Implement unittests for IBusEngineService

chromeos/dbus/ibus/ibus_engine_service_unittest.cc

Index: chromeos/dbus/ibus/ibus_engine_service_unittest.cc
diff --git a/chromeos/dbus/ibus/ibus_engine_service_unittest.cc b/chromeos/dbus/ibus/ibus_engine_service_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c80cae9fa686803900c334d0606071ba723a2f6b
--- /dev/null
+++ b/chromeos/dbus/ibus/ibus_engine_service_unittest.cc
@@ -0,0 +1,907 @@
+// Copyright (c) 2012 The Chromium 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 "chromeos/dbus/ibus/ibus_engine_service.h"
+
+#include <map>
+#include "base/bind.h"
+#include "base/message_loop.h"
+#include "base/values.h"
+#include "chromeos/dbus/ibus/ibus_constants.h"
+#include "chromeos/dbus/ibus/ibus_lookup_table.h"
+#include "chromeos/dbus/ibus/ibus_property.h"
+#include "chromeos/dbus/ibus/ibus_text.h"
+#include "dbus/message.h"
+#include "dbus/mock_bus.h"
+#include "dbus/mock_exported_object.h"
+#include "dbus/object_path.h"
+#include "dbus/values_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::Invoke;
+using testing::Return;
+using testing::_;
+
+namespace chromeos {
+
+namespace {
+const std::string kObjectPath = "/org/freedesktop/IBus/Engine/1";
+
+class MockIBusEngineHandler : public IBusEngineHandlerInterface {
+ public:
+  MOCK_METHOD0(FocusIn, void());
+  MOCK_METHOD0(FocusOut, void());
+  MOCK_METHOD0(Enable, void());
+  MOCK_METHOD0(Disable, void());
+  MOCK_METHOD2(PropertyActivate, void(const std::string& property_name,
+                                      IBusPropertyState property_state));
+  MOCK_METHOD1(PropertyShow, void(const std::string& property_name));
+  MOCK_METHOD1(PropertyHide, void(const std::string& property_name));
+  MOCK_METHOD1(SetCapability, void(IBusCapability capability));
+  MOCK_METHOD0(Reset, void());
+  MOCK_METHOD3(ProcessKeyEvent, bool(uint32 keysym, uint32 keycode,
+                                     uint32 state));
+  MOCK_METHOD3(CandidateClicked, void(uint32 index, IBusMouseButton button,
+                                      uint32 state));
+  MOCK_METHOD3(SetSurroundingText, void(const std::string& text,
+                                        uint32 cursor_pos,
+                                        uint32 anchor_pos));
+};
+
+class MockResponseSender {
+ public:
+  MOCK_METHOD1(Run, void(dbus::Response* reponse));
+};
+
+// Used for method call empty response evaluation.
+class EmptyResponseExpectation {
+ public:
+  explicit EmptyResponseExpectation(const uint32 serial_no)
+      : serial_no_(serial_no) {}
+
+  // Evaluates the given |resposne| has no argument.
+  void Evaluate(dbus::Response* response) {
+    EXPECT_EQ(serial_no_, response->GetReplySerial());
+    dbus::MessageReader reader(response);
+    EXPECT_FALSE(reader.HasMoreData());
+  }
+
+ private:
+  const uint32 serial_no_;
+
+  DISALLOW_COPY_AND_ASSIGN(EmptyResponseExpectation);
+};
+
+// Used for method call a boolean response evaluation.
+class BoolResponseExpectation {
+ public:
+  explicit BoolResponseExpectation(uint32 serial_no, bool result)
+      : serial_no_(serial_no),
+        result_(result) {}
+
+  // Evaluates the given |resposne| has only one boolean and which is equals to
+  // |result_| which is given in ctor.
