chrome/browser/chromeos/input_method/ refactoring [part 6 of 6]

chrome/browser/chromeos/input_method/input_method_manager_impl_unittest.cc

Index: chrome/browser/chromeos/input_method/input_method_manager_impl_unittest.cc
diff --git a/chrome/browser/chromeos/input_method/input_method_manager_impl_unittest.cc b/chrome/browser/chromeos/input_method/input_method_manager_impl_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..717888e0e9fcb106063eb652246e2b7cffa6fd17
--- /dev/null
+++ b/chrome/browser/chromeos/input_method/input_method_manager_impl_unittest.cc
@@ -0,0 +1,894 @@
+// 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 "chrome/browser/chromeos/input_method/input_method_manager_impl.h"
+
+#include <algorithm>
+
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/chromeos/language_preferences.h"
+#include "chrome/browser/chromeos/input_method/mock_candidate_window.h"
+#include "chrome/browser/chromeos/input_method/mock_ibus_controller.h"
+#include "chrome/browser/chromeos/input_method/mock_xkeyboard.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/accelerators/accelerator.h"
+#include "ui/base/keycodes/keyboard_codes.h"
+
+namespace chromeos {
+
+extern const char* kExtensionImePrefix;
+
+namespace input_method {
+namespace {
+
+class InputMethodManagerImplTest :  public testing::Test {
+ public:
+  InputMethodManagerImplTest()
+      : controller_(NULL),
+        candidate_window_controller_(NULL) {
+  }
+  virtual ~InputMethodManagerImplTest() {}
+
+  virtual void SetUp() {
+    manager_.reset(InputMethodManagerImpl::GetInstanceForTesting());
+    controller_ = new MockIBusController;
+    manager_->SetIBusControllerForTesting(controller_);
+    candidate_window_controller_ = new MockCandidateWindowController;
+    manager_->SetCandidateWindowControllerForTesting(
+        candidate_window_controller_);
+    xkeyboard_ = new MockXKeyboard;
+    manager_->SetXKeyboardForTesting(xkeyboard_);
+  }
+
+  virtual void TearDown() {
+    manager_.reset();
+    controller_ = NULL;
+    candidate_window_controller_ = NULL;
+    xkeyboard_ = NULL;
+  }
+
+  void SetHardwareKeyboardLayout(const std::string& input_method_id) {
+    manager_->GetInputMethodUtil()->SetHardwareInputMethodIdForTesting(
+        input_method_id);
+  }
+
+ protected:
+  scoped_ptr<InputMethodManagerImpl> manager_;
+  MockIBusController* controller_;
+  MockCandidateWindowController* candidate_window_controller_;
+  MockXKeyboard* xkeyboard_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(InputMethodManagerImplTest);
+};
+
+class TestObserver : public InputMethodManager::Observer {
+ public:
+  TestObserver()
+      : input_method_changed_count_(0),
+        input_method_property_changed_count_(0) {
+  }
+  virtual ~TestObserver() {}
+
+  virtual void InputMethodChanged(InputMethodManager* manager) OVERRIDE {
+    ++input_method_changed_count_;
+  }
+  virtual void InputMethodPropertyChanged(
+      InputMethodManager* manager) OVERRIDE {
+    ++input_method_property_changed_count_;
+  }
+
+  int input_method_changed_count_;
+  int input_method_property_changed_count_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestObserver);
+};
+
+class TestCandidateWindowObserver
+    : public InputMethodManager::CandidateWindowObserver {
+ public:
+  TestCandidateWindowObserver()
+      : candidate_window_opened_count_(0),
+        candidate_window_closed_count_(0) {
+  }
+  virtual ~TestCandidateWindowObserver() {}
+
+  virtual void CandidateWindowOpened(InputMethodManager* manager) OVERRIDE {
+    ++candidate_window_opened_count_;
+  }
+  virtual void CandidateWindowClosed(InputMethodManager* manager) OVERRIDE {
+    ++candidate_window_closed_count_;
+  }
+
+  int candidate_window_opened_count_;
+  int candidate_window_closed_count_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestCandidateWindowObserver);
+};
+
+}  // namespace
+
+TEST_F(InputMethodManagerImplTest, TestGetXKeyboard) {
+  EXPECT_TRUE(manager_->GetXKeyboard());
+  EXPECT_EQ(xkeyboard_, manager_->GetXKeyboard());
+}
+
+TEST_F(InputMethodManagerImplTest, TestGetInputMethodUtil) {
+  EXPECT_TRUE(manager_->GetInputMethodUtil());
+  SetHardwareKeyboardLayout("xkb:fr::fra");  // check this does not crash.
