@browserstack/testcafe
Version:
Automated browser testing for the modern web development stack.
164 lines • 24.5 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 net_1 = require("net");
const promisify_event_1 = __importDefault(require("promisify-event"));
const events_1 = __importDefault(require("events"));
const delay_1 = __importDefault(require("../../../../../../utils/delay"));
const client_functions_1 = require("../../../../utils/client-functions");
const commands_1 = __importDefault(require("./commands"));
const CONNECTION_TIMEOUT = 30000;
const CONNECTION_RETRY_DELAY = 300;
const MAX_RESIZE_RETRY_COUNT = 2;
const HEADER_SEPARATOR = ':';
module.exports = class MarionetteClient {
constructor(port = 2828, host = '127.0.0.1') {
this.currentPacketNumber = 1;
this.events = new events_1.default();
this.port = port;
this.host = host;
this.socket = new net_1.Socket();
this.buffer = Buffer.alloc(0);
this.getPacketPromise = Promise.resolve();
this.sendPacketPromise = Promise.resolve();
this.protocolInfo = {
applicationType: '',
marionetteProtocol: '',
};
this.sessionInfo = null;
}
async _attemptToConnect(port, host) {
this.socket.connect(port, host);
const connectionPromise = Promise.race([
promisify_event_1.default(this.socket, 'connect'),
promisify_event_1.default(this.socket, 'error')
]);
return await connectionPromise
.then(() => true)
.catch(() => {
this.socket.removeAllListeners('connect');
return delay_1.default(CONNECTION_RETRY_DELAY);
});
}
async _connectSocket(port, host) {
const connectionStartTime = Date.now();
let connected = await this._attemptToConnect(port, host);
while (!connected && Date.now() - connectionStartTime < CONNECTION_TIMEOUT)
connected = await this._attemptToConnect(port, host);
if (!connected)
throw new Error('Unable to connect');
this.socket.on('data', data => this._handleNewData(data));
}
async _writeSocket(message) {
if (!this.socket.write(message))
await promisify_event_1.default(this.socket, 'drain');
}
_handleNewData(data) {
if (!data)
return;
this.buffer = Buffer.concat([this.buffer, data]);
this.events.emit('new-data');
}
_getPacket() {
this.getPacketPromise = this.getPacketPromise.then(async () => {
let headerEndIndex = this.buffer.indexOf(HEADER_SEPARATOR);
while (headerEndIndex < 0) {
await promisify_event_1.default(this.events, 'new-data');
headerEndIndex = this.buffer.indexOf(HEADER_SEPARATOR);
}
const packet = {
length: NaN,
body: null
};
packet.length = parseInt(this.buffer.toString('utf8', 0, headerEndIndex), 10) || 0;
const bodyStartIndex = headerEndIndex + HEADER_SEPARATOR.length;
const bodyEndIndex = bodyStartIndex + packet.length;
if (packet.length) {
while (this.buffer.length < bodyEndIndex)
await promisify_event_1.default(this.events, 'new-data');
packet.body = JSON.parse(this.buffer.toString('utf8', bodyStartIndex, bodyEndIndex));
}
this.buffer = this.buffer.slice(bodyEndIndex);
return packet;
});
return this.getPacketPromise;
}
_sendPacket(payload) {
this.sendPacketPromise = this.sendPacketPromise.then(async () => {
const body = [0, this.currentPacketNumber++, payload.command, payload.parameters];
const serialized = JSON.stringify(body);
const message = Buffer.byteLength(serialized, 'utf8') + HEADER_SEPARATOR + serialized;
this._writeSocket(message);
});
return this.sendPacketPromise;
}
_throwMarionetteError(error) {
throw new Error(`${error.error}${error.message ? ': ' + error.message : ''}`);
}
async _getResponse(packet) {
const packetNumber = this.currentPacketNumber;
await this._sendPacket(packet);
let responsePacket = await this._getPacket();
while (!responsePacket.body || responsePacket.body[1] !== packetNumber)
responsePacket = await this._getPacket();
if (responsePacket.body[2])
this._throwMarionetteError(responsePacket.body[2]);
return responsePacket.body[3];
}
async _getScreenshotRawData(fullPage = false) {
return await this._getResponse({
command: commands_1.default.takeScreenshot,
parameters: {
full: fullPage,
hash: false,
scroll: false
}
});
}
async connect() {
await this._connectSocket(this.port, this.host);
const infoPacket = await this._getPacket();
this.protocolInfo = {
