concurrently-with-grid/src/flow-control/log-output.spec.js

Run commands concurrently

const { createMockInstance } = require('jest-create-mock-instance');
const Logger = require('../logger');
const LogOutput = require('./log-output');
const createFakeCommand = require('./fixtures/fake-command');

let controller, logger, commands;
beforeEach(() => {
    commands = [
        createFakeCommand(),
        createFakeCommand(),
    ];

    logger = createMockInstance(Logger);
    controller = new LogOutput({ logger, grid: false });
});

it('returns same commands', () => {
    expect(controller.handle(commands)).toBe(commands);
});

it('logs the stdout of each command', () => {
    controller.handle(commands);

    commands[0].stdout.next(Buffer.from('foo'));
    commands[1].stdout.next(Buffer.from('bar'));

    expect(logger.logCommandText).toHaveBeenCalledTimes(2);
    expect(logger.logCommandText).toHaveBeenCalledWith('foo', commands[0]);
    expect(logger.logCommandText).toHaveBeenCalledWith('bar', commands[1]);
});

it('logs the stderr of each command', () => {
    controller.handle(commands);

    commands[0].stderr.next(Buffer.from('foo'));
    commands[1].stderr.next(Buffer.from('bar'));

    expect(logger.logCommandText).toHaveBeenCalledTimes(2);
    expect(logger.logCommandText).toHaveBeenCalledWith('foo', commands[0]);
    expect(logger.logCommandText).toHaveBeenCalledWith('bar', commands[1]);
});