base/i18n/number_formatting_unittest.cc

   1 // Copyright 2011 The Chromium Authors
   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 <stddef.h>
   6 #include <stdint.h>
   7
   8 #include <limits>
   9
  10 #include "base/i18n/number_formatting.h"
  11 #include "base/i18n/rtl.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/test/icu_test_util.h"
  14 #include "build/build_config.h"
  15 #include "testing/gtest/include/gtest/gtest.h"
  16 #include "third_party/icu/source/i18n/unicode/usearch.h"
  17
  18 namespace base {
  19 namespace {
  20
  21 TEST(NumberFormattingTest, FormatNumber) {
  22   static const struct {
  23     int64_t number;
  24     const char* expected_english;
  25     const char* expected_german;
  26   } cases[] = {
  27     {0, "0", "0"},
  28     {1024, "1,024", "1.024"},
  29     {std::numeric_limits<int64_t>::max(),
  30         "9,223,372,036,854,775,807", "9.223.372.036.854.775.807"},
  31     {std::numeric_limits<int64_t>::min(),
  32         "-9,223,372,036,854,775,808", "-9.223.372.036.854.775.808"},
  33     {-42, "-42", "-42"},
  34   };
  35
  36   test::ScopedRestoreICUDefaultLocale restore_locale;
  37
  38   for (const auto& i : cases) {
  39     i18n::SetICUDefaultLocale("en");
  40     ResetFormattersForTesting();
  41     EXPECT_EQ(i.expected_english, UTF16ToUTF8(FormatNumber(i.number)));
  42     i18n::SetICUDefaultLocale("de");
  43     ResetFormattersForTesting();
  44     EXPECT_EQ(i.expected_german, UTF16ToUTF8(FormatNumber(i.number)));
  45   }
  46 }
  47
  48 TEST(NumberFormattingTest, FormatDoubleWithFixedFractionalDigits) {
  49   static const struct {
  50     double number;
  51     int frac_digits;
  52     const char* expected_english;
  53     const char* expected_german;
  54   } cases[] = {
  55     {0.0, 0, "0", "0"},
  56 #if !BUILDFLAG(IS_ANDROID)
  57     // Bionic can't printf negative zero correctly.
  58     {-0.0, 4, "-0.0000", "-0,0000"},
  59 #endif
  60     {1024.2, 0, "1,024", "1.024"},
  61     {-1024.223, 2, "-1,024.22", "-1.024,22"},
  62     {std::numeric_limits<double>::max(), 6,
  63      "179,769,313,486,231,570,000,000,000,000,000,000,000,000,000,000,000,"
  64      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  65      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  66      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  67      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  68      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  69      "000.000000",
  70      "179.769.313.486.231.570.000.000.000.000.000.000.000.000.000.000.000."
  71      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  72      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  73      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  74      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  75      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  76      "000,000000"},
  77     {std::numeric_limits<double>::min(), 2, "0.00", "0,00"},
  78     {-42.7, 3, "-42.700", "-42,700"},
  79   };
  80
  81   test::ScopedRestoreICUDefaultLocale restore_locale;
  82   for (const auto& i : cases) {
  83     i18n::SetICUDefaultLocale("en");
  84     ResetFormattersForTesting();
  85     EXPECT_EQ(i.expected_english,
  86               UTF16ToUTF8(FormatDouble(i.number, i.frac_digits)));
  87     i18n::SetICUDefaultLocale("de");
  88     ResetFormattersForTesting();
  89     EXPECT_EQ(i.expected_german,
  90               UTF16ToUTF8(FormatDouble(i.number, i.frac_digits)));
  91   }
  92 }
  93
  94 TEST(NumberFormattingTest, FormatDoubleWithFractionalDigitRange) {
  95   static const struct {
  96     double number;
  97     int min_frac_digits;
  98     int max_frac_digits;
  99     const char* expected_english;
 100     const char* expected_german;
 101   } cases[] = {
 102     {0.0, 0, 0, "0", "0"},
 103 #if !BUILDFLAG(IS_ANDROID)
 104     // Bionic can't printf negative zero correctly.
