1 files changed, 18 insertions, 10 deletions
diff --git a/actionpack/test/abstract_unit.rb b/actionpack/test/abstract_unit.rb
index 4185ce1a1f..f4787ed27a 100644
--- a/actionpack/test/abstract_unit.rb
+++ b/actionpack/test/abstract_unit.rb
@@ -1,6 +1,8 @@
-$:.unshift(File.dirname(__FILE__) + "/lib")
-$:.unshift(File.dirname(__FILE__) + "/fixtures/helpers")
-$:.unshift(File.dirname(__FILE__) + "/fixtures/alternate_helpers")
+# frozen_string_literal: true
+
+$:.unshift File.expand_path("lib", __dir__)
+$:.unshift File.expand_path("fixtures/helpers", __dir__)
+$:.unshift File.expand_path("fixtures/alternate_helpers", __dir__)
 
 require "active_support/core_ext/kernel/reporting"
 
@@ -42,7 +44,7 @@ module Rails
       @_env ||= ActiveSupport::StringInquirer.new(ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "test")
     end
 
-    def root; end;
+    def root; end
   end
 end
 
@@ -56,7 +58,7 @@ ActiveSupport::Deprecation.debug = true
 # Disable available locale checks to avoid warnings running the test suite.
 I18n.enforce_available_locales = false
 
-FIXTURE_LOAD_PATH = File.join(File.dirname(__FILE__), "fixtures")
+FIXTURE_LOAD_PATH = File.join(__dir__, "fixtures")
 
 SharedTestRoutes = ActionDispatch::Routing::RouteSet.new
 
@@ -156,7 +158,7 @@ class ActionDispatch::IntegrationTest < ActiveSupport::TestCase
   end
 
   def with_autoload_path(path)
-    path = File.join(File.dirname(__FILE__), "fixtures", path)
+    path = File.join(__dir__, "fixtures", path)
     if ActiveSupport::Dependencies.autoload_paths.include?(path)
       yield
     else
@@ -175,7 +177,7 @@ end
 class Rack::TestCase < ActionDispatch::IntegrationTest
   def self.testing(klass = nil)
     if klass
-      @testing = "/#{klass.name.underscore}".sub!(/_controller$/, "")
+      @testing = "/#{klass.name.underscore}".sub(/_controller$/, "")
     else
       @testing
     end
@@ -378,10 +380,8 @@ class ForkingExecutor
   def initialize(size)
     @size  = size
     @queue = Server.new
-    file   = File.join Dir.tmpdir, Dir::Tmpname.make_tmpname("rails-tests", "fd")
-    @url   = "drbunix://#{file}"
     @pool  = nil
-    DRb.start_service @url, @queue
+    @url = DRb.start_service("drbunix:", @queue).uri
   end
 
   def <<(work); @queue << work; end
@@ -447,3 +447,11 @@ end
 class DrivenBySeleniumWithChrome < ActionDispatch::SystemTestCase
   driven_by :selenium, using: :chrome
 end
+
+class DrivenBySeleniumWithHeadlessChrome < ActionDispatch::SystemTestCase
+  driven_by :selenium, using: :headless_chrome
+end
+
+class DrivenBySeleniumWithHeadlessFirefox < ActionDispatch::SystemTestCase
+  driven_by :selenium, using: :headless_firefox
+end