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// Copyright 2014 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/renderer/platform/fonts/font_cache.h"
#include <unicode/unistr.h>
#include <string>
#include <tuple>
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/renderer/platform/fonts/font_description.h"
#include "third_party/blink/renderer/platform/fonts/simple_font_data.h"
#include "third_party/blink/renderer/platform/testing/font_test_base.h"
#include "third_party/blink/renderer/platform/testing/testing_platform_support.h"
namespace blink {
namespace {
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
StringView MaybeStripFontationsSuffix(const String& font_name) {
wtf_size_t found_index = font_name.ReverseFind(" (Fontations)");
if (found_index != WTF::kNotFound) {
return StringView(font_name, 0, found_index);
} else {
return font_name;
}
}
#endif
} // namespace
class FontCacheTest : public FontTestBase {};
TEST_F(FontCacheTest, getLastResortFallbackFont) {
FontCache& font_cache = FontCache::Get();
// Perform the test for the default font family (kStandardFamily) and the
// -webkit-body font family (kWebkitBodyFamily) since they behave the same in
// term of font/glyph selection.
// TODO(crbug.com/1065468): Remove the test for kWebkitBodyFamily when
// -webkit-body in unshipped.
for (FontDescription::GenericFamilyType family_type :
{FontDescription::kStandardFamily, FontDescription::kWebkitBodyFamily,
FontDescription::kSansSerifFamily}) {
FontDescription font_description;
font_description.SetGenericFamily(family_type);
const SimpleFontData* font_data =
font_cache.GetLastResortFallbackFont(font_description);
EXPECT_TRUE(font_data);
}
}
TEST_F(FontCacheTest, NoFallbackForPrivateUseArea) {
FontCache& font_cache = FontCache::Get();
// Perform the test for the default font family (kStandardFamily) and the
// -webkit-body font family (kWebkitBodyFamily) since they behave the same in
// term of font/glyph selection.
// TODO(crbug.com/1065468): Remove the test for kWebkitBodyFamily when
// -webkit-body in unshipped.
for (FontDescription::GenericFamilyType family_type :
{FontDescription::kStandardFamily, FontDescription::kWebkitBodyFamily}) {
FontDescription font_description;
font_description.SetGenericFamily(family_type);
for (UChar32 character : {0xE000, 0xE401, 0xE402, 0xE403, 0xF8FF, 0xF0000,
0xFAAAA, 0x100000, 0x10AAAA}) {
const SimpleFontData* font_data = font_cache.FallbackFontForCharacter(
font_description, character, nullptr);
EXPECT_EQ(font_data, nullptr);
}
}
}
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
TEST_F(FontCacheTest, FallbackForEmojis) {
FontCache& font_cache = FontCache::Get();
FontCachePurgePreventer purge_preventer;
// Perform the test for the default font family (kStandardFamily) and the
// -webkit-body font family (kWebkitBodyFamily) since they behave the same in
// term of font/glyph selection.
// TODO(crbug.com/1065468): Remove the test for kWebkitBodyFamily when
// -webkit-body in unshipped.
for (FontDescription::GenericFamilyType family_type :
{FontDescription::kStandardFamily, FontDescription::kWebkitBodyFamily}) {
FontDescription font_description;
font_description.SetGenericFamily(family_type);
static constexpr char kNotoColorEmoji[] = "Noto Color Emoji";
// We should use structured binding when it becomes available...
for (auto info : {
std::pair<UChar32, bool>{U'☺', true},
{U'👪', true},
{U'🤣', false},
}) {
UChar32 character = info.first;
// Set to true if the installed contour fonts support this glyph.