+}
+
+TEST_F(InputMethodManagerImplTest, TestCandidateWindowObserver) {
+  TestCandidateWindowObserver observer;
+  candidate_window_controller_->NotifyCandidateWindowOpened();  // nop
+  candidate_window_controller_->NotifyCandidateWindowClosed();  // nop
+  manager_->AddCandidateWindowObserver(&observer);
+  candidate_window_controller_->NotifyCandidateWindowOpened();
+  EXPECT_EQ(1, observer.candidate_window_opened_count_);
+  candidate_window_controller_->NotifyCandidateWindowClosed();
+  EXPECT_EQ(1, observer.candidate_window_closed_count_);
+  candidate_window_controller_->NotifyCandidateWindowOpened();
+  EXPECT_EQ(2, observer.candidate_window_opened_count_);
+  candidate_window_controller_->NotifyCandidateWindowClosed();
+  EXPECT_EQ(2, observer.candidate_window_closed_count_);
+  manager_->RemoveCandidateWindowObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestObserver) {
+  // For http://crbug.com/19655#c11 - (3). browser_state_monitor_unittest.cc is
+  // also for the scenario.
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  EXPECT_EQ(0, observer.input_method_changed_count_);
+  manager_->EnableLayouts("en-US", "xkb:us::eng");
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(1, observer.input_method_property_changed_count_);
+  manager_->ChangeInputMethod("xkb:us:dvorak:eng");
+  EXPECT_EQ(2, observer.input_method_changed_count_);
+  EXPECT_EQ(2, observer.input_method_property_changed_count_);
+  manager_->ChangeInputMethod("xkb:us:dvorak:eng");
+  // The observer is always notified even when the same input method ID is
+  // passed to ChangeInputMethod() more than twice.
+  EXPECT_EQ(3, observer.input_method_changed_count_);
+  EXPECT_EQ(3, observer.input_method_property_changed_count_);
+
+  controller_->NotifyPropertyChangedForTesting();
+  EXPECT_EQ(4, observer.input_method_property_changed_count_);
+  controller_->NotifyPropertyChangedForTesting();
+  EXPECT_EQ(5, observer.input_method_property_changed_count_);
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestGetSupportedInputMethods) {
+  scoped_ptr<InputMethodDescriptors> methods(
+      manager_->GetSupportedInputMethods());
+  ASSERT_TRUE(methods.get());
+  // Try to find random 4-5 layuts and IMEs to make sure the returned list is
+  // correct.
+  const InputMethodDescriptor* id_to_find =
+      manager_->GetInputMethodUtil()->GetInputMethodDescriptorFromId("mozc");
+  EXPECT_NE(methods->end(),
+            std::find(methods->begin(), methods->end(), *id_to_find));
+  id_to_find = manager_->GetInputMethodUtil()->GetInputMethodDescriptorFromId(
+      "mozc-chewing");
+  id_to_find = manager_->GetInputMethodUtil()->GetInputMethodDescriptorFromId(
+      "xkb:us::eng");
+  EXPECT_NE(methods->end(),
+            std::find(methods->begin(), methods->end(), *id_to_find));
+  id_to_find = manager_->GetInputMethodUtil()->GetInputMethodDescriptorFromId(
+      "xkb:us:dvorak:eng");
+  EXPECT_NE(methods->end(),
+            std::find(methods->begin(), methods->end(), *id_to_find));
+  id_to_find = manager_->GetInputMethodUtil()->GetInputMethodDescriptorFromId(
+      "xkb:fr::fra");
+  EXPECT_NE(methods->end(),
+            std::find(methods->begin(), methods->end(), *id_to_find));
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableLayouts) {
+  // Currently 5 keyboard layouts are supported for en-US, and 1 for ja. See
+  // ibus_input_method.txt.
