1 files changed, 27 insertions, 0 deletions
diff --git a/railties/test/isolation/abstract_unit.rb b/railties/test/isolation/abstract_unit.rb
index 6c50911666..92d6a1729c 100644
--- a/railties/test/isolation/abstract_unit.rb
+++ b/railties/test/isolation/abstract_unit.rb
@@ -291,6 +291,33 @@ class ActiveSupport::TestCase
   include TestHelpers::Paths
   include TestHelpers::Rack
   include TestHelpers::Generation
+
+  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