Creates notifications for display resolution change.

ash/display/resolution_notification_controller_unittest.cc

Index: ash/display/resolution_notification_controller_unittest.cc
diff --git a/ash/display/resolution_notification_controller_unittest.cc b/ash/display/resolution_notification_controller_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e0c587242e13982dda8320894d62580ecdd394d5
--- /dev/null
+++ b/ash/display/resolution_notification_controller_unittest.cc
@@ -0,0 +1,209 @@
+// Copyright 2013 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/display/resolution_notification_controller.h"
+
+#include "ash/display/display_manager.h"
+#include "ash/screen_ash.h"
+#include "ash/shell.h"
+#include "ash/test/ash_test_base.h"
+#include "base/bind.h"
+#include "ui/gfx/size.h"
+#include "ui/message_center/message_center.h"
+
+namespace ash {
+namespace internal {
+
+class ResolutionNotificationControllerTest : public ash::test::AshTestBase {
+ public:
+  ResolutionNotificationControllerTest()
+      : accept_count_(0) {
+  }
+
+  virtual ~ResolutionNotificationControllerTest() {}
+
+ protected:
+  virtual void SetUp() OVERRIDE {
+    ash::test::AshTestBase::SetUp();
+    ResolutionNotificationController::SuppressTimerForTest();
+  }
+
+  void SetDisplayResolutionAndNotify(const gfx::Display& display,
+                                     const gfx::Size& new_resolution) {
+    DisplayManager* display_manager = Shell::GetInstance()->display_manager();
+    const DisplayInfo& info = display_manager->GetDisplayInfo(display.id());
+    Shell::GetInstance()->resolution_notification_controller()->
+        SetDisplayResolutionAndNotify(
+            display.id(),
+            info.size_in_pixel(),
+            new_resolution,
+            base::Bind(&ResolutionNotificationControllerTest::OnAccepted,
+                       base::Unretained(this)));
+
+    // OnConfigurationChanged event won't be emitted in the test environment,
+    // so invoke UpdateDisplay() to emit that event explicitly.
+    std::string display_spec;
+    for (size_t i = 0; i < display_manager->GetNumDisplays(); ++i) {
+      if (i > 0)
+        display_spec.append(",");
+      int64 id = display_manager->GetDisplayAt(i).id();
+      gfx::Size size = (display.id() == id) ?
+          new_resolution : display_manager->GetDisplayInfo(id).size_in_pixel();
+      display_spec.append(size.ToString());
+    }
+    UpdateDisplay(display_spec);
+    RunAllPendingInMessageLoop();
+  }
+
+  void ClickOnNotificationButton(int index) {
+    message_center::MessageCenter::Get()->ClickOnNotificationButton(
+        ResolutionNotificationController::kNotificationId, index);
+  }
+
+  bool IsNotificationVisible() {
+    return message_center::MessageCenter::Get()->HasNotification(
+        ResolutionNotificationController::kNotificationId);
+  }
+
+  void TickTimer() {
+    controller()->OnTimerTick();
+  }
+
+  ResolutionNotificationController* controller() {
+    return Shell::GetInstance()->resolution_notification_controller();
+  }
+
+  int accept_count() const {
+    return accept_count_;
+  }
+
+ private:
+  void OnAccepted() {
+    EXPECT_FALSE(controller()->DoesNotificationTimeout());
+    accept_count_++;
+  }
+
+  int accept_count_;
+
+  DISALLOW_COPY_AND_ASSIGN(ResolutionNotificationControllerTest);
+};
+
+// Basic behaviors and verifies it doesn't cause crashes.
+TEST_F(ResolutionNotificationControllerTest, Basic) {
+  if (!SupportsMultipleDisplays())
+    return;
+
+  UpdateDisplay("100x100,150x150");
+  int64 id2 = ash::ScreenAsh::GetSecondaryDisplay().id();
+  ash::internal::DisplayManager* display_manager =
+      ash::Shell::GetInstance()->display_manager();
+  ASSERT_EQ(0, accept_count());
+  EXPECT_FALSE(IsNotificationVisible());
+
+  // Changes the resolution and apply the result.
+  SetDisplayResolutionAndNotify(
+      ScreenAsh::GetSecondaryDisplay(), gfx::Size(200, 200));
+  EXPECT_TRUE(IsNotificationVisible());
+  EXPECT_FALSE(controller()->DoesNotificationTimeout());
+  gfx::Size resolution;
+  EXPECT_TRUE(
+      display_manager->GetSelectedResolutionForDisplayId(id2, &resolution));
+  EXPECT_EQ("200x200", resolution.ToString());
+
+  // Click the revert button, which reverts the resolution.
