1 files changed, 25 insertions, 0 deletions
diff --git a/railties/test/abstract_unit.rb b/railties/test/abstract_unit.rb
index 9ccc286b4e..0749615d03 100644
--- a/railties/test/abstract_unit.rb
+++ b/railties/test/abstract_unit.rb
@@ -26,3 +26,28 @@ end
 def jruby_skip(message = '')
   skip message if defined?(JRUBY_VERSION)
 end
+
+class ActiveSupport::TestCase
+  # 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