ash/wm/workspace/magnetism_matcher_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 "ash/wm/workspace/magnetism_matcher.h"
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8
   9 namespace ash {
  10
  11 // Trivial test case verifying assertions on left edge.
  12 TEST(MagnetismMatcherTest, TrivialLeft) {
  13   const int distance = MagnetismMatcher::kMagneticDistance;
  14   const gfx::Rect initial_bounds(20, 10, 50, 60);
  15   MagnetismMatcher matcher(initial_bounds, kAllMagnetismEdges);
  16   EXPECT_FALSE(matcher.AreEdgesObscured());
  17   MatchedEdge edge;
  18   EXPECT_FALSE(matcher.ShouldAttach(
  19                    gfx::Rect(initial_bounds.x() - distance - 10,
  20                              initial_bounds.y() - distance - 10, 2, 3), &edge));
  21   EXPECT_FALSE(matcher.AreEdgesObscured());
  22   EXPECT_TRUE(matcher.ShouldAttach(
  23                   gfx::Rect(initial_bounds.x() - 2, initial_bounds.y(), 1, 1),
  24                   &edge));
  25   EXPECT_EQ(MAGNETISM_EDGE_LEFT, edge.primary_edge);
  26   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_LEADING, edge.secondary_edge);
  27
  28   EXPECT_TRUE(matcher.ShouldAttach(
  29                   gfx::Rect(initial_bounds.x() - 2,
  30                             initial_bounds.y() + distance + 1 , 1, 1),
  31                   &edge));
  32   EXPECT_EQ(MAGNETISM_EDGE_LEFT, edge.primary_edge);
  33   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_NONE, edge.secondary_edge);
  34 }
  35
  36 // Trivial test case verifying assertions on bottom edge.
  37 TEST(MagnetismMatcherTest, TrivialBottom) {
  38   const int distance = MagnetismMatcher::kMagneticDistance;
  39   const gfx::Rect initial_bounds(20, 10, 50, 60);
  40   MagnetismMatcher matcher(initial_bounds, kAllMagnetismEdges);
  41   EXPECT_FALSE(matcher.AreEdgesObscured());
  42   MatchedEdge edge;
  43   EXPECT_FALSE(matcher.ShouldAttach(
  44                    gfx::Rect(initial_bounds.x() - distance - 10,
  45                              initial_bounds.y() - distance - 10, 2, 3), &edge));
  46   EXPECT_FALSE(matcher.AreEdgesObscured());
  47   EXPECT_TRUE(matcher.ShouldAttach(
  48                   gfx::Rect(initial_bounds.x() - 2,
  49                             initial_bounds.bottom() + 4, 10, 1), &edge));
  50   EXPECT_EQ(MAGNETISM_EDGE_BOTTOM, edge.primary_edge);
  51   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_LEADING, edge.secondary_edge);
  52
  53   EXPECT_TRUE(matcher.ShouldAttach(
  54                   gfx::Rect(initial_bounds.x() + distance + 1,
  55                             initial_bounds.bottom() + 4, 10, 1), &edge));
  56   EXPECT_EQ(MAGNETISM_EDGE_BOTTOM, edge.primary_edge);
  57   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_NONE, edge.secondary_edge);
  58
  59   EXPECT_TRUE(matcher.ShouldAttach(
  60                   gfx::Rect(initial_bounds.right() - 10 - 1,
  61                             initial_bounds.bottom() + 4, 10, 1), &edge));
  62   EXPECT_EQ(MAGNETISM_EDGE_BOTTOM, edge.primary_edge);
  63   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_TRAILING, edge.secondary_edge);
  64 }
  65
  66 // Verifies we don't match an obscured corner.
  67 TEST(MagnetismMatcherTest, ObscureLeading) {
  68   const int distance = MagnetismMatcher::kMagneticDistance;
  69   const gfx::Rect initial_bounds(20, 10, 150, 160);
  70   MagnetismMatcher matcher(initial_bounds, kAllMagnetismEdges);
  71   MatchedEdge edge;
  72   // Overlap with the upper right corner.
  73   EXPECT_FALSE(matcher.ShouldAttach(
  74                    gfx::Rect(initial_bounds.right() - distance * 2,
  75                              initial_bounds.y() - distance - 2,
  76                              distance * 3,
  77                              (distance + 2) * 2), &edge));
  78   EXPECT_FALSE(matcher.AreEdgesObscured());
  79   // Verify doesn't match the following which is obscured by first.
  80   EXPECT_FALSE(matcher.ShouldAttach(
  81                    gfx::Rect(initial_bounds.right() + 1,
  82                              initial_bounds.y(),
  83                              distance,
  84                              5), &edge));
  85   // Should match the following which extends into non-overlapping region.
