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         "179,769,313,486,232,000,000,000,000,000,000,000,000,000,000,000,000,"
  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         "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  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         "179.769.313.486.232.000.000.000.000.000.000.000.000.000.000.000.000."
  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         "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  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 wchar_t* 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.
 104     // See https://unicode.org/cldr/trac/ticket/9040 for details.
 105     // See also https://unicode.org/cldr/trac/ticket/10176 .
 106     // For now, take what CLDR 32 has (percent sign to the right of
 107     // a number in Persian).
 108     const wchar_t* expected_persian;
 109     const wchar_t* expected_arabic;
 110   } cases[] = {
 111     {0, "0%", L"0\xa0%", L"\x6f0\x66a", L"\x660\xa0\x66a\x61c"},
 112     {42, "42%", L"42\xa0%", L"\x6f4\x6f2\x66a",
 113         L"\x664\x662\xa0\x66a\x61c"},
 114     {1024, "1,024%", L"1.024\xa0%",
 115         L"\x6f1\x66c\x6f0\x6f2\x6f4\x66a",
 116         L"\x661\x66c\x660\x662\x664\xa0\x66a\x61c"},
 117   };
 118
 119   test::ScopedRestoreICUDefaultLocale restore_locale;
 120   for (size_t i = 0; i < arraysize(cases); ++i) {
 121     i18n::SetICUDefaultLocale("en");
 122     EXPECT_EQ(ASCIIToUTF16(cases[i].expected_english),
 123               FormatPercent(cases[i].number));
 124     i18n::SetICUDefaultLocale("de");
 125     EXPECT_EQ(WideToUTF16(cases[i].expected_german),
 126               FormatPercent(cases[i].number));
 127     i18n::SetICUDefaultLocale("fa");
 128     EXPECT_EQ(WideToUTF16(cases[i].expected_persian),
 129               FormatPercent(cases[i].number));
 130     i18n::SetICUDefaultLocale("ar");
 131     EXPECT_EQ(WideToUTF16(cases[i].expected_arabic),
 132               FormatPercent(cases[i].number));
 133   }
 134 }
 135
 136 }  // namespace
 137 }  // namespace base