+  void Evaluate(dbus::Response* response) {
+    EXPECT_EQ(serial_no_, response->GetReplySerial());
+    dbus::MessageReader reader(response);
+    bool result = false;
+    EXPECT_TRUE(reader.PopBool(&result));
+    EXPECT_EQ(result_, result);
+    EXPECT_FALSE(reader.HasMoreData());
+  }
+
+ private:
+  uint32 serial_no_;
+  bool result_;
+
+  DISALLOW_COPY_AND_ASSIGN(BoolResponseExpectation);
+};
+
+// Used for RegisterProperties signal message evaluation.
+class RegisterPropertiesExpectation {
+ public:
+  explicit RegisterPropertiesExpectation(
+      const ibus::IBusPropertyList& property_list)
+      : property_list_(property_list) {}
+
+  // Evaluates the given |signal| is a valid message.
+  void Evaluate(dbus::Signal* signal) {
+    ibus::IBusPropertyList property_list;
+
+    // Read a signal argument.
+    dbus::MessageReader reader(signal);
+    EXPECT_TRUE(ibus::PopIBusPropertyList(&reader, &property_list));
+    EXPECT_FALSE(reader.HasMoreData());
+
+    // Check an argument.
+    EXPECT_EQ(property_list_.size(), property_list.size());
+    for (size_t i = 0; i < property_list_.size(); ++i) {
+      EXPECT_EQ(property_list_[i]->key(), property_list[i]->key());
+      EXPECT_EQ(property_list_[i]->type(), property_list[i]->type());
+      EXPECT_EQ(property_list_[i]->label(), property_list[i]->label());
+      EXPECT_EQ(property_list_[i]->tooltip(), property_list[i]->tooltip());
+      EXPECT_EQ(property_list_[i]->visible(), property_list[i]->visible());
+      EXPECT_EQ(property_list_[i]->checked(), property_list[i]->checked());
+    }
+  }
+
+ private:
+  const ibus::IBusPropertyList& property_list_;
+
+  DISALLOW_COPY_AND_ASSIGN(RegisterPropertiesExpectation);
+};
+
+// Used for UpdatePreedit signal message evaluation.
+class UpdatePreeditExpectation {
+ public:
+  UpdatePreeditExpectation(
+      const ibus::IBusText& ibus_text,
+      uint32 cursor_pos,
+      bool is_visible,
+      IBusEngineService::IBusEnginePreeditFocusOutMode mode)
+      : ibus_text_(ibus_text),
+        cursor_pos_(cursor_pos),
+        is_visible_(is_visible),
+        mode_(mode) {}
+
+  // Evaluates the given |signal| is a valid message.
+  void Evaluate(dbus::Signal* signal) {
+    ibus::IBusText ibus_text;
+    uint32 cursor_pos = 0;
+    bool is_visible = false;
+    uint32 preedit_mode = 0;
+
+    // Read signal arguments.
+    dbus::MessageReader reader(signal);
+    EXPECT_TRUE(ibus::PopIBusText(&reader, &ibus_text));
+    EXPECT_TRUE(reader.PopUint32(&cursor_pos));
+    EXPECT_TRUE(reader.PopBool(&is_visible));
+    EXPECT_TRUE(reader.PopUint32(&preedit_mode));
+    EXPECT_FALSE(reader.HasMoreData());
+
+    // Check arguments.
+    EXPECT_EQ(ibus_text_.text(), ibus_text.text());
+    EXPECT_EQ(cursor_pos_, cursor_pos);
+    EXPECT_EQ(is_visible_, is_visible);
+    EXPECT_EQ(mode_,
+              static_cast<IBusEngineService::IBusEnginePreeditFocusOutMode>(
+                  preedit_mode));
+  }
+
+ private:
+  const ibus::IBusText& ibus_text_;
+  uint32 cursor_pos_;
+  bool is_visible_;
+  IBusEngineService::IBusEnginePreeditFocusOutMode mode_;
+
+  DISALLOW_COPY_AND_ASSIGN(UpdatePreeditExpectation);
+};
+
+// Used for UpdateAuxiliaryText signal message evaluation.
