chrome/browser/language_usage_metrics_unittest.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/language_usage_metrics.h"
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8
   9 TEST(LanguageUsageMetricsTest, ParseAcceptLanguages) {
  10   std::set<Language> language_set;
  11   std::set<Language>::const_iterator it;
  12
  13   // Basic single language case.
  14   LanguageUsageMetrics::ParseAcceptLanguages("ja", &language_set);
  15   EXPECT_EQ(1U, language_set.size());
  16   EXPECT_EQ(JAPANESE, *language_set.begin());
  17
  18   // Empty language.
  19   LanguageUsageMetrics::ParseAcceptLanguages(std::string(), &language_set);
  20   EXPECT_EQ(0U, language_set.size());
  21
  22   // Country code is ignored.
  23   LanguageUsageMetrics::ParseAcceptLanguages("ja-JP", &language_set);
  24   EXPECT_EQ(1U, language_set.size());
  25   EXPECT_EQ(JAPANESE, *language_set.begin());
  26
  27   // Case is ignored.
  28   LanguageUsageMetrics::ParseAcceptLanguages("Ja-jP", &language_set);
  29   EXPECT_EQ(1U, language_set.size());
  30   EXPECT_EQ(JAPANESE, *language_set.begin());
  31
  32   // Underscore as the separator.
  33   LanguageUsageMetrics::ParseAcceptLanguages("ja_JP", &language_set);
  34   EXPECT_EQ(1U, language_set.size());
  35   EXPECT_EQ(JAPANESE, *language_set.begin());
  36
  37   // The result contains a same language code only once.
  38   LanguageUsageMetrics::ParseAcceptLanguages("ja-JP,ja", &language_set);
  39   EXPECT_EQ(1U, language_set.size());
  40   EXPECT_EQ(JAPANESE, *language_set.begin());
  41
  42   // Basic two languages case.
  43   LanguageUsageMetrics::ParseAcceptLanguages("en,ja", &language_set);
  44   EXPECT_EQ(2U, language_set.size());
  45   it = language_set.begin();
  46   EXPECT_EQ(ENGLISH, *it);
  47   EXPECT_EQ(JAPANESE, *++it);
  48
  49   // Multiple languages.
  50   LanguageUsageMetrics::ParseAcceptLanguages("ja-JP,en,es,ja,en-US",
  51                                              &language_set);
  52   EXPECT_EQ(3U, language_set.size());
  53   it = language_set.begin();
  54   EXPECT_EQ(ENGLISH, *it);
  55   EXPECT_EQ(JAPANESE, *++it);
  56   EXPECT_EQ(SPANISH, *++it);
  57
  58   // Two empty languages.
  59   LanguageUsageMetrics::ParseAcceptLanguages(",", &language_set);
  60   EXPECT_EQ(0U, language_set.size());
  61
  62   // Trailing comma.
  63   LanguageUsageMetrics::ParseAcceptLanguages("ja,", &language_set);
  64   EXPECT_EQ(1U, language_set.size());
  65   EXPECT_EQ(JAPANESE, *language_set.begin());
  66
  67   // Leading comma.
  68   LanguageUsageMetrics::ParseAcceptLanguages(",es", &language_set);
  69   EXPECT_EQ(1U, language_set.size());
  70   EXPECT_EQ(SPANISH, *language_set.begin());
  71
  72   // Combination of invalid and valid.
  73   LanguageUsageMetrics::ParseAcceptLanguages("zz,en", &language_set);
  74   EXPECT_EQ(1U, language_set.size());
  75   EXPECT_EQ(ENGLISH, *language_set.begin());
  76 }
  77
  78 TEST(LanguageUsageMetricsTest, ToLanguage) {
  79   // Basic case.
  80   EXPECT_EQ(JAPANESE, LanguageUsageMetrics::ToLanguage("ja"));
  81
  82   // Case is ignored.
  83   EXPECT_EQ(SPANISH, LanguageUsageMetrics::ToLanguage("Es"));
  84
  85   // Coutry code is ignored.
  86   EXPECT_EQ(JAPANESE, LanguageUsageMetrics::ToLanguage("ja-JP"));
  87
  88   // Invalid locales are considered as unknown language.
  89   EXPECT_EQ(UNKNOWN_LANGUAGE, LanguageUsageMetrics::ToLanguage(std::string()));
  90   EXPECT_EQ(UNKNOWN_LANGUAGE, LanguageUsageMetrics::ToLanguage("xx"));
  91 }