testcafe
Version:
Automated browser testing for the modern web development stack.
272 lines • 36.5 kB
JavaScript
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const events_1 = require("events");
const pinkie_1 = __importDefault(require("pinkie"));
const mustache_1 = __importDefault(require("mustache"));
const lodash_1 = require("lodash");
const useragent_1 = require("useragent");
const read_file_relative_1 = require("read-file-relative");
const promisify_event_1 = __importDefault(require("promisify-event"));
const nanoid_1 = __importDefault(require("nanoid"));
const command_1 = __importDefault(require("./command"));
const status_1 = __importDefault(require("./status"));
const runtime_1 = require("../../errors/runtime");
const types_1 = require("../../errors/types");
const IDLE_PAGE_TEMPLATE = read_file_relative_1.readSync('../../client/browser/idle-page/index.html.mustache');
const connections = {};
class BrowserConnection extends events_1.EventEmitter {
constructor(gateway, browserInfo, permanent) {
super();
this.HEARTBEAT_TIMEOUT = 2 * 60 * 1000;
this.BROWSER_RESTART_TIMEOUT = 60 * 1000;
this.id = BrowserConnection._generateId();
this.jobQueue = [];
this.initScriptsQueue = [];
this.browserConnectionGateway = gateway;
this.disconnectionPromise = null;
this.testRunAborted = false;
this.browserInfo = browserInfo;
this.browserInfo.userAgent = '';
this.browserInfo.userAgentProviderMetaInfo = '';
this.provider = browserInfo.provider;
this.permanent = permanent;
this.closing = false;
this.closed = false;
this.ready = false;
this.opened = false;
this.idle = true;
this.heartbeatTimeout = null;
this.pendingTestRunUrl = null;
this.url = `${gateway.domain}/browser/connect/${this.id}`;
this.idleUrl = `${gateway.domain}/browser/idle/${this.id}`;
this.forcedIdleUrl = `${gateway.domain}/browser/idle-forced/${this.id}`;
this.initScriptUrl = `${gateway.domain}/browser/init-script/${this.id}`;
this.heartbeatRelativeUrl = `/browser/heartbeat/${this.id}`;
this.statusRelativeUrl = `/browser/status/${this.id}`;
this.statusDoneRelativeUrl = `/browser/status-done/${this.id}`;
this.heartbeatUrl = `${gateway.domain}${this.heartbeatRelativeUrl}`;
this.statusUrl = `${gateway.domain}${this.statusRelativeUrl}`;
this.statusDoneUrl = `${gateway.domain}${this.statusDoneRelativeUrl}`;
this.on('error', () => {
this._forceIdle();
this.close();
});
connections[this.id] = this;
this.browserConnectionGateway.startServingConnection(this);
process.nextTick(() => this._runBrowser());
}
static _generateId() {
return nanoid_1.default(7);
}
async _runBrowser() {
try {
await this.provider.openBrowser(this.id, this.url, this.browserInfo.browserName);
if (!this.ready)
await promisify_event_1.default(this, 'ready');
this.opened = true;
this.emit('opened');
}
catch (err) {
this.emit('error', new runtime_1.GeneralError(types_1.RUNTIME_ERRORS.unableToOpenBrowser, this.browserInfo.providerName + ':' + this.browserInfo.browserName, err.stack));
}
}
async _closeBrowser() {
if (!this.idle)
await promisify_event_1.default(this, 'idle');
try {
await this.provider.closeBrowser(this.id);
}
catch (err) {
// NOTE: A warning would be really nice here, but it can't be done while log is stored in a task.
