Selenium WebDriver (Ruby): flag to start Chrome maximized is lost from desired_capabilities

Question

When I set my desired_capabilities for Chrome as such

caps = {
  "chromeOptions" => {
    "prefs" => {
      :plugins => {
        :plugins_disabled => ["Chrome PDF Viewer"]
      },

      :download => {
        :prompt_for_download => false,
        :directory_upgrade   => true,
        :default_directory   => ENV['files_dir']
      }
    },

    "args" => ['--start-maximized']
  }
}

then query caps with caps['chromeOptions']['args'], the --start-maximized flag is lost - this is what is returned

caps['chromeOptions']['args']
=> []

What is the issue here?

`browser = Selenium::WebDriver.for :chrome, desired_capabilities: caps` — Noffica, Mar 03 '17 at 23:51

score 1 · Answer 1 · answered Mar 03 '17 at 23:56

1

You should start with the chrome capabilities first:

caps = Selenium::WebDriver::Remote::Capabilities.chrome
caps.merge!(your_caps)
browser = Selenium::WebDriver.for :chrome, desired_capabilities: caps

answered Mar 03 '17 at 23:56

Lucas Tierney

2,503
15
13

It still loses it. – Noffica Mar 04 '17 at 01:02
What are you expecting? Are you using caps after passing it? Because yes it gets modified – Lucas Tierney Mar 04 '17 at 01:07
Ah, I see. I did not know that it would be modified. – Noffica Mar 04 '17 at 01:10

Selenium WebDriver (Ruby): flag to start Chrome maximized is lost from desired_capabilities

1 Answers1