applicationType: infoPacket.body.applicationType,
marionetteProtocol: infoPacket.body.marionetteProtocol
};
this.sessionInfo = await this._getResponse({ command: commands_1.default.newSession });
}
dispose() {
this.socket.end();
this.buffer = null;
}
async executeScript(code) {
return await this._getResponse({
command: commands_1.default.executeScript,
parameters: { script: `return (${code})()` }
});
}
async getScreenshotData(_, fullPage) {
const frameData = await this._getScreenshotRawData(fullPage);
return Buffer.from(frameData.value, 'base64');
}
async setWindowSize(width, height) {
let { value: pageRect } = await this.executeScript(client_functions_1.GET_WINDOW_DIMENSIONS_INFO_SCRIPT);
let attemptCounter = 0;
while (attemptCounter++ < MAX_RESIZE_RETRY_COUNT && (pageRect.width !== width || pageRect.height !== height)) {
const currentRect = await this._getResponse({ command: commands_1.default.getWindowRect });
await this._getResponse({
command: commands_1.default.setWindowRect,
parameters: {
x: currentRect.x,
y: currentRect.y,
width: width + (currentRect.width - pageRect.width),
height: height + (currentRect.height - pageRect.height)
}
});
({ value: pageRect } = await this.executeScript(client_functions_1.GET_WINDOW_DIMENSIONS_INFO_SCRIPT));
}
}
async quit() {
await this._getResponse({ command: commands_1.default.quit });
}
};
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{ Socket } from 'net';\nimport promisifyEvent from 'promisify-event';\nimport EventEmitter from 'events';\nimport delay from '../../../../../../utils/delay';\nimport { GET_WINDOW_DIMENSIONS_INFO_SCRIPT } from '../../../../utils/client-functions';\nimport COMMANDS from './commands';\n\n\nconst CONNECTION_TIMEOUT     = 30000;\nconst CONNECTION_RETRY_DELAY = 300;\nconst MAX_RESIZE_RETRY_COUNT = 2;\nconst HEADER_SEPARATOR       = ':';\n\nmodule.exports = class MarionetteClient {\n    constructor (port = 2828, host = '127.0.0.1') {\n        this.currentPacketNumber = 1;\n        this.events              = new EventEmitter();\n        this.port                = port;\n        this.host                = host;\n        this.socket              = new Socket();\n        this.buffer              = Buffer.alloc(0);\n        this.getPacketPromise    = Promise.resolve();\n        this.sendPacketPromise   = Promise.resolve();\n\n        this.protocolInfo = {\n            applicationType:    '',\n            marionetteProtocol: '',\n        };\n\n        this.sessionInfo = null;\n    }\n\n    async _attemptToConnect (port, host) {\n        this.socket.connect(port, host);\n\n        const connectionPromise = Promise.race([\n            promisifyEvent(this.socket, 'connect'),\n            promisifyEvent(this.socket, 'error')\n        ]);\n\n        return await connectionPromise\n            .then(() => true)\n            .catch(() => {\n                this.socket.removeAllListeners('connect');\n                return delay(CONNECTION_RETRY_DELAY);\n            });\n    }\n\n    async _connectSocket (port, host) {\n        const connectionStartTime = Date.now();\n\n        let connected = await this._attemptToConnect(port, host);\n\n        while (!connected && Date.now() - connectionStartTime < CONNECTION_TIMEOUT)\n            connected = await this._attemptToConnect(port, host);\n\n        if (!connected)\n            throw new Error('Unable to connect');\n\n        this.socket.on('data', data => this._handleNewData(data));\n    }\n\n    async _writeSocket (message) {\n        if (!this.socket.write(message))\n            await promisifyEvent(this.socket, 'drain');\n    }\n\n    _handleNewData (data) {\n        if (!data)\n            return;\n\n        this.buffer = Buffer.concat([this.buffer, data]);\n\n        this.events.emit('new-data');\n    }\n\n    _getPacket () {\n        this.getPacketPromise = this.getPacketPromise.then(async () => {\n            let headerEndIndex = this.buffer.indexOf(HEADER_SEPARATOR);\n\n            while (headerEndIndex < 0) {\n                await promisifyEvent(this.events, 'new-data');\n\n                headerEndIndex = this.buffer.indexOf(HEADER_SEPARATOR);\n            }\n\n            const packet = {\n                length: NaN,\n                body:   null\n            };\n\n            packet.length = parseInt(this.buffer.toString('utf8', 0, headerEndIndex), 10) || 0;\n\n            const bodyStartIndex = headerEndIndex + HEADER_SEPARATOR.length;\n            const bodyEndIndex   = bodyStartIndex + packet.length;\n\n            if (packet.length) {\n                while (this.buffer.length < bodyEndIndex)\n                    await promisifyEvent(this.events, 'new-data');\n\n                packet.body = JSON.parse(this.buffer.toString('utf8', bodyStartIndex, bodyEndIndex));\n            }\n\n            this.buffer = this.buffer.slice(bodyEndIndex);\n\n            return packet;\n        });\n\n        return this.getPacketPromise;\n    }\n\n    _sendPacket (payload) {\n        this.sendPacketPromise = this.sendPacketPromise.then(async () => {\n            const body       = [0, this.currentPacketNumber++, payload.command, payload.parameters];\n            const serialized = JSON.stringify(body);\n            const message    = Buffer.byteLength(serialized, 'utf8') + HEADER_SEPARATOR + serialized;\n\n            this._writeSocket(message);\n        });\n\n        return this.sendPacketPromise;\n    }\n\n    _throwMarionetteError (error) {\n        throw new Error(`${error.error}${error.message ? ': ' + error.message : ''}`);\n    }\n\n    async _getResponse (packet) {\n        const packetNumber = this.currentPacketNumber;\n\n        await this._sendPacket(packet);\n\n        let responsePacket = await this._getPacket();\n\n        while (!responsePacket.body || responsePacket.body[1] !== packetNumber)\n            responsePacket = await this._getPacket();\n\n        if (responsePacket.body[2])\n            this._throwMarionetteError(responsePacket.body[2]);\n\n        return responsePacket.body[3];\n    }\n\n    async _getScreenshotRawData (fullPage = false) {\n        return await this._getResponse({\n            command:    COMMANDS.takeScreenshot,\n            parameters: {\n                full:   fullPage,\n                hash:   false,\n                scroll: false\n            }\n        });\n    }\n\n    async connect () {\n        await this._connectSocket(this.port, this.host);\n\n        const infoPacket = await this._getPacket();\n\n        this.protocolInfo = {\n            applicationType:    infoPacket.body.applicationType,\n            marionetteProtocol: infoPacket.body.marionetteProtocol\n        };\n\n        this.sessionInfo = await this._getResponse({ command: COMMANDS.newSession });\n    }\n\n    dispose () {\n        this.socket.end();\n        this.buffer = null;\n    }\n\n    async executeScript (code) {\n        return await this._getResponse({\n            command:    COMMANDS.executeScript,\n            parameters: { script: `return (${code})()` }\n        });\n    }\n\n    async getScreenshotData (_, fullPage) {\n        const frameData = await this._getScreenshotRawData(fullPage);\n\n        return Buffer.from(frameData.value, 'base64');\n    }\n\n    async setWindowSize (width, height) {\n        let { value: pageRect } = await this.executeScript(GET_WINDOW_DIMENSIONS_INFO_SCRIPT);\n        let attemptCounter      = 0;\n\n        while (attemptCounter++ < MAX_RESIZE_RETRY_COUNT && (pageRect.width !== width || pageRect.height !== height)) {\n            const currentRect = await this._getResponse({ command: COMMANDS.getWindowRect });\n\n            await this._getResponse({\n                command: COMMANDS.setWindowRect,\n\n                parameters: {\n                    x:      currentRect.x,\n                    y:      currentRect.y,\n                    width:  width + (currentRect.width - pageRect.width),\n                    height: height + (currentRect.height - pageRect.height)\n                }\n            });\n\n            ({ value: pageRect } = await this.executeScript(GET_WINDOW_DIMENSIONS_INFO_SCRIPT));\n        }\n    }\n\n    async quit () {\n        await this._getResponse({ command: COMMANDS.quit });\n    }\n};\n\n"]}