Assert module for assertions in Node.js - Mini Project: Build & Apply

Using the Assert Module for Assertions in Node.js

📖 Scenario: You are writing a simple Node.js script to check if your functions work correctly. You will use the built-in assert module to test values and conditions.

🎯 Goal: Build a Node.js script that uses the assert module to verify values and conditions step-by-step.

📋 What You'll Learn

Import the assert module

Create variables with specific values

Use assert.strictEqual() to check exact equality

Use assert.ok() to check truthy conditions

💡 Why This Matters

🌍 Real World

Developers use the assert module to write simple tests that check if their code works as expected before releasing it.

💼 Career

Knowing how to write assertions helps you test your code and catch bugs early, a key skill for software developers.

1

Import the assert module

Write a line to import the built-in Node.js assert module using require and assign it to a variable called assert.

Node.js

// Your code here

Need a hint?

Use const assert = require('assert'); to import the module.

2

Create variables to test

Create two variables: actual with the value 10 and expected with the value 10.

Node.js

const assert = require('assert');
// Your code here

Need a hint?

Use const actual = 10; and const expected = 10;.

3

Use assert.strictEqual to check equality

Write a line using assert.strictEqual() to check that actual is strictly equal to expected.

Node.js

const assert = require('assert');
const actual = 10;
const expected = 10;
// Your code here

Need a hint?

Use assert.strictEqual(actual, expected); to check exact equality.

4

Use assert.ok to check a truthy condition

Create a variable isValid with the value true. Then write a line using assert.ok() to check that isValid is truthy.

Node.js

const assert = require('assert');
const actual = 10;
const expected = 10;
assert.strictEqual(actual, expected);
// Your code here

Need a hint?

Use const isValid = true; and assert.ok(isValid); to check truthiness.