Yashotantra Academy logo
← Node.js theorytheory 0/50 · 0%
level 1
Curious · 0 XP
streak
0d
perfect
0
badges
0

100 XP to Apprentice

Testing · medium

22. Testing with node:test

Node's built-in test runner — no extra dependency required.

1 min read3 questionsup to 50 XPtopic 22/50

Read in another language

AI translates the explanation and quiz text while preserving code and answer scoring.

Since Node 18+, `node:test` provides a built-in test runner with `test()`, `describe()`/`it()`, and an `assert` module, runnable via `node --test`.

js
import { test } from "node:test";
import assert from "node:assert/strict";

function add(a, b) { return a + b; }

test("add sums two numbers", () => {
  assert.equal(add(2, 3), 5);
});

test("add handles negatives", () => {
  assert.equal(add(-1, 1), 0);
});

Running `node --test` auto-discovers files matching common test naming patterns (`*.test.js`) and reports pass/fail with a TAP-compatible summary — useful for small projects that want tests without adding Jest or Vitest as a dependency.

How to study this topic

  1. 1. Read the explanation once end to end, skipping the code.
  2. 2. Re-read the code snippets and say out loud what each line does.
  3. 3. Answer the quiz without scrolling back — that is the real check.
  4. 4. Read every explanation, even for the answers you got right.

Scoring

  • · Up to 30 XP from quiz accuracy.
  • · +15 XP for a perfect first attempt.
  • · +5 XP while a 3-day streak is running.
  • · 75% or higher marks the topic complete.

Check your understanding

  1. 1. What command runs Node's built-in tests?

  2. 2. Which module provides assertion helpers alongside node:test?

  3. 3. What is an advantage of node:test over adding Jest?

Badges

First light
Pass your first topic
Sharp shooter
3 perfect first-try quizzes
On a roll
Study 3 days in a row
Week warrior
Study 7 days in a row
Grinder
Earn 500 XP
Deep diver
Earn 1500 XP