+class UpdateAuxiliaryTextExpectation {
+ public:
+  UpdateAuxiliaryTextExpectation(const ibus::IBusText& ibus_text,
+                                 bool is_visible)
+      : ibus_text_(ibus_text), is_visible_(is_visible) {}
+
+  // Evaluates the given |signal| is a valid message.
+  void Evaluate(dbus::Signal* signal) {
+    ibus::IBusText ibus_text;
+    bool is_visible = false;
+
+    // Read signal arguments.
+    dbus::MessageReader reader(signal);
+    EXPECT_TRUE(ibus::PopIBusText(&reader, &ibus_text));
+    EXPECT_TRUE(reader.PopBool(&is_visible));
+    EXPECT_FALSE(reader.HasMoreData());
+
+    // Check arguments.
+    EXPECT_EQ(ibus_text_.text(), ibus_text.text());
+    EXPECT_EQ(is_visible_, is_visible);
+  }
+
+ private:
+  const ibus::IBusText& ibus_text_;
+  bool is_visible_;
+
+  DISALLOW_COPY_AND_ASSIGN(UpdateAuxiliaryTextExpectation);
+};
+
+// Used for UpdateLookupTable signal message evaluation.
+class UpdateLookupTableExpectation {
+ public:
+  UpdateLookupTableExpectation(const ibus::IBusLookupTable& lookup_table,
+                               bool is_visible)
+      : lookup_table_(lookup_table), is_visible_(is_visible) {}
+
+  // Evaluates the given |signal| is a valid message.
+  void Evaluate(dbus::Signal* signal) {
+    ibus::IBusLookupTable lookup_table;
+    bool is_visible = false;
+
+    // Read signal arguments.
+    dbus::MessageReader reader(signal);
+    EXPECT_TRUE(PopIBusLookupTable(&reader, &lookup_table));
+    EXPECT_TRUE(reader.PopBool(&is_visible));
+    EXPECT_FALSE(reader.HasMoreData());
+
+    // Check arguments.
+    EXPECT_EQ(lookup_table_.page_size(), lookup_table.page_size());
+    EXPECT_EQ(lookup_table_.cursor_position(), lookup_table.cursor_position());
+    EXPECT_EQ(lookup_table_.is_cursor_visible(),
+              lookup_table.is_cursor_visible());
+    EXPECT_EQ(is_visible_, is_visible);
+  }
+
+ private:
+  const ibus::IBusLookupTable& lookup_table_;
+  bool is_visible_;
+
+  DISALLOW_COPY_AND_ASSIGN(UpdateLookupTableExpectation);
+};
+
+// Used for UpdateProperty signal message evaluation.
+class UpdatePropertyExpectation {
+ public:
+  explicit UpdatePropertyExpectation(const ibus::IBusProperty& property)
+      : property_(property) {}
+
+  // Evaluates the given |signal| is a valid message.
+  void Evaluate(dbus::Signal* signal) {
+    ibus::IBusProperty property;
+
+    // Read a signal argument.
+    dbus::MessageReader reader(signal);
+    EXPECT_TRUE(PopIBusProperty(&reader, &property));
+    EXPECT_FALSE(reader.HasMoreData());
+
+    // Check the argument.
+    EXPECT_EQ(property_.key(), property.key());
+    EXPECT_EQ(property_.type(), property.type());
+    EXPECT_EQ(property_.label(), property.label());
+    EXPECT_EQ(property_.tooltip(), property.tooltip());
+    EXPECT_EQ(property_.visible(), property.visible());
+    EXPECT_EQ(property_.checked(), property.checked());
+  }
+
+ private:
+  const ibus::IBusProperty& property_;
+
+  DISALLOW_COPY_AND_ASSIGN(UpdatePropertyExpectation);
+};
+
+// Used for ForwardKeyEvent signal message evaluation.
