Using selenium, take screenshots in Firefox of a responsive website running on a local python simple server at different breakpoints

screencap-responsive-local-firefox

#!/usr/bin/ruby
# Katie Harron - @pibby

require 'watir-webdriver'

mq = [320,480,640,768,1024,1280,1440]

b = Watir::Browser.new :firefox
b.goto 'http://localhost:8000'

mq.each do |i|
	width = i + 15
	height = 5000
	puts i
	
	b.window.resize_to(width, height)
	sleep 3
	b.screenshot.save "screenshots/ff-#{i}.png"
end

b.quit