Reconfigure how the drivers work

This removes the useless Rack Test Driver that Rails was providing and
moves to a shim like approach for default adapters.

If someone wants to use one of the default Capybara Drivers then we will
initialize a new `CapybaraDriver` that simply sets the default driver.

Rails though is much more opinionated than Capybara and to make system
testing a "works out of the box" framework in Rails we have the
`RailsSeleniumDriver`. This driver sets defaults that Rails deems
important for selenium testing. The purpose of this is to simply add a
test and it just works.

1 files changed, 58 insertions, 0 deletions

diff --git a/actionpack/test/system_testing/rails_selenium_driver_test.rb b/actionpack/test/system_testing/rails_selenium_driver_test.rb
new file mode 100644
index 0000000000..c239444838
--- /dev/null
+++ b/actionpack/test/system_testing/rails_selenium_driver_test.rb
@@ -0,0 +1,58 @@
+require 'abstract_unit'
+
+class RailsSeleniumDriverTest < ActiveSupport::TestCase
+  def setup
+    Rails::SystemTestCase.driver = :rails_selenium_driver
+  end
+
+  def test_default_driver_adapter
+    assert_kind_of SystemTesting::DriverAdapters::RailsSeleniumDriver, Rails::SystemTestCase.driver
+  end
+
+  def test_default_settings
+    assert_equal :chrome, Rails::SystemTestCase.driver.browser
+    assert_equal :puma, Rails::SystemTestCase.driver.server
+    assert_equal 28100, Rails::SystemTestCase.driver.port
+    assert_equal [1400,1400], Rails::SystemTestCase.driver.screen_size
+  end
+
+  def test_setting_browser
+    Rails::SystemTestCase.driver = SystemTesting::DriverAdapters::RailsSeleniumDriver.new(
+      browser: :firefox
+    )
+
+    assert_equal :firefox, Rails::SystemTestCase.driver.browser
+  end
+
+  def test_setting_server
+    Rails::SystemTestCase.driver = SystemTesting::DriverAdapters::RailsSeleniumDriver.new(
+      server: :webrick
+    )
+
+    assert_equal :webrick, Rails::SystemTestCase.driver.server
+  end
+
+  def test_setting_port
+    Rails::SystemTestCase.driver = SystemTesting::DriverAdapters::RailsSeleniumDriver.new(
+      port: 3000
+    )
+
+    assert_equal 3000, Rails::SystemTestCase.driver.port
+  end
+
+  def test_setting_screen_size
+    Rails::SystemTestCase.driver = SystemTesting::DriverAdapters::RailsSeleniumDriver.new(
+      screen_size: [ 800, 800 ]
+    )
+
+    assert_equal [ 800, 800 ], Rails::SystemTestCase.driver.screen_size
+  end
+
+  def test_does_not_accept_nonsense_kwargs
+    assert_raises ArgumentError do
+      Rails::SystemTestCase.driver = SystemTesting::DriverAdapters::RailsSeleniumDriver.new(
+        made_up_arg: 'x'
+      )
+    end
+  end
+end