}
}
_forceIdle() {
if (!this.idle) {
this.switchingToIdle = false;
this.idle = true;
this.emit('idle');
}
}
_createBrowserDisconnectedError() {
return new runtime_1.GeneralError(types_1.RUNTIME_ERRORS.browserDisconnected, this.userAgent);
}
_waitForHeartbeat() {
this.heartbeatTimeout = setTimeout(() => {
const err = this._createBrowserDisconnectedError();
this.opened = false;
this.testRunAborted = true;
this.emit('disconnected', err);
this._restartBrowserOnDisconnect(err);
}, this.HEARTBEAT_TIMEOUT);
}
async _getTestRunUrl(needPopNext) {
if (needPopNext || !this.pendingTestRunUrl)
this.pendingTestRunUrl = await this._popNextTestRunUrl();
return this.pendingTestRunUrl;
}
async _popNextTestRunUrl() {
while (this.hasQueuedJobs && !this.currentJob.hasQueuedTestRuns)
this.jobQueue.shift();
return this.hasQueuedJobs ? await this.currentJob.popNextTestRunUrl(this) : null;
}
static getById(id) {
return connections[id] || null;
}
async _restartBrowser() {
this.ready = false;
this._forceIdle();
let resolveTimeout = null;
let isTimeoutExpired = false;
let timeout = null;
const restartPromise = this._closeBrowser()
.then(() => this._runBrowser());
const timeoutPromise = new pinkie_1.default(resolve => {
resolveTimeout = resolve;
timeout = setTimeout(() => {
isTimeoutExpired = true;
resolve();
}, this.BROWSER_RESTART_TIMEOUT);
});
pinkie_1.default.race([restartPromise, timeoutPromise])
.then(() => {
clearTimeout(timeout);
if (isTimeoutExpired)
this.emit('error', this._createBrowserDisconnectedError());
else
resolveTimeout();
});
}
_restartBrowserOnDisconnect(err) {
let resolveFn = null;
let rejectFn = null;
this.disconnectionPromise = new pinkie_1.default((resolve, reject) => {
resolveFn = resolve;
rejectFn = () => {
reject(err);
};
setTimeout(() => {
rejectFn();
});
})
.then(() => {
return this._restartBrowser();
})
.catch(e => {
this.emit('error', e);
});
this.disconnectionPromise.resolve = resolveFn;
this.disconnectionPromise.reject = rejectFn;
}
async processDisconnection(disconnectionThresholdExceedeed) {
const { resolve, reject } = this.disconnectionPromise;
if (disconnectionThresholdExceedeed)
reject();
else
resolve();
}
addWarning(...args) {
if (this.currentJob)
this.currentJob.warningLog.addWarning(...args);
}
setProviderMetaInfo(str) {
this.browserInfo.userAgentProviderMetaInfo = str;
}
get userAgent() {
let userAgent = this.browserInfo.userAgent;
if (this.browserInfo.userAgentProviderMetaInfo)
userAgent += ` (${this.browserInfo.userAgentProviderMetaInfo})`;
return userAgent;
}
get hasQueuedJobs() {
return !!this.jobQueue.length;
}
get currentJob() {
return this.jobQueue[0];
}
// API
runInitScript(code) {
return new pinkie_1.default(resolve => this.initScriptsQueue.push({ code, resolve }));
}
addJob(job) {
this.jobQueue.push(job);
}
removeJob(job) {
lodash_1.pull(this.jobQueue, job);
}
close() {
if (this.closed || this.closing)
return;
this.closing = true;
this._closeBrowser()
.then(() => {
this.browserConnectionGateway.stopServingConnection(this);
clearTimeout(this.heartbeatTimeout);
delete connections[this.id];
this.ready = false;
this.closed = true;
this.emit('closed');
});
}
establish(userAgent) {
this.ready = true;
const parsedUserAgent = useragent_1.parse(userAgent);
this.browserInfo.userAgent = parsedUserAgent.toString();
this.browserInfo.fullUserAgent = userAgent;
this.browserInfo.parsedUserAgent = parsedUserAgent;
this._waitForHeartbeat();
this.emit('ready');
}
heartbeat() {
clearTimeout(this.heartbeatTimeout);
this._waitForHeartbeat();
return {
code: this.closing ? status_1.default.closing : status_1.default.ok,
url: this.closing ? this.idleUrl : ''
};
}
renderIdlePage() {
return mustache_1.default.render(IDLE_PAGE_TEMPLATE, {
userAgent: this.userAgent,
statusUrl: this.statusUrl,
heartbeatUrl: this.heartbeatUrl,
initScriptUrl: this.initScriptUrl,
