Fix doc of `ActionDispatch::SystemTestCase` [ci skip]

* Fix broken format.
* Need to specify driver to the first argument of `driven_by`.
* `add_emulation` doesn't have `device` keyword. Ref: https://github.com/SeleniumHQ/selenium/blob/master/rb/lib/selenium/webdriver/chrome/options.rb#L142-L162

1 files changed, 7 insertions, 7 deletions

diff --git a/actionpack/lib/action_dispatch/system_test_case.rb b/actionpack/lib/action_dispatch/system_test_case.rb
index 484eb46331..066daa4a12 100644
--- a/actionpack/lib/action_dispatch/system_test_case.rb
+++ b/actionpack/lib/action_dispatch/system_test_case.rb
@@ -93,19 +93,19 @@ module ActionDispatch
   # of through the +options+ hash.
   #
   # As an example, if you want to add mobile emulation on chrome, you'll have to
-  # create an instance of selenium's `Chrome::Options` object and add
+  # create an instance of selenium's +Chrome::Options+ object and add
   # capabilities with a block.
   #
-  # The block will be passed an instance of `<Driver>::Options` where you can
+  # The block will be passed an instance of <tt><Driver>::Options</tt> where you can
   # define the capabilities you want. Please refer to your driver documentation
   # to learn about supported options.
   #
-  # class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
-  #   driven_by :chrome, screen_size: [1024, 768] do |driver_option|
-  #     driver_option.add_emulation(device: 'iPhone 6')
-  #     driver_option.add_extension('path/to/chrome_extension.crx')
+  #   class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
+  #     driven_by :selenium, using: :chrome, screen_size: [1024, 768] do |driver_option|
+  #       driver_option.add_emulation(device_name: 'iPhone 6')
+  #       driver_option.add_extension('path/to/chrome_extension.crx')
+  #     end
   #   end
-  # end
   #
   # Because <tt>ActionDispatch::SystemTestCase</tt> is a shim between Capybara
   # and Rails, any driver that is supported by Capybara is supported by system