+  manager_->EnableLayouts("en-US", "");
+  EXPECT_EQ(5U, manager_->GetNumActiveInputMethods());
+  {
+    // For http://crbug.com/19655#c11 - (1)
+    scoped_ptr<InputMethodDescriptors> methods(
+        manager_->GetActiveInputMethods());
+    const InputMethodDescriptor* id_to_find =
+        manager_->GetInputMethodUtil()->GetInputMethodDescriptorFromId(
+            "english-m");  // The "English Mystery" IME.
+    EXPECT_EQ(methods->end(),
+              std::find(methods->begin(), methods->end(), *id_to_find));
+  }
+  // For http://crbug.com/19655#c11 - (2)
+  EXPECT_EQ(0, controller_->start_count_);
+
+  // For http://crbug.com/19655#c11 - (5)
+  // The hardware keyboard layout "xkb:us::eng" is always active, hence 2U.
+  manager_->EnableLayouts("ja", "");  // Japanese
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(0, controller_->start_count_);
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableLayoutsNonUsHardwareKeyboard) {
+  // The physical layout is French.
+  SetHardwareKeyboardLayout("xkb:fr::fra");
+  manager_->EnableLayouts("en-US", "");
+  EXPECT_EQ(6U, manager_->GetNumActiveInputMethods());  // 5 + French
+  // The physical layout is Japanese.
+  SetHardwareKeyboardLayout("xkb:jp::jpn");
+  manager_->EnableLayouts("ja", "");
+  // "xkb:us::eng" is not needed, hence 1.
+  EXPECT_EQ(1U, manager_->GetNumActiveInputMethods());
+}
+
+TEST_F(InputMethodManagerImplTest, TestActiveInputMethods) {
+  manager_->EnableLayouts("ko", "");  // Korean
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  scoped_ptr<InputMethodDescriptors> methods(
+      manager_->GetActiveInputMethods());
+  ASSERT_TRUE(methods.get());
+  EXPECT_EQ(2U, methods->size());
+  const InputMethodDescriptor* id_to_find =
+      manager_->GetInputMethodUtil()->GetInputMethodDescriptorFromId(
+          "xkb:us::eng");
+  EXPECT_NE(methods->end(),
+            std::find(methods->begin(), methods->end(), *id_to_find));
+  id_to_find = manager_->GetInputMethodUtil()->GetInputMethodDescriptorFromId(
+      "xkb:kr:kr104:kor");
+  EXPECT_NE(methods->end(),
+            std::find(methods->begin(), methods->end(), *id_to_find));
+}
+
+TEST_F(InputMethodManagerImplTest, TestSetInputMethodConfig) {
+  InputMethodConfigValue config;
+  config.type = InputMethodConfigValue::kValueTypeString;
+  config.string_value = "string";
+  EXPECT_EQ(0, controller_->set_input_method_config_internal_count_);
+  EXPECT_TRUE(manager_->SetInputMethodConfig("section", "name", config));
+  EXPECT_EQ(1, controller_->set_input_method_config_internal_count_);
+  EXPECT_EQ("section",
+            controller_->set_input_method_config_internal_key_.first);
+  EXPECT_EQ("name",
+            controller_->set_input_method_config_internal_key_.second);
+  EXPECT_EQ(config.type,
+            controller_->set_input_method_config_internal_value_.type);
+  EXPECT_EQ(config.string_value,
+            controller_->set_input_method_config_internal_value_.string_value);
+
+  // SetInputMethodConfig should be no-op in STATE_TERMINATING.
+  manager_->SetState(InputMethodManager::STATE_TERMINATING);
+  EXPECT_FALSE(manager_->SetInputMethodConfig("section", "name", config));
+  EXPECT_EQ(1, controller_->set_input_method_config_internal_count_);
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableTwoLayouts) {
+  // For http://crbug.com/19655#c11 - (8), step 6.