+class ForwardKeyEventExpectation {
+ public:
+  ForwardKeyEventExpectation(uint32 keyval, uint32 keycode, uint32 state)
+      : keyval_(keyval),
+        keycode_(keycode),
+        state_(state) {}
+
+  // Evaluates the given |signal| is a valid message.
+  void Evaluate(dbus::Signal* signal) {
+    uint32 keyval = 0;
+    uint32 keycode = 0;
+    uint32 state = 0;
+
+    // Read signal arguments.
+    dbus::MessageReader reader(signal);
+    EXPECT_TRUE(reader.PopUint32(&keyval));
+    EXPECT_TRUE(reader.PopUint32(&keycode));
+    EXPECT_TRUE(reader.PopUint32(&state));
+    EXPECT_FALSE(reader.HasMoreData());
+
+    // Check arguments.
+    EXPECT_EQ(keyval_, keyval);
+    EXPECT_EQ(keycode_, keycode);
+    EXPECT_EQ(state_, state);
+  }
+
+ private:
+  uint32 keyval_;
+  uint32 keycode_;
+  uint32 state_;
+
+  DISALLOW_COPY_AND_ASSIGN(ForwardKeyEventExpectation);
+};
+
+// Used for RequireSurroundingText signal message evaluation.
+class RequireSurroundingTextExpectation {
+ public:
+  RequireSurroundingTextExpectation() {}
+
+  // Evaluates the given |signal| is a valid message.
+  void Evaluate(dbus::Signal* signal) {
+    dbus::MessageReader reader(signal);
+    EXPECT_FALSE(reader.HasMoreData());
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(RequireSurroundingTextExpectation);
+};
+
+}  // namespace
+
+class IBusEngineServiceTest : public testing::Test {
+ public:
+  IBusEngineServiceTest() {}
+
+  virtual void SetUp() OVERRIDE {
+    // Create a mock bus.
+    dbus::Bus::Options options;
+    options.bus_type = dbus::Bus::SYSTEM;
+    mock_bus_ = new dbus::MockBus(options);
+
+    // Create a mock exported object.
+    mock_exported_object_ = new dbus::MockExportedObject(
+        mock_bus_.get(),
+        dbus::ObjectPath(kObjectPath));
+
+    EXPECT_CALL(*mock_bus_.get(),
+                GetExportedObject(dbus::ObjectPath(kObjectPath)))
+        .WillOnce(Return(mock_exported_object_.get()));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kFocusInMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kFocusOutMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kEnableMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kDisableMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kPropertyActivateMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kPropertyShowMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kPropertyHideMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kSetCapabilityMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kResetMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kProcessKeyEventMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kCandidateClickedMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    EXPECT_CALL(*mock_exported_object_, ExportMethod(
+        ibus::engine::kServiceInterface,
+        ibus::engine::kSetSurroundingTextMethod , _, _))
+        .WillRepeatedly(
+            Invoke(this, &IBusEngineServiceTest::OnMethodExported));
+
+    // Surpress uninteresting mock function call warning.
+    EXPECT_CALL(*mock_bus_.get(),
+                AssertOnOriginThread())
+        .WillRepeatedly(Return());
+
+    // Create a service
+    service_.reset(IBusEngineService::Create(
+        REAL_DBUS_CLIENT_IMPLEMENTATION,
+        mock_bus_.get(),
+        dbus::ObjectPath(kObjectPath)));
+
+    // Call Initialize to set engine handler.
+    engine_handler_ = new MockIBusEngineHandler();
+    service_->Initialize(engine_handler_);
+  }
+
+ protected:
+  // The service to be tested.
+  scoped_ptr<IBusEngineService> service_;
+  // The mock engine handler. Do not free, this is owned by IBusEngineService.
+  MockIBusEngineHandler* engine_handler_;
+  // The mock bus.
+  scoped_refptr<dbus::MockBus> mock_bus_;
+  // The mock exported object.
+  scoped_refptr<dbus::MockExportedObject> mock_exported_object_;
+  // A message loop to emulate asynchronous behavior.
+  MessageLoop message_loop_;
+  // The map from method call to method call handler.
