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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/font_fallback_win.h"
#include <string_view>
#include "base/test/task_environment.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gfx {
namespace {
const char kDefaultApplicationLocale[] = "us-en";
class FontFallbackWinTest : public testing::Test {
public:
FontFallbackWinTest() = default;
FontFallbackWinTest(const FontFallbackWinTest&) = delete;
FontFallbackWinTest& operator=(const FontFallbackWinTest&) = delete;
private:
// Needed to bypass DCHECK in GetFallbackFont.
base::test::TaskEnvironment task_environment_{
base::test::TaskEnvironment::MainThreadType::UI};
};
} // namespace
TEST_F(FontFallbackWinTest, ParseFontLinkEntry) {
std::string file;
std::string font;
internal::ParseFontLinkEntry("TAHOMA.TTF", &file, &font);
EXPECT_EQ("TAHOMA.TTF", file);
EXPECT_EQ("", font);
internal::ParseFontLinkEntry("MSGOTHIC.TTC,MS UI Gothic", &file, &font);
EXPECT_EQ("MSGOTHIC.TTC", file);
EXPECT_EQ("MS UI Gothic", font);
internal::ParseFontLinkEntry("MALGUN.TTF,128,96", &file, &font);
EXPECT_EQ("MALGUN.TTF", file);
EXPECT_EQ("", font);
internal::ParseFontLinkEntry("MEIRYO.TTC,Meiryo,128,85", &file, &font);
EXPECT_EQ("MEIRYO.TTC", file);
EXPECT_EQ("Meiryo", font);
}
TEST_F(FontFallbackWinTest, ParseFontFamilyString) {
std::vector<std::string> font_names;
internal::ParseFontFamilyString("Times New Roman (TrueType)", &font_names);
ASSERT_EQ(1U, font_names.size());
EXPECT_EQ("Times New Roman", font_names[0]);
font_names.clear();
internal::ParseFontFamilyString("Cambria & Cambria Math (TrueType)",
&font_names);
ASSERT_EQ(2U, font_names.size());
EXPECT_EQ("Cambria", font_names[0]);
EXPECT_EQ("Cambria Math", font_names[1]);
font_names.clear();
internal::ParseFontFamilyString(
"Meiryo & Meiryo Italic & Meiryo UI & Meiryo UI Italic (TrueType)",
&font_names);
ASSERT_EQ(4U, font_names.size());
EXPECT_EQ("Meiryo", font_names[0]);
EXPECT_EQ("Meiryo Italic", font_names[1]);
EXPECT_EQ("Meiryo UI", font_names[2]);
EXPECT_EQ("Meiryo UI Italic", font_names[3]);
}
TEST_F(FontFallbackWinTest, EmptyStringFallback) {
Font base_font;
Font fallback_font;
bool result = GetFallbackFont(base_font, kDefaultApplicationLocale,
std::u16string_view(), &fallback_font);
EXPECT_FALSE(result);
}
TEST_F(FontFallbackWinTest, NulTerminatedStringPiece) {
Font base_font;
Font fallback_font;
// Multiple ending NUL characters.
const char16_t kTest1[] = {0x0540, 0x0541, 0, 0, 0};
EXPECT_FALSE(GetFallbackFont(base_font, kDefaultApplicationLocale,
std::u16string_view(kTest1, std::size(kTest1)),
&fallback_font));
// No ending NUL character.
const char16_t kTest2[] = {0x0540, 0x0541};
EXPECT_TRUE(GetFallbackFont(base_font, kDefaultApplicationLocale,
std::u16string_view(kTest2, std::size(kTest2)),
&fallback_font));
// NUL only characters.
const char16_t kTest3[] = {0, 0, 0};
EXPECT_FALSE(GetFallbackFont(base_font, kDefaultApplicationLocale,
std::u16string_view(kTest3, std::size(kTest3)),
&fallback_font));
}
TEST_F(FontFallbackWinTest, CJKLocaleFallback) {
// Han unification is an effort to map multiple character sets of the CJK
// languages into a single set of unified characters. Han characters are a
// common feature of written Chinese (hanzi), Japanese (kanji), and Korean
// (hanja). The same text will be rendered using a different font based on
// locale.
const char16_t kCJKTest[] = u"\u8AA4\u904E\u9AA8";
Font base_font;
Font fallback_font;
EXPECT_TRUE(GetFallbackFont(base_font, "zh-CN", kCJKTest, &fallback_font));
EXPECT_EQ(fallback_font.GetFontName(), "Microsoft YaHei UI");
EXPECT_TRUE(GetFallbackFont(base_font, "zh-TW", kCJKTest, &fallback_font));
EXPECT_EQ(fallback_font.GetFontName(), "Microsoft JhengHei UI");
EXPECT_TRUE(GetFallbackFont(base_font, "zh-HK", kCJKTest, &fallback_font));
EXPECT_EQ(fallback_font.GetFontName(), "Microsoft JhengHei UI");
EXPECT_TRUE(GetFallbackFont(base_font, "ja", kCJKTest, &fallback_font));
EXPECT_EQ(fallback_font.GetFontName(), "Yu Gothic UI");
EXPECT_TRUE(GetFallbackFont(base_font, "ja-JP", kCJKTest, &fallback_font));
EXPECT_EQ(fallback_font.GetFontName(), "Yu Gothic UI");
EXPECT_TRUE(GetFallbackFont(base_font, "ko", kCJKTest, &fallback_font));
EXPECT_EQ(fallback_font.GetFontName(), "Malgun Gothic");
EXPECT_TRUE(GetFallbackFont(base_font, "ko-KR", kCJKTest, &fallback_font));
EXPECT_EQ(fallback_font.GetFontName(), "Malgun Gothic");
}
} // namespace gfx
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