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us:dvorak:eng");
+  ids.push_back("xkb:us:colemak:eng");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  // Since all the IDs added avobe are keyboard layouts, Start() should not be
+  // called.
+  EXPECT_EQ(0, controller_->start_count_);
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+  // Disable Dvorak.
+  ids.erase(ids.begin());
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(1U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(2, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0],  // colemak
+            manager_->GetCurrentInputMethod().id());
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableThreeLayouts) {
+  // For http://crbug.com/19655#c11 - (9).
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us::eng");
+  ids.push_back("xkb:us:dvorak:eng");
+  ids.push_back("xkb:us:colemak:eng");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(3U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+  // Switch to Dvorak.
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(2, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[1], manager_->GetCurrentInputMethod().id());
+  // Disable Dvorak.
+  ids.erase(ids.begin() + 1);
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(3, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0],  // US Qwerty
+            manager_->GetCurrentInputMethod().id());
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableLayoutAndIme) {
+  // For http://crbug.com/19655#c11 - (10).
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us:dvorak:eng");
+  ids.push_back("mozc-dv");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(1, controller_->start_count_);
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+
+  // Switch to Mozc
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(2, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[1], manager_->GetCurrentInputMethod().id());
+
+  // Disable Mozc.
+  ids.erase(ids.begin() + 1);
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(1U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+  // Currently, to work around  a crash issue at crosbug.com/27051,
+  // controller_->Stop(); is NOT called when all IMEs are disabled.
+  EXPECT_EQ(0, controller_->stop_count_);
+
+  // However, IME should always be stopped on shutdown.
+  manager_->SetState(InputMethodManager::STATE_TERMINATING);
+  EXPECT_EQ(1, controller_->stop_count_);
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableLayoutAndIme2) {
+  // For http://crbug.com/19655#c11 - (11).
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us:dvorak:eng");
+  ids.push_back("mozc-dv");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(1, controller_->start_count_);
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+
+  // Disable Dvorak.
+  ids.erase(ids.begin());
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(1U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(ids[0],  // Mozc
+            manager_->GetCurrentInputMethod().id());
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableImes) {
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("mozc-chewing");
+  ids.push_back("mozc");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(1, controller_->start_count_);
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableUnknownIds) {
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:tl::tlh");  // Klingon, which is not supported.
+  ids.push_back("unknown-super-cool-ime");
+  EXPECT_FALSE(manager_->EnableInputMethods(ids));
+
+  // TODO(yusukes): Should we fall back to the hardware keyboard layout in this
+  // case?
+  EXPECT_EQ(0, observer.input_method_changed_count_);
+
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableLayoutsThenLock) {
+  // For http://crbug.com/19655#c11 - (14).
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us::eng");
+  ids.push_back("xkb:us:dvorak:eng");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+
+  // Switch to Dvorak.
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(2, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[1], manager_->GetCurrentInputMethod().id());
+
+  // Lock screen
+  manager_->SetState(InputMethodManager::STATE_LOCK_SCREEN);
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(ids[1],  // still Dvorak
+            manager_->GetCurrentInputMethod().id());
+  // Switch back to Qwerty.
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+
+  // Unlock screen. The original state, Dvorak, is restored.
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(ids[1], manager_->GetCurrentInputMethod().id());
+
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableLayoutAndImeThenLock) {
+  // For http://crbug.com/19655#c11 - (15).
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us:dvorak:eng");
+  ids.push_back("mozc-dv");
+  ids.push_back("mozc-chewing");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(3U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+
+  // Switch to Mozc.
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(2, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[1], manager_->GetCurrentInputMethod().id());
+
+  // Lock screen
+  manager_->SetState(InputMethodManager::STATE_LOCK_SCREEN);
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());  // Qwerty+Dvorak.
