content/renderer/disambiguation_popup_helper_unittest.cc

   1 // Copyright (c) 2012 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 "content/renderer/disambiguation_popup_helper.h"
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8 #include "third_party/WebKit/public/platform/WebRect.h"
   9 #include "third_party/WebKit/public/platform/WebVector.h"
  10 #include "ui/gfx/rect.h"
  11 #include "ui/gfx/size.h"
  12 #include "ui/gfx/size_conversions.h"
  13
  14 // these constants are copied from the implementation class
  15 namespace {
  16 const float kDisambiguationPopupMaxScale = 5.0;
  17 const float kDisambiguationPopupMinScale = 2.0;
  18 }  // unnamed namespace
  19
  20 namespace content {
  21
  22 class DisambiguationPopupHelperUnittest : public testing::Test {
  23  public:
  24   DisambiguationPopupHelperUnittest()
  25       : kScreenSize_(640, 480)
  26       , kVisibleContentSize_(640, 480)
  27       , kImplScale_(1) { }
  28  protected:
  29   const gfx::Size kScreenSize_;
  30   const gfx::Size kVisibleContentSize_;
  31   const float kImplScale_;
  32 };
  33
  34 TEST_F(DisambiguationPopupHelperUnittest, ClipByViewport) {
  35   gfx::Rect tap_rect(1000, 1000, 10, 10);
  36   WebKit::WebVector<WebKit::WebRect> target_rects(static_cast<size_t>(1));
  37   target_rects[0] = gfx::Rect(-20, -20, 10, 10);
  38
  39   gfx::Rect zoom_rect;
  40   float scale = DisambiguationPopupHelper::ComputeZoomAreaAndScaleFactor(
  41       tap_rect, target_rects, kScreenSize_, kVisibleContentSize_, kImplScale_,
  42       &zoom_rect);
  43
  44   EXPECT_TRUE(gfx::Rect(kVisibleContentSize_).Contains(zoom_rect));
  45   EXPECT_LE(kDisambiguationPopupMinScale, scale);
  46
  47   gfx::Size scaled_size = ToCeiledSize(ScaleSize(zoom_rect.size(), scale));
  48   EXPECT_TRUE(gfx::Rect(kScreenSize_).Contains(gfx::Rect(scaled_size)));
  49 }
  50
  51 TEST_F(DisambiguationPopupHelperUnittest, MiniTarget) {
  52   gfx::Rect tap_rect(-5, -5, 20, 20);
  53   WebKit::WebVector<WebKit::WebRect> target_rects(static_cast<size_t>(1));
  54   target_rects[0] = gfx::Rect(10, 10, 1, 1);
  55
  56   gfx::Rect zoom_rect;
  57   float scale = DisambiguationPopupHelper::ComputeZoomAreaAndScaleFactor(
  58       tap_rect, target_rects, kScreenSize_, kVisibleContentSize_, kImplScale_,
  59       &zoom_rect);
  60
  61   EXPECT_TRUE(gfx::Rect(kVisibleContentSize_).Contains(zoom_rect));
  62   EXPECT_EQ(kDisambiguationPopupMaxScale, scale);
  63   EXPECT_TRUE(zoom_rect.Contains(target_rects[0]));
  64
  65   gfx::Size scaled_size = ToCeiledSize(ScaleSize(zoom_rect.size(), scale));
  66   EXPECT_TRUE(gfx::Rect(kScreenSize_).Contains(gfx::Rect(scaled_size)));
  67 }
  68
  69 TEST_F(DisambiguationPopupHelperUnittest, LongLinks) {
  70   gfx::Rect tap_rect(10, 10, 20, 20);
  71   WebKit::WebVector<WebKit::WebRect> target_rects(static_cast<size_t>(2));
  72   target_rects[0] = gfx::Rect(15, 15, 1000, 5);
  73   target_rects[1] = gfx::Rect(15, 25, 1000, 5);
  74
  75   gfx::Rect zoom_rect;
  76   float scale = DisambiguationPopupHelper::ComputeZoomAreaAndScaleFactor(
  77       tap_rect, target_rects, kScreenSize_, kVisibleContentSize_, kImplScale_,
  78       &zoom_rect);
  79
  80   EXPECT_TRUE(gfx::Rect(kVisibleContentSize_).Contains(zoom_rect));
  81   EXPECT_EQ(kDisambiguationPopupMaxScale, scale);
  82   EXPECT_TRUE(zoom_rect.Contains(tap_rect));
  83
  84   gfx::Size scaled_size = ToCeiledSize(ScaleSize(zoom_rect.size(), scale));
  85   EXPECT_TRUE(gfx::Rect(kScreenSize_).Contains(gfx::Rect(scaled_size)));
  86 }
  87
  88 }  // namespace content