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JavaScript Testing with Vitest Cheat Sheet

A 2-page reference for writing tests with Vitest: 14 short entries with copy-ready code.

ForDevelopers

javascript-testing-with-vitest-cheat-sheet.pdfShowing 18 of 72 lines
// A first test
import { describe, it, expect } from "vitest";

describe("add", () => {
  it("adds numbers", () => {
    expect(1 + 2).toBe(3);
  });
});

// Common matchers
expect(value).toBe(3);
expect(obj).toEqual({ a: 1 });
expect(list).toContain("x");
expect(flag).toBeTruthy();

// Numbers and strings
expect(0.1 + 0.2).toBeCloseTo(0.3);
expect("hello").toMatch(/ell/);

What's inside

Format
PDF, Markdown
Contents
14 sections · 2 pages
Version
1.0 · Updated 3 Oct 2026
Licence
Commercial What this means
Checked
Checked before it ships
  • javascript-testing-with-vitest-cheat-sheet.pdfPDF · 20 KB
  • javascript-testing-with-vitest-cheat-sheet.mdMarkdown · 2 KB
  • LICENSE.txtadded to every download

About this item

A compact, printable reference for writing tests with Vitest. Each of the 14 entries has a one-line explanation and a small example you can paste into your editor. The PDF uses a two-column A4 layout designed to sit next to your keyboard, and the same content ships as Markdown so you can search it or drop it into your notes. Every JavaScript example targets Vitest 3.

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