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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/manifest/manifest_icon_selector.h"
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
const int kDefaultIconSize = 144;
GURL FindBestMatchingIconWithMinimum(
const std::vector<content::Manifest::Icon>& icons,
int ideal_icon_size_in_px,
int minimum_icon_size_in_px) {
return ManifestIconSelector::FindBestMatchingIcon(
icons, ideal_icon_size_in_px, minimum_icon_size_in_px);
}
GURL FindBestMatchingIcon(const std::vector<content::Manifest::Icon>& icons,
int ideal_icon_size_in_px) {
return FindBestMatchingIconWithMinimum(icons, ideal_icon_size_in_px, 0);
}
static content::Manifest::Icon CreateIcon(const std::string& url,
const std::string& type,
const std::vector<gfx::Size> sizes) {
content::Manifest::Icon icon;
icon.src = GURL(url);
icon.type = base::UTF8ToUTF16(type);
icon.sizes = sizes;
return icon;
}
} // anonymous namespace
TEST(ManifestIconSelector, NoIcons) {
// No icons should return the empty URL.
std::vector<content::Manifest::Icon> icons;
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_TRUE(url.is_empty());
}
TEST(ManifestIconSelector, NoSizes) {
// Icon with no sizes are ignored.
std::vector<content::Manifest::Icon> icons;
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", std::vector<gfx::Size>()));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_TRUE(url.is_empty());
}
TEST(ManifestIconSelector, MIMETypeFiltering) {
// Icons with type specified to a MIME type that isn't a valid image MIME type
// are ignored.
std::vector<gfx::Size> sizes;
sizes.push_back(gfx::Size(1024, 1024));
std::vector<content::Manifest::Icon> icons;
icons.push_back(
CreateIcon("http://foo.com/icon.png", "image/foo_bar", sizes));
icons.push_back(CreateIcon("http://foo.com/icon.png", "image/", sizes));
icons.push_back(CreateIcon("http://foo.com/icon.png", "image/", sizes));
icons.push_back(CreateIcon("http://foo.com/icon.png", "video/mp4", sizes));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_TRUE(url.is_empty());
icons.clear();
icons.push_back(CreateIcon("http://foo.com/icon.png", "image/png", sizes));
url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
icons.clear();
icons.push_back(CreateIcon("http://foo.com/icon.png", "image/gif", sizes));
url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
icons.clear();
icons.push_back(CreateIcon("http://foo.com/icon.png", "image/jpeg", sizes));
url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
TEST(ManifestIconSelector, PreferredSizeIsUsedFirst) {
// Each icon is marked with sizes that match the preferred icon size.
std::vector<gfx::Size> sizes_48;
sizes_48.push_back(gfx::Size(48, 48));
std::vector<gfx::Size> sizes_96;
sizes_96.push_back(gfx::Size(96, 96));
std::vector<gfx::Size> sizes_144;
sizes_144.push_back(gfx::Size(144, 144));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_48.png", "", sizes_48));
icons.push_back(CreateIcon("http://foo.com/icon_96.png", "", sizes_96));
icons.push_back(CreateIcon("http://foo.com/icon_144.png", "", sizes_144));
GURL url = FindBestMatchingIcon(icons, 48);
EXPECT_EQ("http://foo.com/icon_48.png", url.spec());
url = FindBestMatchingIcon(icons, 96);
EXPECT_EQ("http://foo.com/icon_96.png", url.spec());
url = FindBestMatchingIcon(icons, 144);
EXPECT_EQ("http://foo.com/icon_144.png", url.spec());
}
TEST(ManifestIconSelector, FirstIconWithPreferredSizeIsUsedFirst) {
// This test has three icons. The first icon is going to be used because it
// contains the preferred size.
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(kDefaultIconSize, kDefaultIconSize));
sizes_1.push_back(gfx::Size(kDefaultIconSize * 2, kDefaultIconSize * 2));
sizes_1.push_back(gfx::Size(kDefaultIconSize * 3, kDefaultIconSize * 3));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(1024, 1024));
std::vector<gfx::Size> sizes_3;
sizes_3.push_back(gfx::Size(1024, 1024));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_x1.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon_x2.png", "", sizes_2));
icons.push_back(CreateIcon("http://foo.com/icon_x3.png", "", sizes_3));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
url = FindBestMatchingIcon(icons, kDefaultIconSize * 2);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
url = FindBestMatchingIcon(icons, kDefaultIconSize * 3);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
}
TEST(ManifestIconSelector, FallbackToSmallestLargerIcon) {
// If there is no perfect icon, the smallest larger icon will be chosen.
