base/i18n/number_formatting_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 <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/macros.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "base/test/icu_test_util.h"
  15 #include "build/build_config.h"
  16 #include "testing/gtest/include/gtest/gtest.h"
  17 #include "third_party/icu/source/i18n/unicode/usearch.h"
  18
  19 namespace base {
  20 namespace {
  21
  22 TEST(NumberFormattingTest, FormatNumber) {
  23   static const struct {
  24     int64_t number;
  25     const char* expected_english;
  26     const char* expected_german;
  27   } cases[] = {
  28     {0, "0", "0"},
  29     {1024, "1,024", "1.024"},
  30     {std::numeric_limits<int64_t>::max(),
  31         "9,223,372,036,854,775,807", "9.223.372.036.854.775.807"},
  32     {std::numeric_limits<int64_t>::min(),
  33         "-9,223,372,036,854,775,808", "-9.223.372.036.854.775.808"},
  34     {-42, "-42", "-42"},
  35   };
  36
  37   test::ScopedRestoreICUDefaultLocale restore_locale;
  38
  39   for (size_t i = 0; i < arraysize(cases); ++i) {
  40     i18n::SetICUDefaultLocale("en");
  41     testing::ResetFormatters();
  42     EXPECT_EQ(cases[i].expected_english,
  43               UTF16ToUTF8(FormatNumber(cases[i].number)));
  44     i18n::SetICUDefaultLocale("de");
  45     testing::ResetFormatters();
  46     EXPECT_EQ(cases[i].expected_german,
  47               UTF16ToUTF8(FormatNumber(cases[i].number)));
  48   }
  49 }
  50
  51 TEST(NumberFormattingTest, FormatDouble) {
  52   static const struct {
  53     double number;
  54     int frac_digits;
  55     const char* expected_english;
  56     const char* expected_german;
  57   } cases[] = {
  58     {0.0, 0, "0", "0"},
  59 #if !defined(OS_ANDROID)
  60     // Bionic can't printf negative zero correctly.
  61     {-0.0, 4, "-0.0000", "-0,0000"},
  62 #endif
  63     {1024.2, 0, "1,024", "1.024"},
  64     {-1024.223, 2, "-1,024.22", "-1.024,22"},
  65     {std::numeric_limits<double>::max(), 6,
  66      "179,769,313,486,231,570,000,000,000,000,000,000,000,000,000,000,000,"
  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      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  70      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  71      "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  72      "000.000000",
  73      "179.769.313.486.231.570.000.000.000.000.000.000.000.000.000.000.000."
  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      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  77      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  78      "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  79      "000,000000"},
  80     {std::numeric_limits<double>::min(), 2, "0.00", "0,00"},
  81     {-42.7, 3, "-42.700", "-42,700"},
  82   };
  83
  84   test::ScopedRestoreICUDefaultLocale restore_locale;
  85   for (size_t i = 0; i < arraysize(cases); ++i) {
  86     i18n::SetICUDefaultLocale("en");
  87     testing::ResetFormatters();
  88     EXPECT_EQ(cases[i].expected_english,
  89               UTF16ToUTF8(FormatDouble(cases[i].number, cases[i].frac_digits)));
  90     i18n::SetICUDefaultLocale("de");
  91     testing::ResetFormatters();
  92     EXPECT_EQ(cases[i].expected_german,
  93               UTF16ToUTF8(FormatDouble(cases[i].number, cases[i].frac_digits)));
  94   }
  95 }
  96
  97 TEST(NumberFormattingTest, FormatPercent) {
  98   static const struct {
  99     int64_t number;
 100     const char* expected_english;
 101     const char* expected_german;  // Note: Space before % isn't \x20.
 102     // Note: Eastern Arabic-Indic digits (U+06Fx) for Persian and
 103     // Arabic-Indic digits (U+066x) for Arabic in Egypt(ar-EG). In Arabic (ar),
 104     // uses European digits (Google-patch).
 105     // See https://unicode.org/cldr/trac/ticket/9040 for details.
 106     // See also https://unicode.org/cldr/trac/ticket/10176 .
 107     // For now, take what CLDR 32 has (percent sign to the right of
 108     // a number in Persian).
 109     const char* expected_persian;
 110     const char* expected_arabic;
 111     const char* expected_arabic_egypt;
 112   } cases[] = {
 113       {0, "0%", u8"0\u00a0%", u8"\u06f0\u066a", u8"0\u200e%\u200e",
 114        u8"\u0660\u066a\u061c"},
 115       {42, "42%", "42\u00a0%", u8"\u06f4\u06f2\u066a", u8"42\u200e%\u200e",
 116        "\u0664\u0662\u066a\u061c"},
 117       {1024, "1,024%", "1.024\u00a0%", u8"\u06f1\u066c\u06f0\u06f2\u06f4\u066a",
 118        "1,024\u200e%\u200e", "\u0661\u066c\u0660\u0662\u0664\u066a\u061c"},
 119   };
 120
 121   test::ScopedRestoreICUDefaultLocale restore_locale;
 122   for (size_t i = 0; i < arraysize(cases); ++i) {
 123     i18n::SetICUDefaultLocale("en");
 124     EXPECT_EQ(ASCIIToUTF16(cases[i].expected_english),
 125               FormatPercent(cases[i].number));
 126     i18n::SetICUDefaultLocale("de");
 127     EXPECT_EQ(UTF8ToUTF16(cases[i].expected_german),
 128               FormatPercent(cases[i].number));
 129     i18n::SetICUDefaultLocale("fa");
 130     EXPECT_EQ(UTF8ToUTF16(cases[i].expected_persian),
 131               FormatPercent(cases[i].number));
 132     i18n::SetICUDefaultLocale("ar");
 133     EXPECT_EQ(UTF8ToUTF16(cases[i].expected_arabic),
 134               FormatPercent(cases[i].number));
 135     i18n::SetICUDefaultLocale("ar-EG");
 136     EXPECT_EQ(UTF8ToUTF16(cases[i].expected_arabic_egypt),
 137               FormatPercent(cases[i].number));
 138   }
 139 }
 140
 141 }  // namespace
 142 }  // namespace base