+  EXPECT_EQ("xkb:us:dvorak:eng",
+            manager_->GetCurrentInputMethod().id());
+  // controller_->Stop() should never be called when the screen is locked even
+  // after crosbug.com/27051 is fixed.
+  EXPECT_EQ(0, controller_->stop_count_);
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ("xkb:us::eng",  // The hardware keyboard layout.
+            manager_->GetCurrentInputMethod().id());
+
+  // Unlock screen. The original state, mozc-dv, is restored.
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  EXPECT_EQ(3U, manager_->GetNumActiveInputMethods());  // Dvorak and 2 IMEs.
+  EXPECT_EQ(ids[1], manager_->GetCurrentInputMethod().id());
+
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestXkbSetting) {
+  // For http://crbug.com/19655#c11 - (8), step 7-11.
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us:dvorak:eng");
+  ids.push_back("xkb:us:colemak:eng");
+  ids.push_back("mozc-jp");
+  ids.push_back("mozc");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(4U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(1, xkeyboard_->set_current_keyboard_layout_by_name_count_);
+  // See input_methods.txt for an expected XKB layout name.
+  EXPECT_EQ("us(dvorak)", xkeyboard_->last_layout_);
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(2, xkeyboard_->set_current_keyboard_layout_by_name_count_);
+  EXPECT_EQ("us(colemak)", xkeyboard_->last_layout_);
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(3, xkeyboard_->set_current_keyboard_layout_by_name_count_);
+  EXPECT_EQ("jp", xkeyboard_->last_layout_);
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(4, xkeyboard_->set_current_keyboard_layout_by_name_count_);
+  EXPECT_EQ("us", xkeyboard_->last_layout_);
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(5, xkeyboard_->set_current_keyboard_layout_by_name_count_);
+  EXPECT_EQ("us(dvorak)", xkeyboard_->last_layout_);
+  // Disable Dvorak.
+  ids.erase(ids.begin());
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(3U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(6, xkeyboard_->set_current_keyboard_layout_by_name_count_);
+  EXPECT_EQ("us(colemak)", xkeyboard_->last_layout_);
+}
+
+TEST_F(InputMethodManagerImplTest, TestActivateInputMethodProperty) {
+  manager_->ActivateInputMethodProperty("key");
+  EXPECT_EQ(1, controller_->activate_input_method_property_count_);
+  EXPECT_EQ("key", controller_->activate_input_method_property_key_);
+  manager_->ActivateInputMethodProperty("key2");
+  EXPECT_EQ(2, controller_->activate_input_method_property_count_);
+  EXPECT_EQ("key2", controller_->activate_input_method_property_key_);
+}
+
+TEST_F(InputMethodManagerImplTest, TestGetCurrentInputMethodProperties) {
+  EXPECT_TRUE(manager_->GetCurrentInputMethodProperties().empty());
+
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us::eng");
+  ids.push_back("mozc");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_TRUE(manager_->GetCurrentInputMethodProperties().empty());
+  manager_->ChangeInputMethod("mozc");
+
+  InputMethodPropertyList current_property_list;
+  current_property_list.push_back(InputMethodProperty("key",
+                                                      "label",
+                                                      false,
+                                                      false,
+                                                      -1));
+  controller_->SetCurrentPropertiesForTesting(current_property_list);
+  controller_->NotifyPropertyChangedForTesting();
+
+  ASSERT_EQ(1U, manager_->GetCurrentInputMethodProperties().size());
+  EXPECT_EQ("key", manager_->GetCurrentInputMethodProperties().at(0).key);
+
+  manager_->ChangeInputMethod("xkb:us::eng");
+  EXPECT_TRUE(manager_->GetCurrentInputMethodProperties().empty());
+
+  // Delayed asynchronous property update signal from the Mozc IME.
+  controller_->NotifyPropertyChangedForTesting();
+  // When XKB layout is in use, GetCurrentInputMethodProperties() should always
+  // return an empty list.
