Ed Cottrell Ed Cottrell - 6 months ago 132
Node.js Question

ChromeOptions causes reference error using Selenium ChromeDriver for node.js

I am trying to use the ChromeDriver driver for Selenium to run some tests using Chrome, but I'm getting a reference error when I use

ChromeOptions
.

My Code



I want to force the use of certain options, such as testing it against a particular user profile. Based on the Selenium and ChromeDriver documentation, this is my file
test.js
:

opt = new chromeOptions(); // ERROR OCCURS HERE!
opt.setBinary("C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe");
opt.addArguments("--user-data-dir=C:\\Users\\MyUserAccount\\AppData\\Local\\Google\\Chrome\\User Data");
driver = new ChromeDriver(opt);

// rest of my script goes here


The error



I am executing this using the command
node test.js
. This throws the following error on the first line:

\path\to\test.js:1

ction (exports, require, module, __filename, __dirname) { opt = new chromeOpti
^
ReferenceError: chromeOptions is not defined
at Object.<anonymous> (\path\to\test.js:1:73)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:902:3


For what it's worth, if I skip setting options and replace the first four lines of the script with this, it works, but I can't set the options I need to set:

var webdriver = require('selenium-webdriver');
var driver = new webdriver.Builder().
withCapabilities(webdriver.Capabilities.chrome()).
build();


I'm sure that I'm missing something really basic, but I can't figure this one out. How can I set options for Chrome using Selenium and node.js?

Edited to remove some obviously invalid syntax from the samples in some of the documentation I found.

Answer

The following works for me:

var webdriver = require("selenium-webdriver");
var chrome = require("selenium-webdriver/chrome");

// Make sure the PATH is set to find ChromeDriver. I'm on a Unix
// system. You'll need to adapt to whatever is needed for
// Windows. Actually, since you say that you can get a browser to show
// up if you don't try to specify options, your ChromeDriver is
// probably already on your PATH, so you can probably skip this.
process.env["PATH"] += ":/home/user/src/selenium/";

var options = new chrome.Options();

// Commented out because they are obviously not what you want.
// Uncomment and adapt as needed:
//
// options.setChromeBinaryPath("/tmp/foo");
// options.addArguments(["--blah"]);

var driver = new webdriver.Builder().
   withCapabilities(options.toCapabilities()).build();

driver.get("http://www.google.com")

I've tested the code above with various values and found that it works.

If you want to see what else you can do with the Options object, you can open node_modules/selenium_webdriver/chrome.js and read the source. This is how I figured out the above method.

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