 105     {-0.0, 0, 4, "-0", "-0"},
 106 #endif
 107     {1024.2, 0, 0, "1,024", "1.024"},
 108     {-1024.223, 0, 2, "-1,024.22", "-1.024,22"},
 109     {std::numeric_limits<double>::max(), 0, 6,
 110      "179,769,313,486,231,570,000,000,000,000,000,000,000,000,000,000,000,"
 111      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
 112      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
 113      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
 114      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
 115      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
 116      "000",
 117      "179.769.313.486.231.570.000.000.000.000.000.000.000.000.000.000.000."
 118      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
 119      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
 120      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
 121      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
 122      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
 123      "000"},
 124     {std::numeric_limits<double>::min(), 2, 2, "0.00", "0,00"},
 125     {-42.7, 0, 3, "-42.7", "-42,7"},
 126   };
 127
 128   test::ScopedRestoreICUDefaultLocale restore_locale;
 129   for (const auto& i : cases) {
 130     i18n::SetICUDefaultLocale("en");
 131     ResetFormattersForTesting();
 132     EXPECT_EQ(i.expected_english,
 133               UTF16ToUTF8(FormatDouble(i.number, i.min_frac_digits,
 134                                        i.max_frac_digits)));
 135     i18n::SetICUDefaultLocale("de");
 136     ResetFormattersForTesting();
 137     EXPECT_EQ(i.expected_german,
 138               UTF16ToUTF8(FormatDouble(i.number, i.min_frac_digits,
 139                                        i.max_frac_digits)));
 140   }
 141 }
 142
 143 TEST(NumberFormattingTest, FormatPercent) {
 144   static const struct {
 145     int64_t number;
 146     const char* expected_english;
 147     const char* expected_german;  // Note: Space before % isn't \x20.
 148     // Note: Eastern Arabic-Indic digits (U+06Fx) for Persian and
 149     // Arabic-Indic digits (U+066x) for Arabic in Egypt(ar-EG). In Arabic (ar),
 150     // uses European digits (Google-patch).
 151     // See https://unicode.org/cldr/trac/ticket/9040 for details.
 152     // See also https://unicode.org/cldr/trac/ticket/10176 .
 153     // For now, take what CLDR 32 has (percent sign to the right of
 154     // a number in Persian).
 155     const char* expected_persian;
 156     const char* expected_arabic;
 157     const char* expected_arabic_egypt;
 158   } cases[] = {
 159       {0, "0%", "0\u00a0%", "\u06f0\u066a", "0\u200e%\u200e",
 160        "\u0660\u066a\u061c"},
 161       {42, "42%", "42\u00a0%", "\u06f4\u06f2\u066a", "42\u200e%\u200e",
 162        "\u0664\u0662\u066a\u061c"},
 163       {1024, "1,024%", "1.024\u00a0%", "\u06f1\u066c\u06f0\u06f2\u06f4\u066a",
 164        "1,024\u200e%\u200e", "\u0661\u066c\u0660\u0662\u0664\u066a\u061c"},
 165   };
 166
 167   test::ScopedRestoreICUDefaultLocale restore_locale;
 168   for (const auto& i : cases) {
 169     i18n::SetICUDefaultLocale("en");
 170     EXPECT_EQ(ASCIIToUTF16(i.expected_english), FormatPercent(i.number));
 171     i18n::SetICUDefaultLocale("de");
 172     EXPECT_EQ(UTF8ToUTF16(i.expected_german), FormatPercent(i.number));
 173     i18n::SetICUDefaultLocale("fa");
 174     EXPECT_EQ(UTF8ToUTF16(i.expected_persian), FormatPercent(i.number));
 175     i18n::SetICUDefaultLocale("ar");
 176     EXPECT_EQ(UTF8ToUTF16(i.expected_arabic), FormatPercent(i.number));
 177     i18n::SetICUDefaultLocale("ar-EG");
 178     EXPECT_EQ(UTF8ToUTF16(i.expected_arabic_egypt), FormatPercent(i.number));
 179   }
 180 }
 181
 182 }  // namespace
 183 }  // namespace base