src/cc/resources/tile_priority_unittest.cc

   1 // Copyright 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 "cc/resources/tile_priority.h"
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8
   9 namespace cc {
  10 namespace {
  11
  12 TEST(TilePriorityTest, TimeForBoundsToIntersectWithScroll) {
  13   const float inf = std::numeric_limits<float>::infinity();
  14   gfx::Rect target(0, 0, 800, 600);
  15   gfx::Rect current(100, 100, 100, 100);
  16   EXPECT_EQ(0, TilePriority::TimeForBoundsToIntersect(
  17       gfx::Rect(-200, 0, 100, 100), current, 1, target));
  18   EXPECT_EQ(0, TilePriority::TimeForBoundsToIntersect(
  19       gfx::Rect(-100, 0, 100, 100), current, 1, target));
  20   EXPECT_EQ(0, TilePriority::TimeForBoundsToIntersect(
  21       gfx::Rect(400, 400, 100, 100), current, 1, target));
  22
  23   current = gfx::Rect(-300, -300, 100, 100);
  24   EXPECT_EQ(inf, TilePriority::TimeForBoundsToIntersect(
  25       gfx::Rect(0, 0, 100, 100), current, 1, target));
  26   EXPECT_EQ(inf, TilePriority::TimeForBoundsToIntersect(
  27       gfx::Rect(-200, -200, 100, 100), current, 1, target));
  28   EXPECT_EQ(2, TilePriority::TimeForBoundsToIntersect(
  29       gfx::Rect(-400, -400, 100, 100), current, 1, target));
  30 }
  31
  32 TEST(TilePriorityTest, TimeForBoundsToIntersectWithScale) {
  33   const float inf = std::numeric_limits<float>::infinity();
  34   gfx::Rect target(0, 0, 800, 600);
  35   gfx::Rect current(100, 100, 100, 100);
  36   EXPECT_EQ(0, TilePriority::TimeForBoundsToIntersect(
  37       gfx::Rect(-200, 0, 200, 200), current, 1, target));
  38   EXPECT_EQ(0, TilePriority::TimeForBoundsToIntersect(
  39       gfx::Rect(-100, 0, 50, 50), current, 1, target));
  40   EXPECT_EQ(0, TilePriority::TimeForBoundsToIntersect(
  41       gfx::Rect(400, 400, 400, 400), current, 1, target));
  42
  43   current = gfx::Rect(-300, -300, 100, 100);
  44   EXPECT_EQ(inf, TilePriority::TimeForBoundsToIntersect(
  45       gfx::Rect(-400, -400, 300, 300), current, 1, target));
  46   EXPECT_EQ(8, TilePriority::TimeForBoundsToIntersect(
  47       gfx::Rect(-275, -275, 50, 50), current, 1, target));
  48   EXPECT_EQ(1, TilePriority::TimeForBoundsToIntersect(
  49       gfx::Rect(-450, -450, 50, 50), current, 1, target));
  50 }
  51
  52 TEST(TilePriorityTest, ManhattanDistanceBetweenRects) {
  53   EXPECT_EQ(0, TilePriority::manhattanDistance(
  54       gfx::RectF(0, 0, 400, 400), gfx::RectF(0, 0, 100, 100)));
  55
  56   EXPECT_EQ(2, TilePriority::manhattanDistance(
  57       gfx::Rect(0, 0, 400, 400), gfx::Rect(-100, -100, 100, 100)));
  58
  59   EXPECT_EQ(1, TilePriority::manhattanDistance(
  60       gfx::Rect(0, 0, 400, 400), gfx::Rect(0, -100, 100, 100)));
  61
  62   EXPECT_EQ(202, TilePriority::manhattanDistance(
  63       gfx::Rect(0, 0, 100, 100), gfx::Rect(200, 200, 100, 100)));
  64 }
  65
  66 }  // namespace
  67 }  // namespace cc