+  std::map<std::string, dbus::ExportedObject::MethodCallCallback>
+      method_callback_map_;
+
+ private:
+  // Used to implement the mock method call.
+  void OnMethodExported(
+      const std::string& interface_name,
+      const std::string& method_name,
+      const dbus::ExportedObject::MethodCallCallback& method_callback,
+      const dbus::ExportedObject::OnExportedCallback& on_exported_callback) {
+    method_callback_map_[method_name] = method_callback;
+    const bool success = true;
+    message_loop_.PostTask(FROM_HERE, base::Bind(on_exported_callback,
+                                                 interface_name,
+                                                 method_name,
+                                                 success));
+  }
+};
+
+TEST_F(IBusEngineServiceTest, FocusInTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  EXPECT_CALL(*engine_handler_, FocusIn());
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kFocusInMethod);
+  method_call.SetSerial(kSerialNo);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kFocusInMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kFocusInMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, FocusOutTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  EXPECT_CALL(*engine_handler_, FocusOut());
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kFocusOutMethod);
+  method_call.SetSerial(kSerialNo);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kFocusOutMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kFocusOutMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, EnableTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  EXPECT_CALL(*engine_handler_, Enable());
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kEnableMethod);
+  method_call.SetSerial(kSerialNo);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kEnableMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kEnableMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, DisableTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  EXPECT_CALL(*engine_handler_, Disable());
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kDisableMethod);
+  method_call.SetSerial(kSerialNo);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kDisableMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kDisableMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, PropertyActivateTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  const std::string kPropertyName = "Property Name";
+  const IBusEngineHandlerInterface::IBusPropertyState kIBusPropertyState =
+      IBusEngineHandlerInterface::IBUS_PROPERTY_STATE_UNCHECKED;
+  EXPECT_CALL(*engine_handler_, PropertyActivate(kPropertyName,
+                                                 kIBusPropertyState));
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kPropertyActivateMethod);
+  method_call.SetSerial(kSerialNo);
+  dbus::MessageWriter writer(&method_call);
+  writer.AppendString(kPropertyName);
+  writer.AppendUint32(static_cast<uint32>(kIBusPropertyState));
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kPropertyActivateMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kPropertyActivateMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, ResetTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  EXPECT_CALL(*engine_handler_, Reset());
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kResetMethod);
+  method_call.SetSerial(kSerialNo);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kResetMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kResetMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, PropertyShowTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  const std::string kPropertyName = "Property Name";
+  EXPECT_CALL(*engine_handler_, PropertyShow(kPropertyName));
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kPropertyShowMethod);
+  method_call.SetSerial(kSerialNo);
+  dbus::MessageWriter writer(&method_call);
+  writer.AppendString(kPropertyName);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kPropertyShowMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kPropertyShowMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, PropertyHideTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  const std::string kPropertyName = "Property Name";
+  EXPECT_CALL(*engine_handler_, PropertyHide(kPropertyName));
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kPropertyHideMethod);
+  method_call.SetSerial(kSerialNo);
+  dbus::MessageWriter writer(&method_call);
