chrome/browser/ui/panels/panel_mouse_watcher_unittest.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/memory/scoped_ptr.h"
   6 #include "base/message_loop/message_loop.h"
   7 #include "chrome/browser/ui/panels/panel_mouse_watcher.h"
   8 #include "chrome/browser/ui/panels/panel_mouse_watcher_observer.h"
   9 #include "testing/gtest/include/gtest/gtest.h"
  10 #include "ui/gfx/point.h"
  11
  12 class TestMouseObserver : public PanelMouseWatcherObserver {
  13  public:
  14   TestMouseObserver() : mouse_movements_(0) {}
  15   // Overridden from PanelMouseWatcherObserver:
  16   void OnMouseMove(const gfx::Point& mouse_position) override {
  17     ++mouse_movements_;
  18   }
  19   int mouse_movements_;
  20 };
  21
  22 class PanelMouseWatcherTest : public testing::Test {
  23 };
  24
  25 TEST_F(PanelMouseWatcherTest, StartStopWatching) {
  26   base::MessageLoopForUI loop;
  27
  28   scoped_ptr<PanelMouseWatcher> watcher(PanelMouseWatcher::Create());
  29   EXPECT_FALSE(watcher->IsActive());
  30
  31   scoped_ptr<TestMouseObserver> user1(new TestMouseObserver());
  32   scoped_ptr<TestMouseObserver> user2(new TestMouseObserver());
  33
  34   // No observers.
  35   watcher->NotifyMouseMovement(gfx::Point(42, 101));
  36   EXPECT_EQ(0, user1->mouse_movements_);
  37   EXPECT_EQ(0, user2->mouse_movements_);
  38
  39   // Only one mouse observer.
  40   watcher->AddObserver(user1.get());
  41   EXPECT_TRUE(watcher->IsActive());
  42   watcher->NotifyMouseMovement(gfx::Point(42, 101));
  43   EXPECT_GE(user1->mouse_movements_, 1);
  44   EXPECT_EQ(0, user2->mouse_movements_);
  45   watcher->RemoveObserver(user1.get());
  46   EXPECT_FALSE(watcher->IsActive());
  47
  48   // More than one mouse observer.
  49   watcher->AddObserver(user1.get());
  50   EXPECT_TRUE(watcher->IsActive());
  51   watcher->AddObserver(user2.get());
  52   watcher->NotifyMouseMovement(gfx::Point(101, 42));
  53   EXPECT_GE(user1->mouse_movements_, 2);
  54   EXPECT_GE(user2->mouse_movements_, 1);
  55
  56   // Back to one observer.
  57   watcher->RemoveObserver(user1.get());
  58   EXPECT_TRUE(watcher->IsActive());
  59   int saved_count = user1->mouse_movements_;
  60   watcher->NotifyMouseMovement(gfx::Point(1, 2));
  61   EXPECT_EQ(saved_count, user1->mouse_movements_);
  62   EXPECT_GE(user2->mouse_movements_, 2);
  63   watcher->RemoveObserver(user2.get());
  64   EXPECT_FALSE(watcher->IsActive());
  65 }