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Mini Shell
Mini Shell
// Flags: --expose-internals
import * as common from '../common/index.mjs';
import { describe, it } from 'node:test';
import { spawn } from 'node:child_process';
import { writeFileSync } from 'node:fs';
import util from 'internal/util';
import tmpdir from '../common/tmpdir.js';
if (common.isIBMi)
common.skip('IBMi does not support `fs.watch()`');
tmpdir.refresh();
// This test updates these files repeatedly,
// Reading them from disk is unreliable due to race conditions.
const fixtureContent = {
'dependency.js': 'module.exports = {};',
'dependency.mjs': 'export const a = 1;',
'test.js': `
const test = require('node:test');
require('./dependency.js');
import('./dependency.mjs');
import('data:text/javascript,');
test('test has ran');`,
};
const fixturePaths = Object.keys(fixtureContent)
.reduce((acc, file) => ({ ...acc, [file]: tmpdir.resolve(file) }), {});
Object.entries(fixtureContent)
.forEach(([file, content]) => writeFileSync(fixturePaths[file], content));
async function testWatch({ fileToUpdate, file }) {
const ran1 = util.createDeferredPromise();
const ran2 = util.createDeferredPromise();
const child = spawn(process.execPath,
['--watch', '--test', file ? fixturePaths[file] : undefined].filter(Boolean),
{ encoding: 'utf8', stdio: 'pipe', cwd: tmpdir.path });
let stdout = '';
child.stdout.on('data', (data) => {
stdout += data.toString();
const testRuns = stdout.match(/ - test has ran/g);
if (testRuns?.length >= 1) ran1.resolve();
if (testRuns?.length >= 2) ran2.resolve();
});
await ran1.promise;
const content = fixtureContent[fileToUpdate];
const path = fixturePaths[fileToUpdate];
const interval = setInterval(() => writeFileSync(path, content), common.platformTimeout(1000));
await ran2.promise;
clearInterval(interval);
child.kill();
}
describe('test runner watch mode', () => {
it('should run tests repeatedly', async () => {
await testWatch({ file: 'test.js', fileToUpdate: 'test.js' });
});
it('should run tests with dependency repeatedly', async () => {
await testWatch({ file: 'test.js', fileToUpdate: 'dependency.js' });
});
it('should run tests with ESM dependency', async () => {
await testWatch({ file: 'test.js', fileToUpdate: 'dependency.mjs' });
});
it('should support running tests without a file', async () => {
await testWatch({ fileToUpdate: 'test.js' });
});
});
Zerion Mini Shell 1.0