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 "base/test/icu_test_util.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12 #include "third_party/icu/source/i18n/unicode/usearch.h"
  13
  14 namespace base {
  15 namespace {
  16
  17 TEST(NumberFormattingTest, FormatNumber) {
  18   static const struct {
  19     int64 number;
  20     const char* expected_english;
  21     const char* expected_german;
  22   } cases[] = {
  23     {0, "0", "0"},
  24     {1024, "1,024", "1.024"},
  25     {std::numeric_limits<int64>::max(),
  26         "9,223,372,036,854,775,807", "9.223.372.036.854.775.807"},
  27     {std::numeric_limits<int64>::min(),
  28         "-9,223,372,036,854,775,808", "-9.223.372.036.854.775.808"},
  29     {-42, "-42", "-42"},
  30   };
  31
  32   test::ScopedRestoreICUDefaultLocale restore_locale;
  33
  34   for (size_t i = 0; i < arraysize(cases); ++i) {
  35     i18n::SetICUDefaultLocale("en");
  36     testing::ResetFormatters();
  37     EXPECT_EQ(cases[i].expected_english,
  38               UTF16ToUTF8(FormatNumber(cases[i].number)));
  39     i18n::SetICUDefaultLocale("de");
  40     testing::ResetFormatters();
  41     EXPECT_EQ(cases[i].expected_german,
  42               UTF16ToUTF8(FormatNumber(cases[i].number)));
  43   }
  44 }
  45
  46 TEST(NumberFormattingTest, FormatDouble) {
  47   static const struct {
  48     double number;
  49     int frac_digits;
  50     const char* expected_english;
  51     const char* expected_german;
  52   } cases[] = {
  53     {0.0, 0, "0", "0"},
  54 #if !defined(OS_ANDROID)
  55     // Bionic can't printf negative zero correctly.
  56     {-0.0, 4, "-0.0000", "-0,0000"},
  57 #endif
  58     {1024.2, 0, "1,024", "1.024"},
  59     {-1024.223, 2, "-1,024.22", "-1.024,22"},
  60     {std::numeric_limits<double>::max(), 6,
  61         "179,769,313,486,232,000,000,000,000,000,000,000,000,000,000,000,000,"
  62         "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  63         "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
  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         "000.000000",
  68         "179.769.313.486.232.000.000.000.000.000.000.000.000.000.000.000.000."
  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         "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  73         "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
  74         "000,000000"},
  75     {std::numeric_limits<double>::min(), 2, "0.00", "0,00"},
  76     {-42.7, 3, "-42.700", "-42,700"},
  77   };
  78
  79   test::ScopedRestoreICUDefaultLocale restore_locale;
  80   for (size_t i = 0; i < arraysize(cases); ++i) {
  81     i18n::SetICUDefaultLocale("en");
  82     testing::ResetFormatters();
  83     EXPECT_EQ(cases[i].expected_english,
  84               UTF16ToUTF8(FormatDouble(cases[i].number, cases[i].frac_digits)));
  85     i18n::SetICUDefaultLocale("de");
  86     testing::ResetFormatters();
  87     EXPECT_EQ(cases[i].expected_german,
  88               UTF16ToUTF8(FormatDouble(cases[i].number, cases[i].frac_digits)));
  89   }
  90 }
  91
  92 }  // namespace
  93 }  // namespace base