beater-cli/lib/beater.js

A command-line interface for beater

"use strict";

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var childProcess = require('child_process');
var events_1 = require('events');
var os_1 = require('os');
var promise_1 = require('./globals/promise');

var Beater = function (_events_1$EventEmitte) {
    _inherits(Beater, _events_1$EventEmitte);

    function Beater(options) {
        _classCallCheck(this, Beater);

        var _this = _possibleConstructorReturn(this, Object.getPrototypeOf(Beater).call(this));

        _this.reporter = options.reporter;
        _this.files = options.files;
        _this.pendingFiles = _this.files.slice();
        _this.finishedFiles = [];
        _this.procs = options.procs || os_1.cpus().length;
        _this.requires = options.requires || [];
        _this.fileResults = {};
        _this.on('next', _this.nextFile.bind(_this));
        return _this;
    }

    _createClass(Beater, [{
        key: 'start',
        value: function start() {
            var _this2 = this;

            return new promise_1.Promise(function (resolve, reject) {
                _this2.once('finish', function (hasError) {
                    (hasError ? reject : resolve)();
                });
                _this2.reporter.started();
                _this2.pendingFiles.splice(0, _this2.procs).forEach(function (file) {
                    return _this2.emit('next', file);
                });
            });
        }
    }, {
        key: 'nextFile',
        value: function nextFile(file) {
            var _this3 = this;

            this.fileResults[file] = [];
            var args = this.requires.reduce(function (requires, require) {
                return requires.concat(['--require', require]);
            }, []);
            var cp = childProcess.fork(file, [], { execArgv: args });
            cp.on('message', function (m) {
                if (m.type === 'report-test-started') {
                    _this3.reporter.testStarted(m.test);
                } else if (m.type === 'report-test-finished') {
                    _this3.fileResults[file].push(m.result);
                    _this3.reporter.testFinished(m.result);
                } else if (m.type === 'error') {}
            });
            cp.on('close', function () {
                _this3.finishedFiles.push(file);
                if (_this3.pendingFiles.length > 0) {
                    _this3.emit('next', _this3.pendingFiles.shift());
                } else if (_this3.finishedFiles.length === _this3.files.length) {
                    _this3.reporter.finished(Object.keys(_this3.fileResults).reduce(function (results, file) {
                        return results.concat(_this3.fileResults[file]);
                    }, []));
                    var hasError = Object.keys(_this3.fileResults).some(function (file) {
                        return _this3.fileResults[file].some(function (result) {
                            return !!result.error;
                        });
                    });
                    _this3.emit('finish', hasError);
                } else {}
            });
        }
    }]);

    return Beater;
}(events_1.EventEmitter);

exports.Beater = Beater;