+  writer.AppendString(kPropertyName);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kPropertyHideMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kPropertyHideMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, SetCapabilityTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  const IBusEngineHandlerInterface::IBusCapability kIBusCapability =
+      IBusEngineHandlerInterface::IBUS_CAPABILITY_PREEDIT_TEXT;
+  EXPECT_CALL(*engine_handler_, SetCapability(kIBusCapability));
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kSetCapabilityMethod);
+  method_call.SetSerial(kSerialNo);
+  dbus::MessageWriter writer(&method_call);
+  writer.AppendUint32(static_cast<uint32>(kIBusCapability));
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kSetCapabilityMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kSetCapabilityMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, ProcessKeyEventTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  const uint32 kKeySym = 0x64;
+  const uint32 kKeyCode = 0x20;
+  const uint32 kState = 0x00;
+  const bool kResult = true;
+
+  EXPECT_CALL(*engine_handler_, ProcessKeyEvent(kKeySym, kKeyCode, kState))
+      .WillOnce(Return(kResult));
+  MockResponseSender response_sender;
+  BoolResponseExpectation response_expectation(kSerialNo, kResult);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &BoolResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kProcessKeyEventMethod);
+  method_call.SetSerial(kSerialNo);
+  dbus::MessageWriter writer(&method_call);
+  writer.AppendUint32(kKeySym);
+  writer.AppendUint32(kKeyCode);
+  writer.AppendUint32(kState);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kProcessKeyEventMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kProcessKeyEventMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, CandidateClickedTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  const uint32 kIndex = 4;
+  const IBusEngineHandlerInterface::IBusMouseButton kIBusMouseButton =
+      IBusEngineHandlerInterface::IBUS_MOUSE_BUTTON_MIDDLE;
+  const uint32 kState = 3;
+  EXPECT_CALL(*engine_handler_, CandidateClicked(kIndex, kIBusMouseButton,
+                                                 kState));
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kCandidateClickedMethod);
+  method_call.SetSerial(kSerialNo);
+  dbus::MessageWriter writer(&method_call);
+  writer.AppendUint32(kIndex);
+  writer.AppendUint32(static_cast<uint32>(kIBusMouseButton));
+  writer.AppendUint32(kState);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kCandidateClickedMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kCandidateClickedMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, SetSurroundingTextTest) {
+  // Set expectations.
+  const uint32 kSerialNo = 1;
+  const std::string kText = "Sample Text";
+  const uint32 kCursorPos = 3;
+  const uint32 kAnchorPos = 4;
+  EXPECT_CALL(*engine_handler_, SetSurroundingText(kText, kCursorPos,
+                                                   kAnchorPos));
+  MockResponseSender response_sender;
+  EmptyResponseExpectation response_expectation(kSerialNo);
+  EXPECT_CALL(response_sender, Run(_))
+      .WillOnce(Invoke(&response_expectation,
+                       &EmptyResponseExpectation::Evaluate));
+
+  // Create method call;
+  dbus::MethodCall method_call(ibus::engine::kServiceInterface,
+                               ibus::engine::kSetSurroundingTextMethod);
+  method_call.SetSerial(kSerialNo);
+  dbus::MessageWriter writer(&method_call);
+  writer.AppendString(kText);
+  writer.AppendUint32(kCursorPos);
+  writer.AppendUint32(kAnchorPos);
+
+  // Call exported function.
+  EXPECT_NE(method_callback_map_.find(ibus::engine::kSetSurroundingTextMethod),
+            method_callback_map_.end());
+  method_callback_map_[ibus::engine::kSetSurroundingTextMethod].Run(
+      &method_call,
+      base::Bind(&MockResponseSender::Run,
+                 base::Unretained(&response_sender)));
+}
+
+TEST_F(IBusEngineServiceTest, RegisterProperties) {
+  // Set expetations.
+  ibus::IBusPropertyList property_list;
+  property_list.push_back(new ibus::IBusProperty());
+  property_list[0]->set_key("Sample Key");
+  property_list[0]->set_type(ibus::IBusProperty::IBUS_PROPERTY_TYPE_MENU);
+  property_list[0]->set_label("Sample Label");
+  property_list[0]->set_tooltip("Sample Tooltip");
+  property_list[0]->set_visible(true);
+  property_list[0]->set_checked(true);
+
+  RegisterPropertiesExpectation expectation(property_list);
+  EXPECT_CALL(*mock_exported_object_, SendSignal(_))
+      .WillOnce(Invoke(&expectation,
+                       &RegisterPropertiesExpectation::Evaluate));
+  // Emit signal.
+  service_->RegisterProperties(property_list);
+}
+
+TEST_F(IBusEngineServiceTest, UpdatePreeditTest) {
+  // Set expetations.
