1 files changed, 37 insertions, 2 deletions
diff --git a/railties/test/isolation/abstract_unit.rb b/railties/test/isolation/abstract_unit.rb
index 6c50911666..40469e31d7 100644
--- a/railties/test/isolation/abstract_unit.rb
+++ b/railties/test/isolation/abstract_unit.rb
@@ -9,6 +9,7 @@
 require 'fileutils'
 
 require 'bundler/setup' unless defined?(Bundler)
+require 'active_support'
 require 'active_support/testing/autorun'
 require 'active_support/test_case'
 
@@ -140,6 +141,7 @@ module TestHelpers
         config.eager_load = false
         config.session_store :cookie_store, key: "_myapp_session"
         config.active_support.deprecation = :log
+        config.active_support.test_order = :random
         config.action_controller.allow_forgery_protection = false
       RUBY
     end
@@ -276,8 +278,12 @@ module TestHelpers
     end
 
     def use_frameworks(arr)
-      to_remove =  [:actionmailer,
-                    :activerecord] - arr
+      to_remove = [:actionmailer, :activerecord] - arr
+
+      if to_remove.include?(:activerecord)
+        remove_from_config 'config.active_record.*'
+      end
+
       $:.reject! {|path| path =~ %r'/(#{to_remove.join('|')})/' }
     end
 
@@ -291,6 +297,35 @@ class ActiveSupport::TestCase
   include TestHelpers::Paths
   include TestHelpers::Rack
   include TestHelpers::Generation
+
+  self.test_order = :sorted
+
+  private
+
+  def capture(stream)
+    stream = stream.to_s
+    captured_stream = Tempfile.new(stream)
+    stream_io = eval("$#{stream}")
+    origin_stream = stream_io.dup
+    stream_io.reopen(captured_stream)
+
+    yield
+
+    stream_io.rewind
+    return captured_stream.read
+  ensure
+    captured_stream.close
+    captured_stream.unlink
+    stream_io.reopen(origin_stream)
+  end
+
+  def quietly
+    silence_stream(STDOUT) do
+      silence_stream(STDERR) do
+        yield
+      end
+    end
+  end
 end
 
 # Create a scope and build a fixture rails app