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// Copyright (c) 2011 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/language_usage_metrics.h"
#include "testing/gtest/include/gtest/gtest.h"
TEST(LanguageUsageMetricsTest, ParseAcceptLanguages) {
std::set<int> language_set;
std::set<int>::const_iterator it;
const int ENGLISH = 25966;
const int SPANISH = 25971;
const int JAPANESE = 27233;
// Basic single language case.
LanguageUsageMetrics::ParseAcceptLanguages("ja", &language_set);
EXPECT_EQ(1U, language_set.size());
EXPECT_EQ(JAPANESE, *language_set.begin());
// Empty language.
LanguageUsageMetrics::ParseAcceptLanguages(std::string(), &language_set);
EXPECT_EQ(0U, language_set.size());
// Country code is ignored.
LanguageUsageMetrics::ParseAcceptLanguages("ja-JP", &language_set);
EXPECT_EQ(1U, language_set.size());
EXPECT_EQ(JAPANESE, *language_set.begin());
// Case is ignored.
LanguageUsageMetrics::ParseAcceptLanguages("Ja-jP", &language_set);
EXPECT_EQ(1U, language_set.size());
EXPECT_EQ(JAPANESE, *language_set.begin());
// Underscore as the separator.
LanguageUsageMetrics::ParseAcceptLanguages("ja_JP", &language_set);
EXPECT_EQ(1U, language_set.size());
EXPECT_EQ(JAPANESE, *language_set.begin());
// The result contains a same language code only once.
LanguageUsageMetrics::ParseAcceptLanguages("ja-JP,ja", &language_set);
EXPECT_EQ(1U, language_set.size());
EXPECT_EQ(JAPANESE, *language_set.begin());
// Basic two languages case.
LanguageUsageMetrics::ParseAcceptLanguages("en,ja", &language_set);
EXPECT_EQ(2U, language_set.size());
it = language_set.begin();
EXPECT_EQ(ENGLISH, *it);
EXPECT_EQ(JAPANESE, *++it);
// Multiple languages.
LanguageUsageMetrics::ParseAcceptLanguages("ja-JP,en,es,ja,en-US",
&language_set);
EXPECT_EQ(3U, language_set.size());
it = language_set.begin();
EXPECT_EQ(ENGLISH, *it);
EXPECT_EQ(SPANISH, *++it);
EXPECT_EQ(JAPANESE, *++it);
// Two empty languages.
LanguageUsageMetrics::ParseAcceptLanguages(",", &language_set);
EXPECT_EQ(0U, language_set.size());
// Trailing comma.
LanguageUsageMetrics::ParseAcceptLanguages("ja,", &language_set);
EXPECT_EQ(1U, language_set.size());
EXPECT_EQ(JAPANESE, *language_set.begin());
// Leading comma.
LanguageUsageMetrics::ParseAcceptLanguages(",es", &language_set);
EXPECT_EQ(1U, language_set.size());
EXPECT_EQ(SPANISH, *language_set.begin());
// Combination of invalid and valid.
LanguageUsageMetrics::ParseAcceptLanguages("1234,en", &language_set);
EXPECT_EQ(1U, language_set.size());
it = language_set.begin();
EXPECT_EQ(ENGLISH, *it);
}
TEST(LanguageUsageMetricsTest, ToLanguageCode) {
const int SPANISH = 25971;
const int JAPANESE = 27233;
// Basic case.
EXPECT_EQ(JAPANESE, LanguageUsageMetrics::ToLanguageCode("ja"));
// Case is ignored.
EXPECT_EQ(SPANISH, LanguageUsageMetrics::ToLanguageCode("Es"));
// Coutry code is ignored.
EXPECT_EQ(JAPANESE, LanguageUsageMetrics::ToLanguageCode("ja-JP"));
// Invalid locales are considered as unknown language.
EXPECT_EQ(0, LanguageUsageMetrics::ToLanguageCode(std::string()));
EXPECT_EQ(0, LanguageUsageMetrics::ToLanguageCode("1234"));
// "xx" is not acceptable because it doesn't exist in ISO 639-1 table.
// However, LanguageUsageMetrics doesn't tell what code is valid.
EXPECT_EQ(30840, LanguageUsageMetrics::ToLanguageCode("xx"));
}
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