retryTestPages: !!this.browserConnectionGateway.retryTestPages
});
}
getInitScript() {
const initScriptPromise = this.initScriptsQueue[0];
return { code: initScriptPromise ? initScriptPromise.code : null };
}
handleInitScriptResult(data) {
const initScriptPromise = this.initScriptsQueue.shift();
if (initScriptPromise)
initScriptPromise.resolve(JSON.parse(data));
}
isHeadlessBrowser() {
return this.provider.isHeadlessBrowser(this.id);
}
async reportJobResult(status, data) {
await this.provider.reportJobResult(this.id, status, data);
}
async getStatus(isTestDone) {
if (!this.idle && !isTestDone) {
this.idle = true;
this.emit('idle');
}
if (this.opened) {
const testRunUrl = await this._getTestRunUrl(isTestDone || this.testRunAborted);
this.testRunAborted = false;
if (testRunUrl) {
this.idle = false;
return { cmd: command_1.default.run, url: testRunUrl };
}
}
return { cmd: command_1.default.idle, url: this.idleUrl };
}
}
exports.default = BrowserConnection;
module.exports = exports.default;
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{ EventEmitter } from 'events';\nimport Promise from 'pinkie';\nimport Mustache from 'mustache';\nimport { pull as remove } from 'lodash';\nimport { parse as parseUserAgent } from 'useragent';\nimport { readSync as read } from 'read-file-relative';\nimport promisifyEvent from 'promisify-event';\nimport nanoid from 'nanoid';\nimport COMMAND from './command';\nimport STATUS from './status';\nimport { GeneralError } from '../../errors/runtime';\nimport { RUNTIME_ERRORS } from '../../errors/types';\n\nconst IDLE_PAGE_TEMPLATE = read('../../client/browser/idle-page/index.html.mustache');\nconst connections        = {};\n\n\nexport default class BrowserConnection extends EventEmitter {\n    constructor (gateway, browserInfo, permanent) {\n        super();\n\n        this.HEARTBEAT_TIMEOUT       = 2 * 60 * 1000;\n        this.BROWSER_RESTART_TIMEOUT = 60 * 1000;\n\n        this.id                       = BrowserConnection._generateId();\n        this.jobQueue                 = [];\n        this.initScriptsQueue         = [];\n        this.browserConnectionGateway = gateway;\n        this.disconnectionPromise     = null;\n        this.testRunAborted           = false;\n\n        this.browserInfo                           = browserInfo;\n        this.browserInfo.userAgent                 = '';\n        this.browserInfo.userAgentProviderMetaInfo = '';\n\n        this.provider = browserInfo.provider;\n\n        this.permanent         = permanent;\n        this.closing           = false;\n        this.closed            = false;\n        this.ready             = false;\n        this.opened            = false;\n        this.idle              = true;\n        this.heartbeatTimeout  = null;\n        this.pendingTestRunUrl = null;\n\n        this.url           = `${gateway.domain}/browser/connect/${this.id}`;\n        this.idleUrl       = `${gateway.domain}/browser/idle/${this.id}`;\n        this.forcedIdleUrl = `${gateway.domain}/browser/idle-forced/${this.id}`;\n        this.initScriptUrl = `${gateway.domain}/browser/init-script/${this.id}`;\n\n        this.heartbeatRelativeUrl  = `/browser/heartbeat/${this.id}`;\n        this.statusRelativeUrl     = `/browser/status/${this.id}`;\n        this.statusDoneRelativeUrl = `/browser/status-done/${this.id}`;\n\n        this.heartbeatUrl  = `${gateway.domain}${this.heartbeatRelativeUrl}`;\n        this.statusUrl     = `${gateway.domain}${this.statusRelativeUrl}`;\n        this.statusDoneUrl = `${gateway.domain}${this.statusDoneRelativeUrl}`;\n\n        this.on('error', () => {\n            this._forceIdle();\n            this.close();\n        });\n\n        connections[this.id] = this;\n\n        this.browserConnectionGateway.startServingConnection(this);\n\n        