+  ClickOnNotificationButton(0);
+  RunAllPendingInMessageLoop();
+  EXPECT_FALSE(IsNotificationVisible());
+  EXPECT_EQ(0, accept_count());
+  EXPECT_TRUE(
+      display_manager->GetSelectedResolutionForDisplayId(id2, &resolution));
+  EXPECT_EQ("150x150", resolution.ToString());
+}
+
+TEST_F(ResolutionNotificationControllerTest, AcceptButton) {
+  if (!SupportsMultipleDisplays())
+    return;
+
+  ash::internal::DisplayManager* display_manager =
+      ash::Shell::GetInstance()->display_manager();
+
+  UpdateDisplay("100x100");
+  const gfx::Display& display = ash::Shell::GetScreen()->GetPrimaryDisplay();
+  SetDisplayResolutionAndNotify(display, gfx::Size(200, 200));
+  EXPECT_TRUE(IsNotificationVisible());
+
+  // If there's a single display only, it will have timeout and the first button
+  // becomes accept.
+  EXPECT_TRUE(controller()->DoesNotificationTimeout());
+  ClickOnNotificationButton(0);
+  EXPECT_FALSE(IsNotificationVisible());
+  EXPECT_EQ(1, accept_count());
+  gfx::Size resolution;
+  EXPECT_TRUE(display_manager->GetSelectedResolutionForDisplayId(
+      display.id(), &resolution));
+  EXPECT_EQ("200x200", resolution.ToString());
+
+  // In that case the second button is revert.
+  UpdateDisplay("100x100");
+  SetDisplayResolutionAndNotify(display, gfx::Size(200, 200));
+  EXPECT_TRUE(IsNotificationVisible());
+
+  EXPECT_TRUE(controller()->DoesNotificationTimeout());
+  ClickOnNotificationButton(1);
+  EXPECT_FALSE(IsNotificationVisible());
+  EXPECT_EQ(1, accept_count());
+  EXPECT_TRUE(display_manager->GetSelectedResolutionForDisplayId(
+      display.id(), &resolution));
+  EXPECT_EQ("100x100", resolution.ToString());
+}
+
+TEST_F(ResolutionNotificationControllerTest, Timeout) {
+  if (!SupportsMultipleDisplays())
+    return;
+
+  UpdateDisplay("100x100");
+  const gfx::Display& display = ash::Shell::GetScreen()->GetPrimaryDisplay();
+  SetDisplayResolutionAndNotify(display, gfx::Size(200, 200));
+
+  for (int i = 0; i < ResolutionNotificationController::kTimeoutInSec; ++i) {
+    EXPECT_TRUE(IsNotificationVisible()) << "notification is closed after "
+                                         << i << "-th timer tick";
+    TickTimer();
+    RunAllPendingInMessageLoop();
+  }
+  EXPECT_FALSE(IsNotificationVisible());
+  EXPECT_EQ(0, accept_count());
+  gfx::Size resolution;
+  ash::internal::DisplayManager* display_manager =
+      ash::Shell::GetInstance()->display_manager();
+  EXPECT_TRUE(display_manager->GetSelectedResolutionForDisplayId(
+      display.id(), &resolution));
+  EXPECT_EQ("100x100", resolution.ToString());
+}
+
+TEST_F(ResolutionNotificationControllerTest, DisplayDisconnected) {
+  if (!SupportsMultipleDisplays())
+    return;
+
+  UpdateDisplay("100x100,150x150");
+  int64 id2 = ash::ScreenAsh::GetSecondaryDisplay().id();
+  ash::internal::DisplayManager* display_manager =
+      ash::Shell::GetInstance()->display_manager();
+  SetDisplayResolutionAndNotify(
+      ScreenAsh::GetSecondaryDisplay(), gfx::Size(200, 200));
+  ASSERT_TRUE(IsNotificationVisible());
+
+  // Disconnects the secondary display and verifies it doesn't cause crashes.
+  UpdateDisplay("100x100");
+  RunAllPendingInMessageLoop();
+  EXPECT_FALSE(IsNotificationVisible());
+  EXPECT_EQ(1, accept_count());
+  gfx::Size resolution;
+  EXPECT_TRUE(
+      display_manager->GetSelectedResolutionForDisplayId(id2, &resolution));
+  EXPECT_EQ("200x200", resolution.ToString());
+}
+
+}  // namespace internal
+}  // namespace ash