+  EXPECT_TRUE(manager_->GetCurrentInputMethodProperties().empty());
+}
+
+TEST_F(InputMethodManagerImplTest, TestGetCurrentInputMethodPropertiesTwoImes) {
+  EXPECT_TRUE(manager_->GetCurrentInputMethodProperties().empty());
+
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("mozc");  // Japanese
+  ids.push_back("mozc-chewing");  // T-Chinese
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_TRUE(manager_->GetCurrentInputMethodProperties().empty());
+
+  InputMethodPropertyList current_property_list;
+  current_property_list.push_back(InputMethodProperty("key-mozc",
+                                                      "label",
+                                                      false,
+                                                      false,
+                                                      -1));
+  controller_->SetCurrentPropertiesForTesting(current_property_list);
+  controller_->NotifyPropertyChangedForTesting();
+
+  ASSERT_EQ(1U, manager_->GetCurrentInputMethodProperties().size());
+  EXPECT_EQ("key-mozc", manager_->GetCurrentInputMethodProperties().at(0).key);
+
+  manager_->ChangeInputMethod("mozc-chewing");
+  // Since the IME is changed, the property for mozc Japanese should be hidden.
+  EXPECT_TRUE(manager_->GetCurrentInputMethodProperties().empty());
+
+  // Asynchronous property update signal from mozc-chewing.
+  current_property_list.clear();
+  current_property_list.push_back(InputMethodProperty("key-chewing",
+                                                      "label",
+                                                      false,
+                                                      false,
+                                                      -1));
+  controller_->SetCurrentPropertiesForTesting(current_property_list);
+  controller_->NotifyPropertyChangedForTesting();
+  ASSERT_EQ(1U, manager_->GetCurrentInputMethodProperties().size());
+  EXPECT_EQ("key-chewing",
+            manager_->GetCurrentInputMethodProperties().at(0).key);
+}
+
+TEST_F(InputMethodManagerImplTest, TestNextInputMethod) {
+  // For http://crbug.com/19655#c11 - (1)
+  manager_->EnableLayouts("en-US", "xkb:us::eng");
+  EXPECT_EQ(5U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ("xkb:us:intl:eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ("xkb:us:altgr-intl:eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ("xkb:us:dvorak:eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ("xkb:us:colemak:eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+}
+
+TEST_F(InputMethodManagerImplTest, TestPreviousInputMethod) {
+  manager_->EnableLayouts("en-US", "xkb:us::eng");
+  EXPECT_EQ(5U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ("xkb:us:intl:eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToPreviousInputMethod();
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToPreviousInputMethod();
+  EXPECT_EQ("xkb:us:intl:eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToPreviousInputMethod();
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ("xkb:us:intl:eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ("xkb:us:altgr-intl:eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToPreviousInputMethod();
+  EXPECT_EQ("xkb:us:intl:eng", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToPreviousInputMethod();
+  EXPECT_EQ("xkb:us:altgr-intl:eng", manager_->GetCurrentInputMethod().id());
+}
+
+TEST_F(InputMethodManagerImplTest, TestSwitchInputMethodWithUsLayouts) {
+  manager_->EnableLayouts("en-US", "xkb:us::eng");
+  EXPECT_EQ(5U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+
+  // Henkan, Muhenkan, ZenkakuHankaku should be ignored when no Japanese IMEs
+  // and keyboards are enabled.
+  EXPECT_FALSE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_CONVERT, false, false, false)));
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_FALSE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_NONCONVERT, false, false, false)));
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_FALSE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_DBE_SBCSCHAR, false, false, false)));
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_FALSE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_DBE_DBCSCHAR, false, false, false)));
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+
+  // Do the same tests for Korean.
+  EXPECT_FALSE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_HANGUL, false, false, false)));
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_FALSE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_SPACE, true, false, false)));
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+}
+
+TEST_F(InputMethodManagerImplTest, TestSwitchInputMethodWithJpLayout) {
+  // Enable "xkb:jp::jpn" and press Muhenkan/ZenkakuHankaku.
