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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/public/common/manifest/manifest_icon_selector.h"
#include <string>
#include <vector>
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace blink {
using Purpose = blink::mojom::ManifestImageResource_Purpose;
namespace {
const int kIdealIconSize = 144;
const int kMinimumIconSize = 0;
// The same value as content::ManifestIconDownloader::kMaxWidthToHeightRatio
const int kMaxWidthToHeightRatio = 5;
} // anonymous namespace
class ManifestIconSelectorTest : public testing::TestWithParam<bool> {
public:
ManifestIconSelectorTest() : selects_square_only_(GetParam()) {}
~ManifestIconSelectorTest() = default;
protected:
blink::Manifest::ImageResource CreateIcon(const std::string& url,
const std::string& type,
const std::vector<gfx::Size> sizes,
Purpose purpose) {
blink::Manifest::ImageResource icon;
icon.src = GURL(url);
icon.type = base::UTF8ToUTF16(type);
icon.sizes = sizes;
icon.purpose.push_back(purpose);
return icon;
}
bool selects_square_only() { return selects_square_only_; }
int width_to_height_ratio() {
if (selects_square_only_)
return 1;
return kMaxWidthToHeightRatio;
}
GURL FindBestMatchingIcon(
const std::vector<blink::Manifest::ImageResource>& icons,
int ideal_icon_size_in_px,
int minimum_icon_size_in_px,
blink::mojom::ManifestImageResource_Purpose purpose) {
if (selects_square_only_) {
return ManifestIconSelector::FindBestMatchingSquareIcon(
icons, ideal_icon_size_in_px, minimum_icon_size_in_px, purpose);
}
return ManifestIconSelector::FindBestMatchingIcon(
icons, ideal_icon_size_in_px, minimum_icon_size_in_px,
kMaxWidthToHeightRatio, purpose);
}
private:
bool selects_square_only_;
};
TEST_P(ManifestIconSelectorTest, NoIcons) {
// No icons should return the empty URL.
std::vector<blink::Manifest::ImageResource> icons;
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_TRUE(url.is_empty());
}
TEST_P(ManifestIconSelectorTest, NoSizes) {
// Icon with no sizes are ignored.
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(CreateIcon("http://foo.com/icon.png", "",
std::vector<gfx::Size>(), Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_TRUE(url.is_empty());
}
TEST_P(ManifestIconSelectorTest, 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(width_to_height_ratio() * 1024, 1024));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(CreateIcon("http://foo.com/icon.png", "image/foo_bar", sizes,
Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "image/", sizes, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "image/", sizes, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "video/mp4", sizes, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_TRUE(url.is_empty());
icons.clear();
icons.push_back(
CreateIcon("http://foo.com/icon.png", "image/png", sizes, Purpose::ANY));
url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
icons.clear();
icons.push_back(
CreateIcon("http://foo.com/icon.png", "image/gif", sizes, Purpose::ANY));
url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
icons.clear();
icons.push_back(
CreateIcon("http://foo.com/icon.png", "image/jpeg", sizes, Purpose::ANY));
url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
TEST_P(ManifestIconSelectorTest, PurposeFiltering) {
// Icons with purpose specified to non-matching purpose are ignored.
std::vector<gfx::Size> sizes_48;
sizes_48.push_back(gfx::Size(width_to_height_ratio() * 48, 48));
std::vector<gfx::Size> sizes_96;
sizes_96.push_back(gfx::Size(width_to_height_ratio() * 96, 96));
std::vector<gfx::Size> sizes_144;
sizes_144.push_back(gfx::Size(width_to_height_ratio() * 144, 144));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(CreateIcon("http://foo.com/icon_48.png", "", sizes_48,
Purpose::MONOCHROME));
icons.push_back(
CreateIcon("http://foo.com/icon_96.png", "", sizes_96, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_144.png", "", sizes_144, Purpose::ANY));
GURL url =
FindBestMatchingIcon(icons, 48, kMinimumIconSize, Purpose::MONOCHROME);
EXPECT_EQ("http://foo.com/icon_48.png", url.spec());
url = FindBestMatchingIcon(icons, 48, kMinimumIconSize, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_96.png", url.spec());
url = FindBestMatchingIcon(icons, 96, kMinimumIconSize, Purpose::MONOCHROME);
EXPECT_EQ("http://foo.com/icon_48.png", url.spec());
url = FindBestMatchingIcon(icons, 96, 96, Purpose::MONOCHROME);
EXPECT_TRUE(url.is_empty());
url = FindBestMatchingIcon(icons, 144, kMinimumIconSize, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_144.png", url.spec());
}
TEST_P(ManifestIconSelectorTest, IdealSizeIsUsedFirst) {
// Each icon is marked with sizes that match the ideal icon size.
