Focus launcher if spoken feedback is enabled and no other windows visible.

ash/wm/ash_activation_controller_unittest.cc

Index: ash/wm/ash_activation_controller_unittest.cc
diff --git a/ash/wm/ash_activation_controller_unittest.cc b/ash/wm/ash_activation_controller_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f4d7089612abb011f5f15f22ef8f5622b623272b
--- /dev/null
+++ b/ash/wm/ash_activation_controller_unittest.cc
@@ -0,0 +1,158 @@
+// 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 "ash/wm/ash_activation_controller.h"
+
+#include "ash/launcher/launcher.h"
+#include "ash/root_window_controller.h"
+#include "ash/shell_delegate.h"
+#include "ash/test/ash_test_base.h"
+#include "ash/wm/property_util.h"
+#include "ash/wm/window_util.h"
+#include "ui/aura/window.h"
+
+namespace ash {
+
+namespace wm {
+
+namespace {
+
+class AshActivationControllerTest : public test::AshTestBase {
+ public:
+  AshActivationControllerTest()
+      : launcher_(NULL), launcher_widget_(NULL), launcher_window_(NULL) {}
+  virtual ~AshActivationControllerTest() {}
+
+  virtual void SetUp() OVERRIDE {
+    test::AshTestBase::SetUp();
+    ash_activation_controller_.reset(new internal::AshActivationController());
+    launcher_ = Launcher::ForPrimaryDisplay();
+    ASSERT_TRUE(launcher_);
+    launcher_widget_ = launcher_->widget();
+    ASSERT_TRUE(launcher_widget_);
+    launcher_window_ = launcher_widget_->GetNativeWindow();
+    ASSERT_TRUE(launcher_window_);
+  }
+
+  void SetSpokenFeedbackState(bool enabled) {
+    if (Shell::GetInstance()->delegate()->IsSpokenFeedbackEnabled() !=
+        enabled) {
+      Shell::GetInstance()->delegate()->ToggleSpokenFeedback(
+          A11Y_NOTIFICATION_NONE);
+    }
+  }
+
+ protected:
+  scoped_ptr<internal::ActivationControllerDelegate> ash_activation_controller_;
+  ash::Launcher* launcher_;
+  views::Widget* launcher_widget_;
+  aura::Window* launcher_window_;
+
+  DISALLOW_COPY_AND_ASSIGN(AshActivationControllerTest);
+};
+
+TEST_F(AshActivationControllerTest, LauncherFallback) {
+  // When spoken feedback is disabled, then fallback should not occur.
+  {
+    SetSpokenFeedbackState(false);
+    aura::Window* result = ash_activation_controller_->WillActivateWindow(NULL);
+    EXPECT_EQ(NULL, result);
+  }
+
+  // When spoken feedback is enabled, then fallback should occur.
+  {
+    SetSpokenFeedbackState(true);
+    aura::Window* result = ash_activation_controller_->WillActivateWindow(NULL);
+    EXPECT_EQ(launcher_window_, result);
+  }
+
+  // No fallback when activating another window.
+  {
+    aura::Window* test_window = CreateTestWindowInShellWithId(0);
+    aura::Window* result = ash_activation_controller_->
+        WillActivateWindow(test_window);
+    EXPECT_EQ(test_window, result);
+  }
+}
+
+TEST_F(AshActivationControllerTest, LauncherFallbackOnShutdown) {
+  SetSpokenFeedbackState(true);
+  // While shutting down a root window controller, activation controller
+  // is notified about destroyed windows and therefore will try to activate
+  // a launcher as fallback, which would result in segmentation faults since
+  // the launcher's window or the workspace's controller may be already
+  // destroyed.
+  GetRootWindowController(Shell::GetActiveRootWindow())->CloseChildWindows();
+
+  aura::Window* result = ash_activation_controller_->WillActivateWindow(NULL);
+  EXPECT_EQ(NULL, result);
+}
+
+TEST_F(AshActivationControllerTest, LauncherEndToEndFallbackOnDestroyTest) {
+  // This test checks the whole fallback activation flow.
+  SetSpokenFeedbackState(true);
+
+  scoped_ptr<aura::Window> test_window(CreateTestWindowInShellWithId(0));
+  ActivateWindow(test_window.get());
+  ASSERT_EQ(test_window.get(), GetActiveWindow());
+
+  // Close the window.
+  test_window.reset();
+
+  // Verify if the launcher got activated as fallback.
+  ASSERT_EQ(launcher_window_, GetActiveWindow());
+}
+
+TEST_F(AshActivationControllerTest, LauncherEndToEndFallbackOnMinimizeTest) {
+  // This test checks the whole fallback activation flow.
+  SetSpokenFeedbackState(true);
+
+  scoped_ptr<aura::Window> test_window(CreateTestWindowInShellWithId(0));
+  ActivateWindow(test_window.get());
+  ASSERT_EQ(test_window.get(), GetActiveWindow());
+
+  // Minimize the window.
+  MinimizeWindow(test_window.get());
+
+  // Verify if the launcher got activated as fallback.
+  ASSERT_EQ(launcher_window_, GetActiveWindow());
+}
+
+TEST_F(AshActivationControllerTest, LauncherEndToEndNoFallbackOnDestroyTest) {
+  // This test checks the whole fallback activation flow when spoken feedback
+  // is disabled.
+  SetSpokenFeedbackState(false);
+
+  scoped_ptr<aura::Window> test_window(CreateTestWindowInShellWithId(0));
+  ActivateWindow(test_window.get());
+  ASSERT_EQ(test_window.get(), GetActiveWindow());
+
+  // Close the window.
+  test_window.reset();
+
+  // Verify if the launcher didn't get activated as fallback.
+  ASSERT_NE(launcher_window_, GetActiveWindow());
+}
+
+TEST_F(AshActivationControllerTest, LauncherEndToEndNoFallbackOnMinimizeTest) {
+  // This test checks the whole fallback activation flow when spoken feedback
+  // is disabled.
+  SetSpokenFeedbackState(false);
+
+  scoped_ptr<aura::Window> test_window(CreateTestWindowInShellWithId(0));
+  ActivateWindow(test_window.get());
+  ASSERT_EQ(test_window.get(), GetActiveWindow());
+
+  // Minimize the window.
+  MinimizeWindow(test_window.get());
+
+  // Verify if the launcher didn't get activated as fallback.
+  ASSERT_NE(launcher_window_, GetActiveWindow());
+}
+
+}  // namespace
+
+}  // namespace wm
+
+}  // namespace ash