4 files changed, 10 insertions, 87 deletions
diff --git a/railties/lib/rails/generators/testing/behaviour.rb b/railties/lib/rails/generators/testing/behaviour.rb
index fd2ea274e1..c9700e1cd7 100644
--- a/railties/lib/rails/generators/testing/behaviour.rb
+++ b/railties/lib/rails/generators/testing/behaviour.rb
@@ -2,6 +2,7 @@ require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/module/delegation'
 require 'active_support/core_ext/hash/reverse_merge'
 require 'active_support/core_ext/kernel/reporting'
+require 'active_support/testing/stream'
 require 'active_support/concern'
 require 'rails/generators'
 
@@ -10,6 +11,7 @@ module Rails
     module Testing
       module Behaviour
         extend ActiveSupport::Concern
+        include ActiveSupport::Testing::Stream
 
         included do
           class_attribute :destination_root, :current_path, :generator_class, :default_arguments
@@ -101,22 +103,6 @@ module Rails
             Dir.glob("#{dirname}/[0-9]*_*.rb").grep(/\d+_#{file_name}.rb$/).first
           end
 
-          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
       end
     end
   end
diff --git a/railties/test/abstract_unit.rb b/railties/test/abstract_unit.rb
index 0749615d03..ab8883e135 100644
--- a/railties/test/abstract_unit.rb
+++ b/railties/test/abstract_unit.rb
@@ -4,6 +4,7 @@ require File.expand_path("../../../load_paths", __FILE__)
 
 require 'stringio'
 require 'active_support/testing/autorun'
+require 'active_support/testing/stream'
 require 'fileutils'
 
 require 'active_support'
@@ -28,26 +29,10 @@ def jruby_skip(message = '')
 end
 
 class ActiveSupport::TestCase
+  include ActiveSupport::Testing::Stream
+
   # FIXME: we have tests that depend on run order, we should fix that and
   # remove this method call.
   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
 end
diff --git a/railties/test/generators/generators_test_helper.rb b/railties/test/generators/generators_test_helper.rb
index 7c5183e6c8..62ca0ecb4b 100644
--- a/railties/test/generators/generators_test_helper.rb
+++ b/railties/test/generators/generators_test_helper.rb
@@ -1,5 +1,6 @@
 require 'abstract_unit'
 require 'active_support/core_ext/module/remove_method'
+require 'active_support/testing/stream'
 require 'rails/generators'
 require 'rails/generators/test_case'
 
@@ -23,6 +24,8 @@ require 'action_dispatch'
 require 'action_view'
 
 module GeneratorsTestHelper
+  include ActiveSupport::Testing::Stream
+
   def self.included(base)
     base.class_eval do
       destination File.join(Rails.root, "tmp")
@@ -42,21 +45,4 @@ module GeneratorsTestHelper
     FileUtils.cp routes, destination
   end
 
-  def quietly
-    silence_stream(STDOUT) do
-      silence_stream(STDERR) do
-        yield
-      end
-    end
-  end
-
-  def silence_stream(stream)
-    old_stream = stream.dup
-    stream.reopen(IO::NULL)
-    stream.sync = true
-    yield
-  ensure
-    stream.reopen(old_stream)
-    old_stream.close
-  end
 end
diff --git a/railties/test/isolation/abstract_unit.rb b/railties/test/isolation/abstract_unit.rb
index 2c4d9c5995..5be321ecf2 100644
--- a/railties/test/isolation/abstract_unit.rb
+++ b/railties/test/isolation/abstract_unit.rb
@@ -11,6 +11,7 @@ require 'fileutils'
 require 'bundler/setup' unless defined?(Bundler)
 require 'active_support'
 require 'active_support/testing/autorun'
+require 'active_support/testing/stream'
 require 'active_support/test_case'
 
 RAILS_FRAMEWORK_ROOT = File.expand_path("#{File.dirname(__FILE__)}/../../..")
@@ -310,45 +311,10 @@ class ActiveSupport::TestCase
   include TestHelpers::Paths
   include TestHelpers::Rack
   include TestHelpers::Generation
+  include ActiveSupport::Testing::Stream
 
   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
-
-  def silence_stream(stream)
-    old_stream = stream.dup
-    stream.reopen(IO::NULL)
-    stream.sync = true
-    yield
-  ensure
-    stream.reopen(old_stream)
-    old_stream.close
-  end
 end
 
 # Create a scope and build a fixture rails app