+  ibus::IBusText ibus_text;
+  ibus_text.set_text("Sample Text");
+  const uint32 kCursorPos = 9;
+  const bool kIsVisible = false;
+  const IBusEngineService::IBusEnginePreeditFocusOutMode kPreeditMode =
+      IBusEngineService::IBUS_ENGINE_PREEEDIT_FOCUS_OUT_MODE_CLEAR;
+  UpdatePreeditExpectation expectation(ibus_text, kCursorPos, kIsVisible,
+                                       kPreeditMode);
+  EXPECT_CALL(*mock_exported_object_, SendSignal(_))
+      .WillOnce(Invoke(&expectation, &UpdatePreeditExpectation::Evaluate));
+
+  // Emit signal.
+  service_->UpdatePreedit(ibus_text, kCursorPos, kIsVisible, kPreeditMode);
+}
+
+TEST_F(IBusEngineServiceTest, UpdateAuxiliaryText) {
+  ibus::IBusText ibus_text;
+  ibus_text.set_text("Sample Text");
+  const bool kIsVisible = false;
+  UpdateAuxiliaryTextExpectation expectation(ibus_text, kIsVisible);
+
+  EXPECT_CALL(*mock_exported_object_, SendSignal(_))
+      .WillOnce(Invoke(&expectation,
+                       &UpdateAuxiliaryTextExpectation::Evaluate));
+
+  // Emit signal.
+  service_->UpdateAuxiliaryText(ibus_text, kIsVisible);
+}
+
+TEST_F(IBusEngineServiceTest, UpdateLookupTableTest) {
+  ibus::IBusLookupTable lookup_table;
+  lookup_table.set_page_size(10);
+  lookup_table.set_cursor_position(2);
+  lookup_table.set_is_cursor_visible(false);
+  const bool kIsVisible = true;
+
+  UpdateLookupTableExpectation expectation(lookup_table, kIsVisible);
+  EXPECT_CALL(*mock_exported_object_, SendSignal(_))
+      .WillOnce(Invoke(&expectation,
+                       &UpdateLookupTableExpectation::Evaluate));
+
+  // Emit signal.
+  service_->UpdateLookupTable(lookup_table, kIsVisible);
+}
+
+TEST_F(IBusEngineServiceTest, UpdatePropertyTest) {
+  ibus::IBusProperty property;
+  property.set_key("Sample Key");
+  property.set_type(ibus::IBusProperty::IBUS_PROPERTY_TYPE_MENU);
+  property.set_label("Sample Label");
+  property.set_tooltip("Sample Tooltip");
+  property.set_visible(true);
+  property.set_checked(true);
+
+  UpdatePropertyExpectation expectation(property);
+  EXPECT_CALL(*mock_exported_object_, SendSignal(_))
+      .WillOnce(Invoke(&expectation,
+                       &UpdatePropertyExpectation::Evaluate));
+
+  // Emit signal.
+  service_->UpdateProperty(property);
+}
+
+TEST_F(IBusEngineServiceTest, ForwardKeyEventTest) {
+  uint32 keyval = 0x20;
+  uint32 keycode = 0x64;
+  uint32 state = 0x00;
+
+  ForwardKeyEventExpectation expectation(keyval, keycode, state);
+
+  EXPECT_CALL(*mock_exported_object_, SendSignal(_))
+      .WillOnce(Invoke(&expectation,
+                       &ForwardKeyEventExpectation::Evaluate));
+
+  // Emit signal.
+  service_->ForwardKeyEvent(keyval, keycode, state);
+}
+
+TEST_F(IBusEngineServiceTest, RequireSurroundingTextTest) {
+  RequireSurroundingTextExpectation expectation;
+  EXPECT_CALL(*mock_exported_object_, SendSignal(_))
+      .WillOnce(Invoke(&expectation,
+                       &RequireSurroundingTextExpectation::Evaluate));
+
+  // Emit signal.
+  service_->RequireSurroundingText();
+}
+
+
+}  // namespace chromeos