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(90, 90));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(128, 128));
std::vector<gfx::Size> sizes_3;
sizes_3.push_back(gfx::Size(192, 192));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_x1.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon_x2.png", "", sizes_2));
icons.push_back(CreateIcon("http://foo.com/icon_x3.png", "", sizes_3));
GURL url = FindBestMatchingIcon(icons, 48);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
url = FindBestMatchingIcon(icons, 96);
EXPECT_EQ("http://foo.com/icon_x2.png", url.spec());
url = FindBestMatchingIcon(icons, 144);
EXPECT_EQ("http://foo.com/icon_x3.png", url.spec());
}
TEST(ManifestIconSelector, FallbackToLargestIconLargerThanMinimum) {
// When an icon of the correct size has not been found, we fall back to the
// closest non-matching sizes. Make sure that the minimum passed is enforced.
std::vector<gfx::Size> sizes_1_2;
std::vector<gfx::Size> sizes_3;
sizes_1_2.push_back(gfx::Size(47, 47));
sizes_3.push_back(gfx::Size(95, 95));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_x1.png", "", sizes_1_2));
icons.push_back(CreateIcon("http://foo.com/icon_x2.png", "", sizes_1_2));
icons.push_back(CreateIcon("http://foo.com/icon_x3.png", "", sizes_3));
// Icon 3 should match.
GURL url = FindBestMatchingIconWithMinimum(icons, 1024, 48);
EXPECT_EQ("http://foo.com/icon_x3.png", url.spec());
// Nothing matches here as the minimum is 96.
url = FindBestMatchingIconWithMinimum(icons, 1024, 96);
EXPECT_TRUE(url.is_empty());
}
TEST(ManifestIconSelector, IdealVeryCloseToMinimumMatches) {
std::vector<gfx::Size> sizes;
sizes.push_back(gfx::Size(2, 2));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_x1.png", "", sizes));
GURL url = FindBestMatchingIconWithMinimum(icons, 2, 1);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
}
TEST(ManifestIconSelector, SizeVeryCloseToMinimumMatches) {
std::vector<gfx::Size> sizes;
sizes.push_back(gfx::Size(2, 2));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_x1.png", "", sizes));
GURL url = FindBestMatchingIconWithMinimum(icons, 200, 1);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
}
TEST(ManifestIconSelector, NotSquareIconsAreIgnored) {
std::vector<gfx::Size> sizes;
sizes.push_back(gfx::Size(1024, 1023));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_TRUE(url.is_empty());
}
TEST(ManifestIconSelector, ClosestIconToPreferred) {
// Ensure ManifestIconSelector::FindBestMatchingIcon selects the closest icon
// to the preferred size when presented with a number of options.
int very_small = kDefaultIconSize / 4;
int small_size = kDefaultIconSize / 2;
int bit_small = kDefaultIconSize - 1;
int bit_big = kDefaultIconSize + 1;
int big = kDefaultIconSize * 2;
int very_big = kDefaultIconSize * 4;
// (very_small, bit_small) => bit_small
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(very_small, very_small));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(bit_small, bit_small));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_no.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes_2));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
// (very_small, bit_small, small_size) => bit_small
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(very_small, very_small));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(bit_small, bit_small));
std::vector<gfx::Size> sizes_3;
sizes_3.push_back(gfx::Size(small_size, small_size));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_no_1.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes_2));
icons.push_back(CreateIcon("http://foo.com/icon_no_2.png", "", sizes_3));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
// (very_big, big) => big
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(very_big, very_big));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(big, big));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_no.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes_2));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
// (very_big, big, bit_big) => bit_big
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(very_big, very_big));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(big, big));
std::vector<gfx::Size> sizes_3;
sizes_3.push_back(gfx::Size(bit_big, bit_big));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_no.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon_no.png", "", sizes_2));
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes_3));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
// (bit_small, very_big) => very_big
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(bit_small, bit_small));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(very_big, very_big));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_no.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes_2));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
// (bit_small, bit_big) => bit_big
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(bit_small, bit_small));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(bit_big, bit_big));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_no.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes_2));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
}
TEST(ManifestIconSelector, UseAnyIfNoPreferredSize) {
// 'any' (ie. gfx::Size(0,0)) should be used if there is no icon of a
// preferred size.
// Icon with 'any' and icon with preferred size => preferred size is chosen.
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(kDefaultIconSize, kDefaultIconSize));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(0, 0));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon_no.png", "", sizes_2));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
// Icon with 'any' and icon larger than preferred size => any is chosen.
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(kDefaultIconSize + 1, kDefaultIconSize + 1));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(0, 0));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_no.png", "", sizes_1));
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes_2));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
// Multiple icons with 'any' => the last one is chosen.
{
std::vector<gfx::Size> sizes;
sizes.push_back(gfx::Size(0, 0));
std::vector<content::Manifest::Icon> icons;
icons.push_back(CreateIcon("http://foo.com/icon_no1.png", "", sizes));
icons.push_back(CreateIcon("http://foo.com/icon_no2.png", "", sizes));
icons.push_back(CreateIcon("http://foo.com/icon.png", "", sizes));
GURL url = FindBestMatchingIcon(icons, kDefaultIconSize * 3);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
}
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