diff --git a/action_pipe_unittest.cc b/action_pipe_unittest.cc
new file mode 100644
index 0000000..28cf248
--- /dev/null
+++ b/action_pipe_unittest.cc
@@ -0,0 +1,43 @@
+// Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <gtest/gtest.h>
+#include "update_engine/action.h"
+#include "update_engine/action_pipe.h"
+
+namespace chromeos_update_engine {
+
+using chromeos_update_engine::ActionPipe;
+
+class ActionPipeTestAction;
+
+template<>
+class ActionTraits<ActionPipeTestAction> {
+ public:
+  typedef string OutputObjectType;
+  typedef string InputObjectType;
+};
+
+// This is a simple Action class for testing.
+struct ActionPipeTestAction : public Action<ActionPipeTestAction> {
+  typedef string InputObjectType;
+  typedef string OutputObjectType;
+  ActionPipe<string>* in_pipe() { return in_pipe_.get(); }
+  ActionPipe<string>* out_pipe() { return out_pipe_.get(); }
+  void PerformAction() {}
+  string Type() const { return "ActionPipeTestAction"; }
+};
+
+class ActionPipeTest : public ::testing::Test { };
+
+// This test creates two simple Actions and sends a message via an ActionPipe
+// from one to the other.
+TEST(ActionPipeTest, SimpleTest) {
+  ActionPipeTestAction a, b;
+  BondActions(&a, &b);
+  a.out_pipe()->set_contents("foo");
+  EXPECT_EQ("foo", b.in_pipe()->contents());
+}
+
+}  // namespace chromeos_update_engine