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 <limits>
   6
   7 #include "base/i18n/number_formatting.h"
   8 #include "base/i18n/rtl.h"
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace base {
  13 namespace {
  14
  15 TEST(NumberFormattingTest, FormatNumber) {
  16   static const struct {
  17     int64 number;
  18     const char* expected_english;
  19     const char* expected_german;
  20   } cases[] = {
  21     {0, "0", "0"},
  22     {1024, "1,024", "1.024"},
  23     {std::numeric_limits<int64>::max(),
  24         "9,223,372,036,854,775,807", "9.223.372.036.854.775.807"},
  25     {std::numeric_limits<int64>::min(),
  26         "-9,223,372,036,854,775,808", "-9.223.372.036.854.775.808"},
  27     {-42, "-42", "-42"},
  28   };
  29
  30   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
  31     i18n::SetICUDefaultLocale("en");
  32     testing::ResetFormatters();
  33     EXPECT_EQ(cases[i].expected_english,
  34               UTF16ToUTF8(FormatNumber(cases[i].number)));
  35     i18n::SetICUDefaultLocale("de");
  36     testing::ResetFormatters();
  37     EXPECT_EQ(cases[i].expected_german,
  38               UTF16ToUTF8(FormatNumber(cases[i].number)));
  39   }
  40 }
  41
  42 TEST(NumberFormattingTest, FormatDouble) {
  43   static const struct {
  44     double number;
  45     int frac_digits;
  46     const char* expected_english;
  47     const char* expected_german;
  48   } cases[] = {
  49     {0.0, 0, "0", "0"},
  50 #if !defined(OS_ANDROID)
  51     // Bionic can't printf negative zero correctly.
  52     {-0.0, 4, "-0.0000", "-0,0000"},
  53 #endif
  54     {1024.2, 0, "1,024", "1.024"},
  55     {-1024.223, 2, "-1,024.22", "-1.024,22"},
  56     {std::numeric_limits<double>::max(), 6,
  57         "179,769,313,486,232,000,000,000,000,000,000,000,000,000,000,000,000,"
  58         "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  59         "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  60         "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  61         "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  62         "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  63         "000.000000",
  64         "179.769.313.486.232.000.000.000.000.000.000.000.000.000.000.000.000."
  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         "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  70         "000,000000"},
  71     {std::numeric_limits<double>::min(), 2, "0.00", "0,00"},
  72     {-42.7, 3, "-42.700", "-42,700"},
  73   };
  74
  75   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
  76     i18n::SetICUDefaultLocale("en");
  77     testing::ResetFormatters();
  78     EXPECT_EQ(cases[i].expected_english,
  79               UTF16ToUTF8(FormatDouble(cases[i].number, cases[i].frac_digits)));
  80     i18n::SetICUDefaultLocale("de");
  81     testing::ResetFormatters();
  82     EXPECT_EQ(cases[i].expected_german,
  83               UTF16ToUTF8(FormatDouble(cases[i].number, cases[i].frac_digits)));
  84   }
  85 }
  86
  87 }  // namespace
  88 }  // namespace base