std::vector<gfx::Size> sizes_48;
sizes_48.push_back(gfx::Size(width_to_height_ratio() * 48, 48));
std::vector<gfx::Size> sizes_96;
sizes_96.push_back(gfx::Size(width_to_height_ratio() * 96, 96));
std::vector<gfx::Size> sizes_144;
sizes_144.push_back(gfx::Size(width_to_height_ratio() * 144, 144));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_48.png", "", sizes_48, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_96.png", "", sizes_96, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_144.png", "", sizes_144, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, 48, kMinimumIconSize, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_48.png", url.spec());
url = FindBestMatchingIcon(icons, 96, kMinimumIconSize, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_96.png", url.spec());
url = FindBestMatchingIcon(icons, 144, kMinimumIconSize, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_144.png", url.spec());
}
TEST_P(ManifestIconSelectorTest, FirstIconWithIdealSizeIsUsedFirst) {
// This test has three icons. The first icon is going to be used because it
// contains the ideal size.
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(
gfx::Size(width_to_height_ratio() * kIdealIconSize, kIdealIconSize));
sizes_1.push_back(gfx::Size(width_to_height_ratio() * kIdealIconSize * 2,
kIdealIconSize * 2));
sizes_1.push_back(gfx::Size(width_to_height_ratio() * kIdealIconSize * 3,
kIdealIconSize * 3));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(width_to_height_ratio() * 1024, 1024));
std::vector<gfx::Size> sizes_3;
sizes_3.push_back(gfx::Size(width_to_height_ratio() * 1024, 1024));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_x1.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_x2.png", "", sizes_2, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_x3.png", "", sizes_3, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
url = FindBestMatchingIcon(icons, kIdealIconSize * 2, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
url = FindBestMatchingIcon(icons, kIdealIconSize * 3, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
}
TEST_P(ManifestIconSelectorTest, 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(width_to_height_ratio() * 90, 90));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(width_to_height_ratio() * 128, 128));
std::vector<gfx::Size> sizes_3;
sizes_3.push_back(gfx::Size(width_to_height_ratio() * 192, 192));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_x1.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_x2.png", "", sizes_2, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_x3.png", "", sizes_3, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, 48, kMinimumIconSize, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
url = FindBestMatchingIcon(icons, 96, kMinimumIconSize, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_x2.png", url.spec());
url = FindBestMatchingIcon(icons, 144, kMinimumIconSize, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_x3.png", url.spec());
}
TEST_P(ManifestIconSelectorTest, 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(width_to_height_ratio() * 47, 47));
sizes_3.push_back(gfx::Size(width_to_height_ratio() * 95, 95));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_x1.png", "", sizes_1_2, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_x2.png", "", sizes_1_2, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_x3.png", "", sizes_3, Purpose::ANY));
// Icon 3 should match.
GURL url = FindBestMatchingIcon(icons, 1024, 48, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_x3.png", url.spec());
// Nothing matches here as the minimum is 96.
url = FindBestMatchingIcon(icons, 1024, 96, Purpose::ANY);
EXPECT_TRUE(url.is_empty());
}
TEST_P(ManifestIconSelectorTest, IdealVeryCloseToMinimumMatches) {
std::vector<gfx::Size> sizes;
sizes.push_back(gfx::Size(width_to_height_ratio() * 2, 2));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_x1.png", "", sizes, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, 2, 1, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
}
TEST_P(ManifestIconSelectorTest, SizeVeryCloseToMinimumMatches) {
std::vector<gfx::Size> sizes;
sizes.push_back(gfx::Size(width_to_height_ratio() * 2, 2));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_x1.png", "", sizes, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, 200, 1, Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_x1.png", url.spec());
}
TEST_P(ManifestIconSelectorTest, IconsWithInvalidDimensionsAreIgnored) {
std::vector<gfx::Size> sizes;
if (selects_square_only()) {
// Square selector should ignore non-square icons.
