It is time.

ui/views/controls/scrollbar/scrollbar_unittest.cc

-// 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 "ui/views/controls/scrollbar/native_scroll_bar.h"
-#include "ui/views/controls/scrollbar/native_scroll_bar_views.h"
-#include "ui/views/controls/scrollbar/scroll_bar.h"
-#include "ui/views/test/views_test_base.h"
-#include "ui/views/widget/widget.h"
-
-namespace {
-
-// The Scrollbar controller. This is the widget that should do the real
-// scrolling of contents.
-class TestScrollBarController : public views::ScrollBarController {
- public:
-  virtual ~TestScrollBarController() {}
-
-  virtual void ScrollToPosition(views::ScrollBar* source,
-                                int position) override {
-    last_source = source;
-    last_position = position;
-  }
-
-  virtual int GetScrollIncrement(views::ScrollBar* source,
-                                 bool is_page,
-                                 bool is_positive) override {
-    last_source = source;
-    last_is_page = is_page;
-    last_is_positive = is_positive;
-
-    if (is_page)
-      return 20;
-    return 10;
-  }
-
-  // We save the last values in order to assert the corectness of the scroll
-  // operation.
-  views::ScrollBar* last_source;
-  bool last_is_positive;
-  bool last_is_page;
-  int last_position;
-};
-
-}  // namespace
-
-namespace views {
-
-class NativeScrollBarTest : public ViewsTestBase {
- public:
-  NativeScrollBarTest() : widget_(NULL), scrollbar_(NULL) {}
-
-  virtual void SetUp() {
-    ViewsTestBase::SetUp();
-    controller_.reset(new TestScrollBarController());
-
-    ASSERT_FALSE(scrollbar_);
-    native_scrollbar_ = new NativeScrollBar(true);
-    native_scrollbar_->SetBounds(0, 0, 100, 100);
-    native_scrollbar_->set_controller(controller_.get());
-
-    widget_ = new Widget;
-    Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
-    params.bounds = gfx::Rect(0, 0, 100, 100);
-    widget_->Init(params);
-    View* container = new View();
-    widget_->SetContentsView(container);
-    container->AddChildView(native_scrollbar_);
-
-    scrollbar_ =
-        static_cast<NativeScrollBarViews*>(native_scrollbar_->native_wrapper_);
-    scrollbar_->SetBounds(0, 0, 100, 100);
-    scrollbar_->Update(100, 200, 0);
-
-    track_size_ = scrollbar_->GetTrackBounds().width();
-  }
-
-  virtual void TearDown() {
-    widget_->Close();
-    ViewsTestBase::TearDown();
-  }
-
- protected:
-  Widget* widget_;
-
-  // This is the native scrollbar the Views one wraps around.
-  NativeScrollBar* native_scrollbar_;
-
-  // This is the Views scrollbar.
-  BaseScrollBar* scrollbar_;
-
-  // Keep track of the size of the track. This is how we can tell when we
-  // scroll to the middle.
-  int track_size_;
-
-  scoped_ptr<TestScrollBarController> controller_;
-};
-
-// TODO(dnicoara) Can't run the test on Windows since the scrollbar |Part|
-// isn't handled in NativeTheme.
-#if defined(OS_WIN)
-#define MAYBE_Scrolling DISABLED_Scrolling
-#define MAYBE_ScrollBarFitsToBottom DISABLED_ScrollBarFitsToBottom
-#else
-#define MAYBE_Scrolling Scrolling
-#define MAYBE_ScrollBarFitsToBottom ScrollBarFitsToBottom
-#endif
-
-TEST_F(NativeScrollBarTest, MAYBE_Scrolling) {
-  EXPECT_EQ(scrollbar_->GetPosition(), 0);
-  EXPECT_EQ(scrollbar_->GetMaxPosition(), 100);
-  EXPECT_EQ(scrollbar_->GetMinPosition(), 0);
-
-  // Scroll to middle.
-  scrollbar_->ScrollToThumbPosition(track_size_ / 4, false);
-  EXPECT_EQ(controller_->last_position, 50);
-  EXPECT_EQ(controller_->last_source, native_scrollbar_);
-
-  // Scroll to the end.
-  scrollbar_->ScrollToThumbPosition(track_size_ / 2, false);
-  EXPECT_EQ(controller_->last_position, 100);
-
-  // Overscroll. Last position should be the maximum position.
-  scrollbar_->ScrollToThumbPosition(track_size_, false);
-  EXPECT_EQ(controller_->last_position, 100);
-
-  // Underscroll. Last position should be the minimum position.
-  scrollbar_->ScrollToThumbPosition(-10, false);
-  EXPECT_EQ(controller_->last_position, 0);
-
-  // Test the different fixed scrolling amounts. Generally used by buttons,
-  // or click on track.
-  scrollbar_->ScrollToThumbPosition(0, false);
-  scrollbar_->ScrollByAmount(BaseScrollBar::SCROLL_NEXT_LINE);
-  EXPECT_EQ(controller_->last_position, 10);
-
-  scrollbar_->ScrollByAmount(BaseScrollBar::SCROLL_PREV_LINE);
-  EXPECT_EQ(controller_->last_position, 0);
-
-  scrollbar_->ScrollByAmount(BaseScrollBar::SCROLL_NEXT_PAGE);
-  EXPECT_EQ(controller_->last_position, 20);
-
-  scrollbar_->ScrollByAmount(BaseScrollBar::SCROLL_PREV_PAGE);
-  EXPECT_EQ(controller_->last_position, 0);
-}
-
-TEST_F(NativeScrollBarTest, MAYBE_ScrollBarFitsToBottom) {
-  scrollbar_->Update(100, 199, 0);
-  EXPECT_EQ(0, scrollbar_->GetPosition());
-  EXPECT_EQ(99, scrollbar_->GetMaxPosition());
-  EXPECT_EQ(0, scrollbar_->GetMinPosition());
-
-  scrollbar_->Update(100, 199, 99);
-  EXPECT_EQ(
-      scrollbar_->GetTrackBounds().width() - scrollbar_->GetThumbSizeForTest(),
-      scrollbar_->GetPosition());
-}
-
-TEST_F(NativeScrollBarTest, ScrollToEndAfterShrinkAndExpand) {
-  // Scroll to the end of the content.
-  scrollbar_->Update(100, 101, 0);
-  EXPECT_TRUE(scrollbar_->ScrollByContentsOffset(-1));
-  // Shrink and then re-exapnd the content.
-  scrollbar_->Update(100, 100, 0);
-  scrollbar_->Update(100, 101, 0);
-  // Ensure the scrollbar allows scrolling to the end.
-  EXPECT_TRUE(scrollbar_->ScrollByContentsOffset(-1));
-}
-
-}  // namespace views