ts-node-test

/* package.json */ { "name": "my-ts-project", "version": "1.0.0", "scripts": { "test": "ts-node-test 'src/**/*.test.ts' 'test/**/*.test.ts'" }, "devDependencies": { "ts-node-test": "^0.4.4", "typescript": "^5.0.0", "@types/node": "^18.7.0" }, "engines": { "node": ">=18.7.0" } } /* test/example.test.ts */ import { test, mock } from 'node:test'; import { equal, ok } from 'node:assert/strict'; const greet = mock.fn((name: string) => `Hello, ${name}!`); test('synchronous passing test', () => { equal(1, 1, 'Numbers should be equal'); }); test('asynchronous passing test', async () => { const promise = Promise.resolve(42); const result = await promise; equal(result, 42, 'Result should be 42'); }); test('test with mocks and assertions', () => { greet('World'); equal(greet.mock.callCount(), 1, 'greet should be called once'); equal(greet.mock.calls[0].arguments[0], 'World', 'Argument should be World'); equal(greet.mock.calls[0].result, 'Hello, World!', 'Return value should be correct'); }); test('test with subtest and tags', { tags: ['core', 'feature'] }, async (t) => { await t.test('subtest 1: addition', () => { ok(2 + 2 === 4, '2 + 2 should be 4'); }); await t.test('subtest 2: skipped example', { skip: true }, () => { // This test will be skipped and not executed equal(true, false, 'This assertion should not run if skipped'); }); }); // To run: // 1. npm init -y // 2. npm i -D ts-node-test typescript @types/node // 3. Create package.json and test/example.test.ts as shown above // 4. npm test