sizes.push_back(gfx::Size(1024, 1023));
} else {
// Landscape selector should ignore icons with improper width/height ratio.
sizes.push_back(gfx::Size((kMaxWidthToHeightRatio + 1) * 1023, 1023));
// Landscape selector should ignore portrait icons.
sizes.push_back(gfx::Size(1023, 1024));
}
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_TRUE(url.is_empty());
}
TEST_P(ManifestIconSelectorTest, ClosestIconToIdeal) {
// Ensure ManifestIconSelector::FindBestMatchingSquareIcon selects the closest
// icon to the ideal size when presented with a number of options.
int very_small = kIdealIconSize / 4;
int small_size = kIdealIconSize / 2;
int bit_small = kIdealIconSize - 1;
int bit_big = kIdealIconSize + 1;
int big = kIdealIconSize * 2;
int very_big = kIdealIconSize * 4;
// (very_small, bit_small) => bit_small
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(
gfx::Size(width_to_height_ratio() * very_small, very_small));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(
gfx::Size(width_to_height_ratio() * bit_small, bit_small));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_no.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes_2, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
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(width_to_height_ratio() * very_small, very_small));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(
gfx::Size(width_to_height_ratio() * bit_small, bit_small));
std::vector<gfx::Size> sizes_3;
sizes_3.push_back(
gfx::Size(width_to_height_ratio() * small_size, small_size));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_no_1.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes_2, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_no_2.png", "", sizes_3, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
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(width_to_height_ratio() * very_big, very_big));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(width_to_height_ratio() * big, big));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_no.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes_2, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
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(width_to_height_ratio() * very_big, very_big));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(width_to_height_ratio() * big, big));
std::vector<gfx::Size> sizes_3;
sizes_3.push_back(gfx::Size(width_to_height_ratio() * bit_big, bit_big));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_no.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_no.png", "", sizes_2, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes_3, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
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(width_to_height_ratio() * bit_small, bit_small));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(width_to_height_ratio() * very_big, very_big));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_no.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes_2, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
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(width_to_height_ratio() * bit_small, bit_small));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(width_to_height_ratio() * bit_big, bit_big));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_no.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes_2, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
}
TEST_P(ManifestIconSelectorTest, UseAnyIfNoIdealSize) {
// 'any' (ie. gfx::Size(0,0)) should be used if there is no icon of a
// ideal size.
// Icon with 'any' and icon with ideal size => ideal size is chosen.
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(
gfx::Size(width_to_height_ratio() * kIdealIconSize, kIdealIconSize));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(0, 0));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_no.png", "", sizes_2, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
// Icon with 'any' and icon larger than ideal size => any is chosen.
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(gfx::Size(width_to_height_ratio() * (kIdealIconSize + 1),
kIdealIconSize + 1));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(gfx::Size(0, 0));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_no.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes_2, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
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<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon_no1.png", "", sizes, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_no2.png", "", sizes, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize * 3, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon.png", url.spec());
}
// Multiple icons with ideal size => the last one is chosen.
{
std::vector<gfx::Size> sizes_1;
sizes_1.push_back(
gfx::Size(width_to_height_ratio() * kIdealIconSize, kIdealIconSize));
std::vector<gfx::Size> sizes_2;
sizes_2.push_back(
gfx::Size(width_to_height_ratio() * kIdealIconSize, kIdealIconSize));
std::vector<blink::Manifest::ImageResource> icons;
icons.push_back(
CreateIcon("http://foo.com/icon.png", "", sizes_1, Purpose::ANY));
icons.push_back(
CreateIcon("http://foo.com/icon_no.png", "", sizes_2, Purpose::ANY));
GURL url = FindBestMatchingIcon(icons, kIdealIconSize, kMinimumIconSize,
Purpose::ANY);
EXPECT_EQ("http://foo.com/icon_no.png", url.spec());
}
}
INSTANTIATE_TEST_SUITE_P(All,
ManifestIconSelectorTest,
::testing::Bool());
} // namespace blink
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