Add ability to run system tests via Capybara

Capybara defaults to Rack Test for it's driver and works out of the box
but this adds the headers and allows for future configurable adapters
for system testing.

1 files changed, 24 insertions, 0 deletions

diff --git a/actionpack/lib/system_testing/driver_adapters/capybara_rack_test_driver.rb b/actionpack/lib/system_testing/driver_adapters/capybara_rack_test_driver.rb
new file mode 100644
index 0000000000..2890686e29
--- /dev/null
+++ b/actionpack/lib/system_testing/driver_adapters/capybara_rack_test_driver.rb
@@ -0,0 +1,24 @@
+module SystemTesting
+  module DriverAdapters
+    class CapybaraRackTestDriver
+      attr_reader :useragent
+
+      def initialize(useragent: 'Capybara')
+        @useragent = useragent
+      end
+
+      def call
+        registration
+      end
+
+      private
+        def registration
+          Capybara.register_driver :rack_test do |app|
+            Capybara::RackTest::Driver.new(app, headers: {
+              'HTTP_USER_AGENT' => @useragent
+            })
+          end
+        end
+    end
+  end
+end