jest-electron/lib/runner.js

Easiest way to run jest unit test cases in electron.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (_) try {
            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
                default:
                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                    if (t[2]) _.ops.pop();
                    _.trys.pop(); continue;
            }
            op = body.call(thisArg, _);
        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
Object.defineProperty(exports, "__esModule", { value: true });
var throat_1 = require("throat");
var proc_1 = require("./electron/proc");
var isDebugMode = function () {
    return process.env.DEBUG_MODE === '1';
};
/**
 * Runner class
 */
var ElectronRunner = /** @class */ (function () {
    function ElectronRunner(globalConfig) {
        this._globalConfig = globalConfig;
        this._debugMode = isDebugMode();
    }
    ElectronRunner.prototype.getConcurrency = function (testSize) {
        var _a = this._globalConfig, maxWorkers = _a.maxWorkers, watch = _a.watch, watchAll = _a.watchAll;
        var isWatch = watch || watchAll;
        var concurrency = Math.min(testSize, maxWorkers);
        return isWatch ? Math.ceil(concurrency / 2) : concurrency;
    };
    ElectronRunner.prototype.runTests = function (tests, watcher, onStart, onResult, onFailure) {
        return __awaiter(this, void 0, void 0, function () {
            var concurrency;
            var _this = this;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        concurrency = this.getConcurrency(tests.length);
                        proc_1.electronProc.debugMode = this._debugMode;
                        proc_1.electronProc.concurrency = concurrency;
                        // when the process exit, kill then electron
                        process.on('exit', function () {
                            proc_1.electronProc.kill();
                        });
                        if (this._debugMode) {
                            proc_1.electronProc.onClose(function () { process.exit(); });
                        }
                        return [4 /*yield*/, proc_1.electronProc.initialWin()];
                    case 1:
                        _a.sent();
                        return [4 /*yield*/, Promise.all(tests.map(throat_1.default(concurrency, function (test, idx) { return __awaiter(_this, void 0, void 0, function () {
                                var config, globalConfig;
                                return __generator(this, function (_a) {
                                    switch (_a.label) {
                                        case 0:
                                            onStart(test);
                                            config = test.context.config;
                                            globalConfig = this._globalConfig;
                                            return [4 /*yield*/, proc_1.electronProc.runTest({
                                                    serializableModuleMap: test.context.moduleMap.toJSON(),
                                                    config: config,
                                                    globalConfig: globalConfig,
                                                    path: test.path,
                                                }).then(function (testResult) {
                                                    testResult.failureMessage != null
                                                        ? onFailure(test, testResult.failureMessage)
                                                        : onResult(test, testResult);
                                                }).catch(function (error) {
                                                    return onFailure(test, error);
                                                })];
                                        case 1: return [2 /*return*/, _a.sent()];
                                    }
                                });
                            }); })))];
                    case 2:
                        _a.sent();
                        // not debug mode, then kill electron after running test cases
                        if (!this._debugMode) {
                            proc_1.electronProc.kill();
                        }
                        return [2 /*return*/];
                }
            });
        });
    };
    return ElectronRunner;
}());
exports.default = ElectronRunner;