bool available_in_contour_font = info.second;
std::string character_utf8;
icu::UnicodeString(character).toUTF8String(character_utf8);
{
const SimpleFontData* font_data = font_cache.FallbackFontForCharacter(
font_description, character, nullptr,
FontFallbackPriority::kEmojiEmoji);
EXPECT_EQ(MaybeStripFontationsSuffix(
font_data->PlatformData().FontFamilyName()),
kNotoColorEmoji)
<< "Character " << character_utf8
<< " doesn't match what we expected for kEmojiEmoji.";
}
{
const SimpleFontData* font_data = font_cache.FallbackFontForCharacter(
font_description, character, nullptr,
FontFallbackPriority::kEmojiText);
if (available_in_contour_font) {
EXPECT_NE(MaybeStripFontationsSuffix(
font_data->PlatformData().FontFamilyName()),
kNotoColorEmoji)
<< "Character " << character_utf8
<< " doesn't match what we expected for kEmojiText.";
} else {
EXPECT_EQ(MaybeStripFontationsSuffix(
font_data->PlatformData().FontFamilyName()),
kNotoColorEmoji)
<< "Character " << character_utf8
<< " doesn't match what we expected for kEmojiText.";
}
}
}
}
}
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
TEST_F(FontCacheTest, firstAvailableOrFirst) {
EXPECT_TRUE(FontCache::FirstAvailableOrFirst("").empty());
EXPECT_TRUE(FontCache::FirstAvailableOrFirst(String()).empty());
EXPECT_EQ("Arial", FontCache::FirstAvailableOrFirst("Arial"));
EXPECT_EQ("not exist", FontCache::FirstAvailableOrFirst("not exist"));
EXPECT_EQ("Arial", FontCache::FirstAvailableOrFirst("Arial, not exist"));
EXPECT_EQ("Arial", FontCache::FirstAvailableOrFirst("not exist, Arial"));
EXPECT_EQ("Arial",
FontCache::FirstAvailableOrFirst("not exist, Arial, not exist"));
EXPECT_EQ("not exist",
FontCache::FirstAvailableOrFirst("not exist, not exist 2"));
EXPECT_EQ("Arial", FontCache::FirstAvailableOrFirst(", not exist, Arial"));
EXPECT_EQ("not exist",
FontCache::FirstAvailableOrFirst(", not exist, not exist"));
}
TEST_F(FontCacheTest, FontUniqueNameMatchAvailable) {
FontCache& font_cache = FontCache::Get();
FontDescription font_description;
font_description.SetGenericFamily(FontDescription::kStandardFamily);
font_description.SetComputedSize(12.f);
FontFaceCreationParams creation_params;
EXPECT_FALSE(font_cache.IsPlatformFontUniqueNameMatchAvailable(
font_description, AtomicString()));
EXPECT_TRUE(font_cache.IsPlatformFontUniqueNameMatchAvailable(
font_description, AtomicString("Arial")));
EXPECT_FALSE(font_cache.IsPlatformFontUniqueNameMatchAvailable(
font_description, AtomicString("INVALID_FONT_NAME")));
}
// Unfortunately, we can't ensure a font here since on Android and Mac the
// unittests can't access the font configuration. However, this test passes
// when it's not crashing in FontCache.
#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
#define MAYBE_GetLargerThanMaxUnsignedFont DISABLED_GetLargerThanMaxUnsignedFont
#else
#define MAYBE_GetLargerThanMaxUnsignedFont GetLargerThanMaxUnsignedFont
#endif
// https://crbug.com/969402
TEST_F(FontCacheTest, MAYBE_GetLargerThanMaxUnsignedFont) {
FontCache& font_cache = FontCache::Get();
FontDescription font_description;
font_description.SetGenericFamily(FontDescription::kStandardFamily);
font_description.SetComputedSize(
static_cast<float>(std::numeric_limits<unsigned>::max()) + 1.f);
FontFaceCreationParams creation_params;
const blink::SimpleFontData* font_data =
font_cache.GetFontData(font_description, AtomicString());
EXPECT_TRUE(font_data);
}
#if !BUILDFLAG(IS_MAC)
TEST_F(FontCacheTest, systemFont) {
FontCache::SystemFontFamily();
// Test the function does not crash. Return value varies by system and config.
}
#endif
#if BUILDFLAG(IS_ANDROID)
TEST_F(FontCacheTest, Locale) {
FontCacheKey key1(FontFaceCreationParams(), /* font_size */ 16,
/* options */ 0, /* device_scale_factor */ 1.0f,
/* size_adjust */ FontSizeAdjust(),
/* variation_settings */ nullptr,
/* palette */ nullptr,
/* variant_alternates */ nullptr,
/* is_unique_match */ false);
FontCacheKey key2 = key1;
EXPECT_EQ(key1.GetHash(), key2.GetHash());
EXPECT_EQ(key1, key2);
key2.SetLocale(AtomicString("ja"));
EXPECT_NE(key1.GetHash(), key2.GetHash());
EXPECT_NE(key1, key2);
}
#endif // BUILDFLAG(IS_ANDROID)
} // namespace blink
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