require"active_support/testing/autorun"require"action_system_test"classBrowserTest<ActiveSupport::TestCasetest"initializing the browser"dobrowser=ActionSystemTest::Browser.new(:chrome,[1400,1400])assert_equal:chrome,browser.instance_variable_get(:@name)assert_equal[1400,1400],browser.instance_variable_get(:@screen_size)endend