Attempting to reland the Overview Button Change.

ash/system/overview/overview_button_tray_unittest.cc

Index: ash/system/overview/overview_button_tray_unittest.cc
diff --git a/ash/system/overview/overview_button_tray_unittest.cc b/ash/system/overview/overview_button_tray_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..201fd1dd5bd6ecb354264ee2eb5eeb7667a3c28a
--- /dev/null
+++ b/ash/system/overview/overview_button_tray_unittest.cc
@@ -0,0 +1,121 @@
+// Copyright 2014 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/system/overview/overview_button_tray.h"
+
+#include "ash/display/display_manager.h"
+#include "ash/root_window_controller.h"
+#include "ash/shelf/shelf_types.h"
+#include "ash/shelf/shelf_widget.h"
+#include "ash/shell.h"
+#include "ash/system/status_area_widget.h"
+#include "ash/test/ash_test_base.h"
+#include "ash/wm/overview/window_selector_controller.h"
+#include "base/time/time.h"
+#include "ui/events/event.h"
+#include "ui/events/event_constants.h"
+#include "ui/events/gestures/gesture_types.h"
+#include "ui/views/controls/image_view.h"
+
+namespace ash {
+
+namespace {
+
+OverviewButtonTray* GetTray() {
+  return Shell::GetPrimaryRootWindowController()->shelf()->
+      status_area_widget()->overview_button_tray();
+}
+
+OverviewButtonTray* GetSecondaryTray() {
+  internal::RootWindowController* primary_controller =
+      Shell::GetPrimaryRootWindowController();
+  Shell::RootWindowControllerList controllers =
+      Shell::GetAllRootWindowControllers();
+  for (size_t i = 0; i < controllers.size(); ++i) {
+    if (controllers[i] != primary_controller) {
+      return controllers[i]->shelf()->
+          status_area_widget()->overview_button_tray();
+    }
+  }
+
+  return NULL;
+}
+
+}  // namespace
+
+class OverviewButtonTrayTest : public test::AshTestBase {
+ public:
+  OverviewButtonTrayTest() {}
+  virtual ~OverviewButtonTrayTest() {}
+
+ protected:
+  views::ImageView* GetImageView(OverviewButtonTray* tray) {
+    return tray->icon_;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(OverviewButtonTrayTest);
+};
+
+// Ensures that creation doesn't cause any crashes and adds the image icon.
+TEST_F(OverviewButtonTrayTest, BasicConstruction) {
+  EXPECT_TRUE(GetImageView(GetTray()) != NULL);
+}
+
+// Test that maximize mode toggle changes visibility.
+// OverviewButtonTray should only be visible when MaximizeMode is enabled.
+// By default the system should not have MaximizeMode enabled.
+TEST_F(OverviewButtonTrayTest, MaximizeModeObserverOnMaximizeModeToggled) {
+  ASSERT_FALSE(GetTray()->visible());
+  Shell::GetInstance()->EnableMaximizeModeWindowManager(true);
+  EXPECT_TRUE(GetTray()->visible());
+
+  Shell::GetInstance()->EnableMaximizeModeWindowManager(false);
+  EXPECT_FALSE(GetTray()->visible());
+}
+
+// Tests that activating this control brings up window selection mode.
+TEST_F(OverviewButtonTrayTest, PerformAction) {
+  ASSERT_FALSE(Shell::GetInstance()->window_selector_controller()->
+      IsSelecting());
+
+  // Overview Mode only works when there is a window
+  scoped_ptr<aura::Window> window(
+      CreateTestWindowInShellWithBounds(gfx::Rect(5, 5, 20, 20)));
+  ui::GestureEvent tap(ui::ET_GESTURE_TAP, 0, 0, 0, base::TimeDelta(),
+      ui::GestureEventDetails(ui::ET_GESTURE_TAP, 0.0f, 0.0f), 0);
+  GetTray()->PerformAction(tap);
+  EXPECT_TRUE(Shell::GetInstance()->window_selector_controller()->
+      IsSelecting());
+}
+
+// Tests that a second OverviewButtonTray has been created, and only shows
+// when MaximizeMode has been enabled,  when we are using multiple displays.
+// By default the DisplayManger is in extended mode.
+TEST_F(OverviewButtonTrayTest, DisplaysOnBothDisplays) {
+  if (!SupportsMultipleDisplays())
+    return;
+
+  UpdateDisplay("400x400,200x200");
+  EXPECT_FALSE(GetTray()->visible());
+  EXPECT_FALSE(GetSecondaryTray()->visible());
+  Shell::GetInstance()->EnableMaximizeModeWindowManager(true);
+  EXPECT_TRUE(GetTray()->visible());
+  EXPECT_TRUE(GetSecondaryTray()->visible());
+  Shell::GetInstance()->EnableMaximizeModeWindowManager(false);
+}
+
+// Tests if Maximize Mode is enabled before a secondary display is attached
+// that the second OverviewButtonTray should be created in a visible state.
+TEST_F(OverviewButtonTrayTest, SecondaryTrayCreatedVisible) {
+  if (!SupportsMultipleDisplays())
+    return;
+
+  Shell::GetInstance()->EnableMaximizeModeWindowManager(true);
+  UpdateDisplay("400x400,200x200");
+  EXPECT_TRUE(GetSecondaryTray()->visible());
+  Shell::GetInstance()->EnableMaximizeModeWindowManager(false);
+}
+
+}  // namespace ash