chrome/browser/manifest/manifest_icon_downloader_unittest.cc

   1 // Copyright 2015 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 "chrome/browser/manifest/manifest_icon_downloader.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 class ManifestIconDownloaderTest : public testing::Test  {
  13  protected:
  14   ManifestIconDownloaderTest() = default;
  15   ~ManifestIconDownloaderTest() override = default;
  16
  17   int FindBitmap(const int ideal_icon_size_in_px,
  18                  const int minimum_icon_size_in_px,
  19                  const std::vector<SkBitmap>& bitmaps) {
  20     return ManifestIconDownloader::FindClosestBitmapIndex(
  21         ideal_icon_size_in_px, minimum_icon_size_in_px, bitmaps);
  22   }
  23
  24   SkBitmap CreateDummyBitmap(int width, int height) {
  25     SkBitmap bitmap;
  26     bitmap.allocN32Pixels(width, height);
  27     bitmap.setImmutable();
  28     return bitmap;
  29   }
  30
  31   DISALLOW_COPY_AND_ASSIGN(ManifestIconDownloaderTest);
  32 };
  33
  34 TEST_F(ManifestIconDownloaderTest, NoIcons) {
  35   ASSERT_EQ(-1, FindBitmap(0, 0, std::vector<SkBitmap>()));
  36 }
  37
  38 TEST_F(ManifestIconDownloaderTest, ExactIsChosen) {
  39   std::vector<SkBitmap> bitmaps;
  40   bitmaps.push_back(CreateDummyBitmap(10, 10));
  41
  42   ASSERT_EQ(0, FindBitmap(10, 0, bitmaps));
  43 }
  44
  45 TEST_F(ManifestIconDownloaderTest, BiggerIsChosen) {
  46   std::vector<SkBitmap> bitmaps;
  47   bitmaps.push_back(CreateDummyBitmap(20, 20));
  48
  49   ASSERT_EQ(0, FindBitmap(10, 0, bitmaps));
  50 }
  51
  52 TEST_F(ManifestIconDownloaderTest, SmallerBelowMinimumIsIgnored) {
  53   std::vector<SkBitmap> bitmaps;
  54   bitmaps.push_back(CreateDummyBitmap(10, 10));
  55
  56   ASSERT_EQ(-1, FindBitmap(20, 15, bitmaps));
  57 }
  58
  59 TEST_F(ManifestIconDownloaderTest, SmallerAboveMinimumIsChosen) {
  60   std::vector<SkBitmap> bitmaps;
  61   bitmaps.push_back(CreateDummyBitmap(15, 15));
  62
  63   ASSERT_EQ(0, FindBitmap(20, 15, bitmaps));
  64 }
  65
  66 TEST_F(ManifestIconDownloaderTest, ExactIsPreferredOverBigger) {
  67   std::vector<SkBitmap> bitmaps;
  68   bitmaps.push_back(CreateDummyBitmap(20, 20));
  69   bitmaps.push_back(CreateDummyBitmap(10, 10));
  70
  71   ASSERT_EQ(1, FindBitmap(10, 0, bitmaps));
  72 }
  73
  74 TEST_F(ManifestIconDownloaderTest, ExactIsPreferredOverSmaller) {
  75   std::vector<SkBitmap> bitmaps;
  76   bitmaps.push_back(CreateDummyBitmap(20, 20));
  77   bitmaps.push_back(CreateDummyBitmap(10, 10));
  78
  79   ASSERT_EQ(0, FindBitmap(20, 0, bitmaps));
  80 }
  81
  82 TEST_F(ManifestIconDownloaderTest, BiggerIsPreferredOverCloserSmaller) {
  83   std::vector<SkBitmap> bitmaps;
  84   bitmaps.push_back(CreateDummyBitmap(20, 20));
  85   bitmaps.push_back(CreateDummyBitmap(10, 10));
  86
  87   ASSERT_EQ(0, FindBitmap(11, 0, bitmaps));
  88 }
  89
  90 TEST_F(ManifestIconDownloaderTest, ClosestToExactIsChosen) {
  91   std::vector<SkBitmap> bitmaps;
  92   bitmaps.push_back(CreateDummyBitmap(25, 25));
  93   bitmaps.push_back(CreateDummyBitmap(20, 20));
  94
  95   ASSERT_EQ(1, FindBitmap(10, 0, bitmaps));
  96 }
  97
  98 TEST_F(ManifestIconDownloaderTest, MixedReturnsBiggestClosest) {
  99   std::vector<SkBitmap> bitmaps;
 100   bitmaps.push_back(CreateDummyBitmap(10, 10));
 101   bitmaps.push_back(CreateDummyBitmap(8, 8));
 102   bitmaps.push_back(CreateDummyBitmap(6, 6));
 103
 104   ASSERT_EQ(0, FindBitmap(9, 0, bitmaps));
 105 }
 106
 107 TEST_F(ManifestIconDownloaderTest, MixedCanReturnMiddle) {
 108   std::vector<SkBitmap> bitmaps;
 109   bitmaps.push_back(CreateDummyBitmap(10, 10));
 110   bitmaps.push_back(CreateDummyBitmap(8, 8));
 111   bitmaps.push_back(CreateDummyBitmap(6, 6));
 112
 113   ASSERT_EQ(1, FindBitmap(7, 0, bitmaps));
 114 }
 115
 116 TEST_F(ManifestIconDownloaderTest, NonSquareIsIgnored) {
 117   std::vector<SkBitmap> bitmaps;
 118   bitmaps.push_back(CreateDummyBitmap(15, 10));
 119   bitmaps.push_back(CreateDummyBitmap(10, 15));
 120
 121   ASSERT_EQ(-1, FindBitmap(15, 0, bitmaps));
 122   ASSERT_EQ(-1, FindBitmap(10, 0, bitmaps));
 123 }