diff --git a/buffet/async_event_sequencer_unittest.cc b/buffet/async_event_sequencer_unittest.cc
new file mode 100644
index 0000000..d95ff56
--- /dev/null
+++ b/buffet/async_event_sequencer_unittest.cc
@@ -0,0 +1,96 @@
+// Copyright 2014 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 "buffet/async_event_sequencer.h"
+
+#include <base/bind_helpers.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+namespace buffet {
+
+namespace dbus_utils {
+
+namespace {
+
+const char kTestInterface[] = "org.test.if";
+const char kTestMethod1[] = "TestMethod1";
+const char kTestMethod2[] = "TestMethod2";
+
+}  // namespace
+
+class AsyncEventSequencerTest : public ::testing::Test {
+ public:
+  MOCK_METHOD1(HandleCompletion, void(bool all_succeeded));
+
+  void SetUp() {
+      aec_ = new AsyncEventSequencer();
+      cb_ = base::Bind(&AsyncEventSequencerTest::HandleCompletion,
+                       base::Unretained(this));
+  }
+
+  scoped_refptr<AsyncEventSequencer> aec_;
+  AsyncEventSequencer::CompletionAction cb_;
+};
+
+TEST_F(AsyncEventSequencerTest, WaitForCompletionActions) {
+  auto finished_handler = aec_->GetHandler("handler failed", false);
+  finished_handler.Run(true);
+  EXPECT_CALL(*this, HandleCompletion(true)).Times(1);
+  aec_->OnAllTasksCompletedCall({cb_});
+}
+
+TEST_F(AsyncEventSequencerTest, MultiInitActionsSucceed) {
+  auto finished_handler1 = aec_->GetHandler("handler failed", false);
+  auto finished_handler2 = aec_->GetHandler("handler failed", false);
+  aec_->OnAllTasksCompletedCall({cb_});
+  finished_handler1.Run(true);
+  EXPECT_CALL(*this, HandleCompletion(true)).Times(1);
+  finished_handler2.Run(true);
+}
+
+TEST_F(AsyncEventSequencerTest, SomeInitActionsFail) {
+  auto finished_handler1 = aec_->GetHandler("handler failed", false);
+  auto finished_handler2 = aec_->GetHandler("handler failed", false);
+  aec_->OnAllTasksCompletedCall({cb_});
+  finished_handler1.Run(false);
+  EXPECT_CALL(*this, HandleCompletion(false)).Times(1);
+  finished_handler2.Run(true);
+}
+
+TEST_F(AsyncEventSequencerTest, MultiDBusActionsSucceed) {
+  auto handler1 =  aec_->GetExportHandler(
+      kTestInterface, kTestMethod1, "method export failed", false);
+  auto handler2 =  aec_->GetExportHandler(
+      kTestInterface, kTestMethod2, "method export failed", false);
+  aec_->OnAllTasksCompletedCall({cb_});
+  handler1.Run(kTestInterface, kTestMethod1, true);
+  EXPECT_CALL(*this, HandleCompletion(true)).Times(1);
+  handler2.Run(kTestInterface, kTestMethod2, true);
+}
+
+TEST_F(AsyncEventSequencerTest, SomeDBusActionsFail) {
+  auto handler1 =  aec_->GetExportHandler(
+      kTestInterface, kTestMethod1, "method export failed", false);
+  auto handler2 =  aec_->GetExportHandler(
+      kTestInterface, kTestMethod2, "method export failed", false);
+  aec_->OnAllTasksCompletedCall({cb_});
+  handler1.Run(kTestInterface, kTestMethod1, true);
+  EXPECT_CALL(*this, HandleCompletion(false)).Times(1);
+  handler2.Run(kTestInterface, kTestMethod2, false);
+}
+
+TEST_F(AsyncEventSequencerTest, MixedActions) {
+  auto handler1 =  aec_->GetExportHandler(
+      kTestInterface, kTestMethod1, "method export failed", false);
+  auto handler2 = aec_->GetHandler("handler failed", false);
+  aec_->OnAllTasksCompletedCall({cb_});
+  handler1.Run(kTestInterface, kTestMethod1, true);
+  EXPECT_CALL(*this, HandleCompletion(true)).Times(1);
+  handler2.Run(true);
+}
+
+}  // namespace dbus_utils
+
+}  // namespace buffet