+  manager_->EnableLayouts("ja", "xkb:us::eng");
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_NONCONVERT, false, false, false)));
+  EXPECT_EQ("xkb:jp::jpn", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToPreviousInputMethod();
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_DBE_SBCSCHAR, false, false, false)));
+  EXPECT_EQ("xkb:jp::jpn", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToPreviousInputMethod();
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_DBE_DBCSCHAR, false, false, false)));
+  EXPECT_EQ("xkb:jp::jpn", manager_->GetCurrentInputMethod().id());
+}
+
+TEST_F(InputMethodManagerImplTest, TestSwitchInputMethodWithKoLayout) {
+  // Do the same tests for Korean.
+  manager_->EnableLayouts("ko", "xkb:us::eng");
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_HANGUL, false, false, false)));
+  EXPECT_EQ("xkb:kr:kr104:kor", manager_->GetCurrentInputMethod().id());
+  manager_->SwitchToPreviousInputMethod();
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_SPACE, true, false, false)));
+  EXPECT_EQ("xkb:kr:kr104:kor", manager_->GetCurrentInputMethod().id());
+}
+
+TEST_F(InputMethodManagerImplTest, TestSwitchInputMethodWithJpIme) {
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:jp::jpn");
+  ids.push_back("mozc-jp");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ("xkb:jp::jpn", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_DBE_DBCSCHAR, false, false, false)));
+  EXPECT_EQ("mozc-jp", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_DBE_DBCSCHAR, false, false, false)));
+  EXPECT_EQ("xkb:jp::jpn", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_CONVERT, false, false, false)));
+  EXPECT_EQ("mozc-jp", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_CONVERT, false, false, false)));
+  EXPECT_EQ("mozc-jp", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_NONCONVERT, false, false, false)));
+  EXPECT_EQ("xkb:jp::jpn", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_NONCONVERT, false, false, false)));
+  EXPECT_EQ("xkb:jp::jpn", manager_->GetCurrentInputMethod().id());
+
+  // Add Dvorak.
+  ids.push_back("xkb:us:dvorak:eng");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ("xkb:jp::jpn", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_DBE_SBCSCHAR, false, false, false)));
+  EXPECT_EQ("mozc-jp", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_DBE_SBCSCHAR, false, false, false)));
+  EXPECT_EQ("xkb:jp::jpn", manager_->GetCurrentInputMethod().id());
+}
+
+TEST_F(InputMethodManagerImplTest, TestSwitchInputMethodWithKoIme) {
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:kr:kr104:kor");
+  ids.push_back("mozc-hangul");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ("xkb:kr:kr104:kor", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_HANGUL, false, false, false)));
+  EXPECT_EQ("mozc-hangul", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_HANGUL, false, false, false)));
+  EXPECT_EQ("xkb:kr:kr104:kor", manager_->GetCurrentInputMethod().id());
+
+  // Add Dvorak.
+  ids.push_back("xkb:us:dvorak:eng");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ("xkb:kr:kr104:kor", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_SPACE, true, false, false)));
+  EXPECT_EQ("mozc-hangul", manager_->GetCurrentInputMethod().id());
+  EXPECT_TRUE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_SPACE, true, false, false)));
+  EXPECT_EQ("xkb:kr:kr104:kor", manager_->GetCurrentInputMethod().id());
+}
+
+TEST_F(InputMethodManagerImplTest, TestEnableDisableHotkeys) {
+  manager_->EnableLayouts("ja", "xkb:us::eng");
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  manager_->DisableHotkeys();
+  EXPECT_FALSE(manager_->SwitchToNextInputMethod());
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_FALSE(manager_->SwitchToPreviousInputMethod());
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  EXPECT_FALSE(manager_->SwitchInputMethod(
+      ui::Accelerator(ui::VKEY_NONCONVERT, false, false, false)));
+  EXPECT_EQ("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+  manager_->EnableHotkeys();
+  EXPECT_TRUE(manager_->SwitchToNextInputMethod());
+  EXPECT_NE("xkb:us::eng", manager_->GetCurrentInputMethod().id());
+}
+
+TEST_F(InputMethodManagerImplTest, TestAddRemoveExtensionInputMethods) {
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us:dvorak:eng");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(1U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(0, controller_->start_count_);
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0],
+            manager_->GetCurrentInputMethod().id());
+
+  // Add two Extension IMEs.
