node/test/parallel/test-runner-watch-mode.mjs
Moshe Atlow e9760b4ae8
test_runner: support watch mode
PR-URL: https://github.com/nodejs/node/pull/45214
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
2022-11-21 15:16:23 -05:00

46 lines
1.8 KiB
JavaScript

// Flags: --expose-internals
import '../common/index.mjs';
import { describe, it } from 'node:test';
import { spawn } from 'node:child_process';
import { writeFileSync, readFileSync } from 'node:fs';
import util from 'internal/util';
import * as fixtures from '../common/fixtures.mjs';
async function testWatch({ files, fileToUpdate }) {
const ran1 = util.createDeferredPromise();
const ran2 = util.createDeferredPromise();
const child = spawn(process.execPath, ['--watch', '--test', '--no-warnings', ...files], { encoding: 'utf8' });
let stdout = '';
child.stdout.on('data', (data) => {
stdout += data.toString();
if (/ok 2/.test(stdout)) ran1.resolve();
if (/ok 3/.test(stdout)) ran2.resolve();
});
await ran1.promise;
writeFileSync(fileToUpdate, readFileSync(fileToUpdate, 'utf8'));
await ran2.promise;
child.kill();
}
describe('test runner watch mode', () => {
it('should run tests repeatedly', async () => {
const file1 = fixtures.path('test-runner/index.test.js');
const file2 = fixtures.path('test-runner/subdir/subdir_test.js');
await testWatch({ files: [file1, file2], fileToUpdate: file2 });
});
it('should run tests with dependency repeatedly', async () => {
const file1 = fixtures.path('test-runner/index.test.js');
const dependent = fixtures.path('test-runner/dependent.js');
const dependency = fixtures.path('test-runner/dependency.js');
await testWatch({ files: [file1, dependent], fileToUpdate: dependency });
});
it('should run tests with ESM dependency', async () => {
const file1 = fixtures.path('test-runner/index.test.js');
const dependent = fixtures.path('test-runner/dependent.js');
const dependency = fixtures.path('test-runner/dependency.mjs');
await testWatch({ files: [file1, dependent], fileToUpdate: dependency });
});
});