gulp-spawn/tests/buffers.js

spawn plugin for gulp

import Stream from 'node:stream';
import assert from 'node:assert';
import {Buffer} from 'node:buffer';
import Vinyl from 'vinyl';
import gSpawn from '../index.js';

describe('gulp-spawn', () => {
	describe('in buffer mode', () => {
		it('should work', done => {
			const stream = gSpawn({
				cmd: 'cat',
			});

			const inputStream = new Stream.PassThrough({objectMode: true});
			const outputStream = new Stream.PassThrough({objectMode: true});
			let n = 0;

			const fakeFile = new Vinyl({
				cwd: './',
				base: 'test',
				path: 'test/file.js',
				contents: Buffer.from('plipplap'),
			});
			const fakeFile2 = new Vinyl({
				cwd: './',
				base: 'test',
				path: 'test/file2.js',
				contents: Buffer.from('plipplup'),
			});

			inputStream.pipe(stream).pipe(outputStream);

			outputStream.on('readable', () => {
				let newFile;
				while ((newFile = outputStream.read())) {
					assert(newFile);
					assert.equal(newFile.cwd, './');
					assert.equal(newFile.base, 'test');
					assert(newFile.contents instanceof Buffer);
					if (++n === 1) {
						assert.equal(newFile.path, 'test/file.js');
						assert.equal(newFile.contents.toString(), 'plipplap');
					} else {
						assert.equal(newFile.path, 'test/file2.js');
						assert.equal(newFile.contents.toString(), 'plipplup');
					}
				}
			});

			outputStream.on('end', () => {
				assert.equal(n, 2);
				done();
			});

			inputStream.write(fakeFile);
			inputStream.write(fakeFile2);
			inputStream.end();
		});
	});
});