  86   EXPECT_TRUE(matcher.ShouldAttach(
  87                    gfx::Rect(initial_bounds.right() + 1,
  88                              initial_bounds.y() + distance + 1,
  89                              distance,
  90                              15), &edge));
  91   EXPECT_EQ(MAGNETISM_EDGE_RIGHT, edge.primary_edge);
  92   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_NONE, edge.secondary_edge);
  93 }
  94
  95 // Verifies obscuring one side doesn't obscure the other.
  96 TEST(MagnetismMatcherTest, DontObscureOtherSide) {
  97   const int distance = MagnetismMatcher::kMagneticDistance;
  98   const gfx::Rect initial_bounds(20, 10, 150, 160);
  99   MagnetismMatcher matcher(initial_bounds, kAllMagnetismEdges);
 100   MatchedEdge edge;
 101   // Overlap with the left side.
 102   EXPECT_FALSE(matcher.ShouldAttach(
 103                    gfx::Rect(initial_bounds.x() - distance + 1,
 104                              initial_bounds.y() + 2,
 105                              distance * 2 + 2,
 106                              initial_bounds.height() + distance * 4), &edge));
 107   EXPECT_FALSE(matcher.AreEdgesObscured());
 108   // Should match the right side since it isn't obscured.
 109   EXPECT_TRUE(matcher.ShouldAttach(
 110                    gfx::Rect(initial_bounds.right() - 1,
 111                              initial_bounds.y() + distance + 1,
 112                              distance,
 113                              5), &edge));
 114   EXPECT_EQ(MAGNETISM_EDGE_RIGHT, edge.primary_edge);
 115   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_NONE, edge.secondary_edge);
 116 }
 117
 118 // Verifies we don't match an obscured center.
 119 TEST(MagnetismMatcherTest, ObscureCenter) {
 120   const int distance = MagnetismMatcher::kMagneticDistance;
 121   const gfx::Rect initial_bounds(20, 10, 150, 160);
 122   MagnetismMatcher matcher(initial_bounds, kAllMagnetismEdges);
 123   MatchedEdge edge;
 124   // Overlap with the center bottom edge.
 125   EXPECT_FALSE(matcher.ShouldAttach(
 126                    gfx::Rect(100, initial_bounds.bottom() - distance - 2,
 127                              20,
 128                              (distance + 2) * 2), &edge));
 129   EXPECT_FALSE(matcher.AreEdgesObscured());
 130   // Verify doesn't match the following which is obscured by first.
 131   EXPECT_FALSE(matcher.ShouldAttach(
 132                    gfx::Rect(110, initial_bounds.bottom() + 1,
 133                              10, 5), &edge));
 134   // Should match the following which extends into non-overlapping region.
 135   EXPECT_TRUE(matcher.ShouldAttach(
 136                   gfx::Rect(90,
 137                             initial_bounds.bottom() + 1,
 138                             10, 5), &edge));
 139   EXPECT_EQ(MAGNETISM_EDGE_BOTTOM, edge.primary_edge);
 140   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_NONE, edge.secondary_edge);
 141 }
 142
 143 // Verifies we don't match an obscured trailing edge.
 144 TEST(MagnetismMatcherTest, ObscureTrailing) {
 145   const int distance = MagnetismMatcher::kMagneticDistance;
 146   const gfx::Rect initial_bounds(20, 10, 150, 160);
 147   MagnetismMatcher matcher(initial_bounds, kAllMagnetismEdges);
 148   MatchedEdge edge;
 149   // Overlap with the trailing left edge.
 150   EXPECT_FALSE(matcher.ShouldAttach(
 151                    gfx::Rect(initial_bounds.x() - distance - 2,
 152                              150,
 153                              (distance + 2) * 2,
 154                              50), &edge));
 155   EXPECT_FALSE(matcher.AreEdgesObscured());
 156   // Verify doesn't match the following which is obscured by first.
 157   EXPECT_FALSE(matcher.ShouldAttach(
 158                    gfx::Rect(initial_bounds.x() - 4,
 159                              160, 3, 20), &edge));
 160   // Should match the following which extends into non-overlapping region.
 161   EXPECT_TRUE(matcher.ShouldAttach(
 162                    gfx::Rect(initial_bounds.x() - 4,
 163                              140, 3, 20), &edge));
 164   EXPECT_EQ(MAGNETISM_EDGE_LEFT, edge.primary_edge);
 165   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_NONE, edge.secondary_edge);
 166 }
 167
 168 }  // namespace ash
 169