how to pass deviceName in conf.js through command line before starting webdriver instance

Question

Currently I'm trying emulate chrome browser on mobile devices (eg Apple iPad\\Samsung Galaxy). It works fine when hardcoded deviceName are passed in conf.js.

But I want to change devices on fly. I've tried passing deivceName parameter in command line but with no luck. It didn't update value in conf.js but after webdriver instance is started I see updated param values:

protractor mobiledevice.js --params.device="Apple iPhone 5"

-

"use strict";

var config = require('./conf.js').config;

config.params = {
    device: 'Google Nexus 6'
}


config.capabilities = {
    'chromeOptions': {
        'mobileEmulation': {
            'deviceName': config.params.device
        }
    }
};

exports.config = config;

Question: how do I emulate device which is passed as parameter through command line?

Answer 1

You can define the getMultiCapabilities function :

exports.config = {
    getMultiCapabilities: function () {
        return [{
            chromeOptions: {
                mobileEmulation: {
                    deviceName: this.params.device
                }
            }
        }];
    },

    // ...
};

Then pass the device parameter:

protractor mobiledevice.js --params.device="Apple iPhone 5"