous code is a fundamental part of JavaScript, allowing you to perform operations like fetching data from a server, reading files, or waiting for timers without blocking the rest of your program. In JavaScript, asynchronous behavior is commonly handled using callbacks, promises, or the modern async/await syntax. Unlike synchronous code, where you get results right away, asynchronous functions might take some time to complete, so their results are not available immediately. This timing difference means you need special techniques to test asynchronous code properly: your tests must wait for the async operations to finish before making assertions, or you could end up with false positives or negatives.
test.js
1. What is a common reason for needing special handling when testing asynchronous code?
2. Which Jest feature helps you test functions that return promises or use async/await?
Bedankt voor je feedback!
Vraag AI
Vraag AI
Vraag wat u wilt of probeer een van de voorgestelde vragen om onze chat te starten.
Can you explain the differences between callbacks, promises, and async/await?
How do I write a test for asynchronous code in JavaScript?
What are some common mistakes when testing asynchronous code?
Awesome!
Completion rate improved to 7.14Async Testing Basics
Veeg om het menu te tonen
Asynchronous code is a fundamental part of JavaScript, allowing you to perform operations like fetching data from a server, reading files, or waiting for timers without blocking the rest of your program. In JavaScript, asynchronous behavior is commonly handled using callbacks, promises, or the modern async/await syntax. Unlike synchronous code, where you get results right away, asynchronous functions might take some time to complete, so their results are not available immediately. This timing difference means you need special techniques to test asynchronous code properly: your tests must wait for the async operations to finish before making assertions, or you could end up with false positives or negatives.
test.js
1. What is a common reason for needing special handling when testing asynchronous code?
2. Which Jest feature helps you test functions that return promises or use async/await?
Bedankt voor je feedback!