process.nextTick(() => this._runBrowser());\n    }\n\n    static _generateId () {\n        return nanoid(7);\n    }\n\n    async _runBrowser () {\n        try {\n            await this.provider.openBrowser(this.id, this.url, this.browserInfo.browserName);\n\n            if (!this.ready)\n                await promisifyEvent(this, 'ready');\n\n            this.opened = true;\n            this.emit('opened');\n        }\n        catch (err) {\n            this.emit('error', new GeneralError(\n                RUNTIME_ERRORS.unableToOpenBrowser,\n                this.browserInfo.providerName + ':' + this.browserInfo.browserName,\n                err.stack\n            ));\n        }\n    }\n\n    async _closeBrowser () {\n        if (!this.idle)\n            await promisifyEvent(this, 'idle');\n\n        try {\n            await this.provider.closeBrowser(this.id);\n        }\n        catch (err) {\n            // NOTE: A warning would be really nice here, but it can't be done while log is stored in a task.\n        }\n    }\n\n    _forceIdle () {\n        if (!this.idle) {\n            this.switchingToIdle = false;\n            this.idle            = true;\n            this.emit('idle');\n        }\n    }\n\n    _createBrowserDisconnectedError () {\n        return new GeneralError(RUNTIME_ERRORS.browserDisconnected, this.userAgent);\n    }\n\n    _waitForHeartbeat () {\n        this.heartbeatTimeout = setTimeout(() => {\n            const err = this._createBrowserDisconnectedError();\n\n            this.opened         = false;\n            this.testRunAborted = true;\n\n            this.emit('disconnected', err);\n\n            this._restartBrowserOnDisconnect(err);\n        }, this.HEARTBEAT_TIMEOUT);\n    }\n\n    async _getTestRunUrl (needPopNext) {\n        if (needPopNext || !this.pendingTestRunUrl)\n            this.pendingTestRunUrl = await this._popNextTestRunUrl();\n\n        return this.pendingTestRunUrl;\n    }\n\n    async _popNextTestRunUrl () {\n        while (this.hasQueuedJobs && !this.currentJob.hasQueuedTestRuns)\n            this.jobQueue.shift();\n\n        return this.hasQueuedJobs ? await this.currentJob.popNextTestRunUrl(this) : null;\n    }\n\n    static getById (id) {\n        return connections[id] || null;\n    }\n\n    async _restartBrowser () {\n        this.ready = false;\n\n        this._forceIdle();\n\n        let resolveTimeout   = null;\n        let isTimeoutExpired = false;\n        let timeout          = null;\n\n        const restartPromise = this._closeBrowser()\n            .then(() => this._runBrowser());\n\n        const timeoutPromise = new Promise(resolve => {\n            resolveTimeout = resolve;\n\n            timeout = setTimeout(() => {\n                isTimeoutExpired = true;\n\n                resolve();\n            }, this.BROWSER_RESTART_TIMEOUT);\n        });\n\n        Promise.race([ restartPromise, timeoutPromise ])\n            .then(() => {\n                clearTimeout(timeout);\n\n                if (isTimeoutExpired)\n                    this.emit('error', this._createBrowserDisconnectedError());\n                else\n                    resolveTimeout();\n            });\n    }\n\n    _restartBrowserOnDisconnect (err) {\n        let resolveFn = null;\n        let rejectFn  = null;\n\n        this.disconnectionPromise = new Promise((resolve, reject) => {\n            resolveFn = resolve;\n\n            rejectFn = () => {\n                reject(err);\n            };\n\n            setTimeout(() => {\n                rejectFn();\n            });\n        })\n            .then(() => {\n                return this._restartBrowser();\n            })\n            .catch(e => {\n                this.emit('error', e);\n            });\n\n        this.disconnectionPromise.resolve = resolveFn;\n        this.disconnectionPromise.reject  = rejectFn;\n    }\n\n    async processDisconnection (disconnectionThresholdExceedeed) {\n        const { resolve, reject } = this.disconnectionPromise;\n\n        if (disconnectionThresholdExceedeed)\n            reject();\n        else\n            resolve();\n    }\n\n    addWarning (...args) {\n        if (this.currentJob)\n            this.currentJob.warningLog.addWarning(...args);\n    }\n\n    setProviderMetaInfo (str) {\n        this.browserInfo.userAgentProviderMetaInfo = str;\n    }\n\n    get userAgent () {\n        let userAgent = this.browserInfo.userAgent;\n\n        if (this.browserInfo.userAgentProviderMetaInfo)\n            userAgent += ` (${this.browserInfo.userAgentProviderMetaInfo})`;\n\n        return userAgent;\n    }\n\n    get hasQueuedJobs () {\n        return !!this.jobQueue.length;\n    }\n\n    get currentJob () {\n        return this.jobQueue[0];\n    }\n\n    // API\n    runInitScript (code) {\n        return new Promise(resolve => this.initScriptsQueue.push({ code, resolve }));\n    }\n\n    addJob (job) {\n        this.jobQueue.push(job);\n    }\n\n    removeJob (job) {\n        remove(this.jobQueue, job);\n    }\n\n    close () {\n        if (this.closed || this.closing)\n            return;\n\n        this.closing = true;\n\n        this._closeBrowser()\n            .then(() => {\n                this.browserConnectionGateway.stopServingConnection(this);\n                clearTimeout(this.heartbeatTimeout);\n\n                delete connections[this.id];\n\n                this.ready  = false;\n                this.closed = true;\n\n                this.emit('closed');\n            });\n    }\n\n    establish (userAgent) {\n        this.ready = true;\n\n        const parsedUserAgent = parseUserAgent(userAgent);\n\n        this.browserInfo.userAgent       = parsedUserAgent.toString();\n        this.browserInfo.fullUserAgent   = userAgent;\n        this.browserInfo.parsedUserAgent = parsedUserAgent;\n\n        this._waitForHeartbeat();\n        this.emit('ready');\n    }\n\n    heartbeat () {\n        clearTimeout(this.heartbeatTimeout);\n        this._waitForHeartbeat();\n\n        return {\n            code: this.closing ? STATUS.closing : STATUS.ok,\n            url:  this.closing ? this.idleUrl : ''\n        };\n    }\n\n    renderIdlePage () {\n        return Mustache.render(IDLE_PAGE_TEMPLATE, {\n            userAgent:      this.userAgent,\n            statusUrl:      this.statusUrl,\n            heartbeatUrl:   this.heartbeatUrl,\n            initScriptUrl:  this.initScriptUrl,\n            retryTestPages: !!this.browserConnectionGateway.retryTestPages\n        });\n    }\n\n    getInitScript () {\n        const initScriptPromise = this.initScriptsQueue[0];\n\n        return { code: initScriptPromise ? initScriptPromise.code : null };\n    }\n\n    handleInitScriptResult (data) {\n        const initScriptPromise = this.initScriptsQueue.shift();\n\n        if (initScriptPromise)\n            initScriptPromise.resolve(JSON.parse(data));\n    }\n\n    isHeadlessBrowser () {\n        return this.provider.isHeadlessBrowser(this.id);\n    }\n\n    async reportJobResult (status, data) {\n        await this.provider.reportJobResult(this.id, status, data);\n    }\n\n    async getStatus (isTestDone) {\n        if (!this.idle && !isTestDone) {\n            this.idle = true;\n            this.emit('idle');\n        }\n\n        if (this.opened) {\n            const testRunUrl = await this._getTestRunUrl(isTestDone || this.testRunAborted);\n\n            this.testRunAborted = false;\n\n            if (testRunUrl) {\n                this.idle = false;\n                return { cmd: COMMAND.run, url: testRunUrl };\n            }\n        }\n\n        return { cmd: COMMAND.idle, url: this.idleUrl };\n    }\n}\n"]}