Is it possible to let capybara/webdriver start firefox minimized/unfocused?

Is it possible to stop Firefox from popping up when cucumber hits a @javascript tag? After a while it gets frust开发者_开发百科rating to always get disrupted while running tests.

It would be nice if webdriver was to start Firefox minimized or not focus on it.

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There's no API in WebDriver to do this, and it's not really advisable since Firefox won't trigger certain events (like focus, blur) when the window is in the background. I usually work around this by using a virtual machine (e.g. in VirtualBox) or a separate X display.

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You can add lines below to Info.plist of Firefox.app. After that it will start without grabbing focus.

<key>LSBackgroundOnly</key>
<string>1</string>