+  std::vector<std::string> layouts;
+  layouts.push_back("us");
+  manager_->AddInputMethodExtension(
+      std::string(kExtensionImePrefix) + "deadbeef",
+      "deadbeef input method",
+      layouts,
+      "en-US");
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(1, controller_->start_count_);  // should be started.
+  {
+    scoped_ptr<InputMethodDescriptors> methods(
+        manager_->GetActiveInputMethods());
+    ASSERT_EQ(2U, methods->size());
+    EXPECT_EQ(std::string(kExtensionImePrefix) + "deadbeef",
+              // Ext IMEs should be at the end of the list.
+              methods->at(1).id());
+  }
+  manager_->AddInputMethodExtension(
+      std::string(kExtensionImePrefix) + "cafebabe",
+      "cafebabe input method",
+      layouts,
+      "en-US");
+  EXPECT_EQ(3U, manager_->GetNumActiveInputMethods());
+  {
+    scoped_ptr<InputMethodDescriptors> methods(
+        manager_->GetActiveInputMethods());
+    ASSERT_EQ(3U, methods->size());
+    EXPECT_EQ(std::string(kExtensionImePrefix) + "deadbeef",
+              // Ext IMEs should be at the end of the list.
+              methods->at(1).id());
+  }
+
+  // Remove them.
+  manager_->RemoveInputMethodExtension(
+      std::string(kExtensionImePrefix) + "deadbeef");
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  manager_->RemoveInputMethodExtension(
+      std::string(kExtensionImePrefix) + "cafebabe");
+  EXPECT_EQ(1U, manager_->GetNumActiveInputMethods());
+  // Currently, to work around  a crash issue at crosbug.com/27051,
+  // controller_->Stop(); is NOT called when all (extension) IMEs are disabled.
+  EXPECT_EQ(0, controller_->stop_count_);
+
+  manager_->RemoveObserver(&observer);
+}
+
+TEST_F(InputMethodManagerImplTest, TestAddExtensionInputThenLockScreen) {
+  TestObserver observer;
+  manager_->AddObserver(&observer);
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us::eng");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(1U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+  EXPECT_EQ(ids[0], manager_->GetCurrentInputMethod().id());
+
+  // Add an Extension IME.
+  std::vector<std::string> layouts;
+  layouts.push_back("us");
+  manager_->AddInputMethodExtension(
+      std::string(kExtensionImePrefix) + "deadbeef",
+      "deadbeef input method",
+      layouts,
+      "en-US");
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(1, observer.input_method_changed_count_);
+
+  // Switch to the IME.
+  manager_->SwitchToNextInputMethod();
+  EXPECT_EQ(2, observer.input_method_changed_count_);
+  EXPECT_EQ(std::string(kExtensionImePrefix) + "deadbeef",
+            manager_->GetCurrentInputMethod().id());
+
+  // Lock the screen. This is for crosbug.com/27049.
+  manager_->SetState(InputMethodManager::STATE_LOCK_SCREEN);
+  EXPECT_EQ(1U, manager_->GetNumActiveInputMethods());  // Qwerty. No Ext. IME
+  EXPECT_EQ("xkb:us::eng",
+            manager_->GetCurrentInputMethod().id());
+  EXPECT_EQ(0, controller_->stop_count_);
+
+  // Unlock the screen.
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(std::string(kExtensionImePrefix) + "deadbeef",
+            manager_->GetCurrentInputMethod().id());
+  {
+    // This is for crosbug.com/27052.
+    scoped_ptr<InputMethodDescriptors> methods(
+        manager_->GetActiveInputMethods());
+    ASSERT_EQ(2U, methods->size());
+    EXPECT_EQ(std::string(kExtensionImePrefix) + "deadbeef",
+              // Ext. IMEs should be at the end of the list.
+              methods->at(1).id());
+  }
+  manager_->RemoveObserver(&observer);
+}
+
+}  // namespace input_method
+}  // namespace chromeos