src/ui/message_center/views/bounded_scroll_view_unittest.cc

   1 // Copyright 2014 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 "ui/message_center/views/bounded_scroll_view.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9 #include "ui/gfx/size.h"
  10 #include "ui/views/test/test_views.h"
  11
  12 namespace message_center {
  13
  14 namespace test {
  15
  16 const int kMinHeight = 50;
  17 const int kMaxHeight = 100;
  18
  19 const int kWidth = 100;
  20
  21 class BoundedScrollViewTest : public testing::Test {
  22  public:
  23   BoundedScrollViewTest() {}
  24   virtual ~BoundedScrollViewTest() {}
  25
  26   virtual void SetUp() OVERRIDE {
  27     scroller_.reset(
  28         new message_center::BoundedScrollView(kMinHeight, kMaxHeight));
  29   }
  30
  31   virtual void TearDown() OVERRIDE { scroller_.reset(); }
  32
  33  protected:
  34   message_center::BoundedScrollView* scroller() { return scroller_.get(); }
  35
  36  private:
  37   scoped_ptr<message_center::BoundedScrollView> scroller_;
  38 };
  39
  40 TEST_F(BoundedScrollViewTest, NormalSizeContentTest) {
  41   const int kNormalContentHeight = 75;
  42   scroller()->SetContents(
  43       new views::StaticSizedView(gfx::Size(kWidth, kNormalContentHeight)));
  44
  45   EXPECT_EQ(gfx::Size(kWidth, kNormalContentHeight),
  46             scroller()->GetPreferredSize());
  47
  48   scroller()->SizeToPreferredSize();
  49   scroller()->Layout();
  50
  51   EXPECT_EQ(gfx::Size(kWidth, kNormalContentHeight),
  52             scroller()->contents()->size());
  53   EXPECT_EQ(gfx::Size(kWidth, kNormalContentHeight), scroller()->size());
  54 }
  55
  56 TEST_F(BoundedScrollViewTest, ShortContentTest) {
  57   const int kShortContentHeight = 10;
  58   scroller()->SetContents(
  59       new views::StaticSizedView(gfx::Size(kWidth, kShortContentHeight)));
  60
  61   EXPECT_EQ(gfx::Size(kWidth, kMinHeight), scroller()->GetPreferredSize());
  62
  63   scroller()->SizeToPreferredSize();
  64   scroller()->Layout();
  65
  66   EXPECT_EQ(gfx::Size(kWidth, kShortContentHeight),
  67             scroller()->contents()->size());
  68   EXPECT_EQ(gfx::Size(kWidth, kMinHeight), scroller()->size());
  69 }
  70
  71 TEST_F(BoundedScrollViewTest, TallContentTest) {
  72   const int kTallContentHeight = 1000;
  73   scroller()->SetContents(
  74       new views::StaticSizedView(gfx::Size(kWidth, kTallContentHeight)));
  75
  76   EXPECT_EQ(gfx::Size(kWidth, kMaxHeight), scroller()->GetPreferredSize());
  77
  78   scroller()->SizeToPreferredSize();
  79   scroller()->Layout();
  80
  81   EXPECT_EQ(gfx::Size(kWidth, kTallContentHeight),
  82             scroller()->contents()->size());
  83   EXPECT_EQ(gfx::Size(kWidth, kMaxHeight), scroller()->size());
  84 }
  85
  86 TEST_F(BoundedScrollViewTest, NeedsScrollBarTest) {
  87   // Create a view that will be much taller than it is high.
  88   scroller()->SetContents(new views::ProportionallySizedView(1000));
  89
  90   // Without any width, it will default to 0,0 but be overridden by min height.
  91   scroller()->SizeToPreferredSize();
  92   EXPECT_EQ(gfx::Size(0, kMinHeight), scroller()->GetPreferredSize());
  93
  94   gfx::Size new_size(kWidth, scroller()->GetHeightForWidth(kWidth));
  95   scroller()->SetSize(new_size);
  96   scroller()->Layout();
  97
  98   int scroll_bar_width = scroller()->GetScrollBarWidth();
  99   int expected_width = kWidth - scroll_bar_width;
 100   EXPECT_EQ(scroller()->contents()->size().width(), expected_width);
 101   EXPECT_EQ(scroller()->contents()->size().height(), 1000 * expected_width);
 102   EXPECT_EQ(gfx::Size(kWidth, kMaxHeight), scroller()->size());
 103 }
 104
 105 }  // namespace test
 106
 107 }  // namespace message_center