third_party/WebKit/Source/platform/fonts/AcceptLanguagesResolverTest.cpp

// Copyright 2016 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 "platform/fonts/AcceptLanguagesResolver.h"

#include "platform/LayoutLocale.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace blink {

TEST(AcceptLanguagesResolverTest, AcceptLanguagesChanged)
{
    struct {
        const char* acceptLanguages;
        UScriptCode script;
        const char* locale;
    } tests[] = {
        // Non-Han script cases.
        { "", USCRIPT_COMMON, nullptr },
        { "en-US", USCRIPT_COMMON, nullptr },
        { ",en-US", USCRIPT_COMMON, nullptr },

        // Single value cases.
        { "ja-JP", USCRIPT_KATAKANA_OR_HIRAGANA, "ja-jp" },
        { "ko-KR", USCRIPT_HANGUL, "ko-kr" },
        { "zh-CN", USCRIPT_SIMPLIFIED_HAN, "zh-Hans" },
        { "zh-HK", USCRIPT_TRADITIONAL_HAN, "zh-Hant" },
        { "zh-TW", USCRIPT_TRADITIONAL_HAN, "zh-Hant" },

        // Language only.
        { "ja", USCRIPT_KATAKANA_OR_HIRAGANA, "ja-jp" },
        { "ko", USCRIPT_HANGUL, "ko-kr" },
        { "zh", USCRIPT_SIMPLIFIED_HAN, "zh-Hans" },

        // Unusual combinations.
        { "en-JP", USCRIPT_KATAKANA_OR_HIRAGANA, "ja-jp" },

        // Han scripts not in the first item.
        { "en-US,ja-JP", USCRIPT_KATAKANA_OR_HIRAGANA, "ja-jp" },
        { "en-US,en-JP", USCRIPT_KATAKANA_OR_HIRAGANA, "ja-jp" },

        // Multiple Han scripts. The first one wins.
        { "ja-JP,zh-CN", USCRIPT_KATAKANA_OR_HIRAGANA, "ja-jp" },
        { "zh-TW,ja-JP", USCRIPT_TRADITIONAL_HAN, "zh-Hant" },
    };

    for (const auto& test : tests) {
        const LayoutLocale* locale =
            AcceptLanguagesResolver::localeForHanFromAcceptLanguages(
                test.acceptLanguages);

        if (test.script == USCRIPT_COMMON) {
            EXPECT_EQ(nullptr, locale) << test.acceptLanguages;
            continue;
        }

        ASSERT_NE(nullptr, locale) << test.acceptLanguages;
        EXPECT_EQ(test.script, locale->scriptForHan()) << test.acceptLanguages;
        EXPECT_STRCASEEQ(test.locale, locale->localeForHanForSkFontMgr())
            << test.acceptLanguages;
    }
}

} // namespace blink