test-date.cc 7.22 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

28
#include "src/date.h"
29
#include "src/global-handles.h"
30 31
#include "src/isolate.h"
#include "src/v8.h"
32
#include "test/cctest/cctest.h"
33

34 35
namespace v8 {
namespace internal {
36 37 38 39 40 41 42 43 44 45 46

class DateCacheMock: public DateCache {
 public:
  struct Rule {
    int year, start_month, start_day, end_month, end_day, offset_sec;
  };

  DateCacheMock(int local_offset, Rule* rules, int rules_count)
      : local_offset_(local_offset), rules_(rules), rules_count_(rules_count) {}

 protected:
47
  int GetDaylightSavingsOffsetFromOS(int64_t time_sec) override {
48 49 50 51 52
    int days = DaysFromTime(time_sec * 1000);
    int time_in_day_sec = TimeInDay(time_sec * 1000, days) / 1000;
    int year, month, day;
    YearMonthDayFromDays(days, &year, &month, &day);
    Rule* rule = FindRuleFor(year, month, day, time_in_day_sec);
53
    return rule == nullptr ? 0 : rule->offset_sec * 1000;
54 55
  }

56
  int GetLocalOffsetFromOS(int64_t time_sec, bool is_utc) override {
57
    return local_offset_ + GetDaylightSavingsOffsetFromOS(time_sec);
58 59 60 61
  }

 private:
  Rule* FindRuleFor(int year, int month, int day, int time_in_day_sec) {
62
    Rule* result = nullptr;
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109
    for (int i = 0; i < rules_count_; i++)
      if (Match(&rules_[i], year, month, day, time_in_day_sec)) {
        result = &rules_[i];
      }
    return result;
  }


  bool Match(Rule* rule, int year, int month, int day, int time_in_day_sec) {
    if (rule->year != 0 && rule->year != year) return false;
    if (rule->start_month > month) return false;
    if (rule->end_month < month) return false;
    int start_day = ComputeRuleDay(year, rule->start_month, rule->start_day);
    if (rule->start_month == month && start_day > day) return false;
    if (rule->start_month == month && start_day == day &&
        2 * 3600 > time_in_day_sec)
      return false;
    int end_day = ComputeRuleDay(year, rule->end_month, rule->end_day);
    if (rule->end_month == month && end_day < day) return false;
    if (rule->end_month == month && end_day == day &&
        2 * 3600 <= time_in_day_sec)
      return false;
    return true;
  }


  int ComputeRuleDay(int year, int month, int day) {
    if (day != 0) return day;
    int days = DaysFromYearMonth(year, month);
    // Find the first Sunday of the month.
    while (Weekday(days + day) != 6) day++;
    return day + 1;
  }

  int local_offset_;
  Rule* rules_;
  int rules_count_;
};

static int64_t TimeFromYearMonthDay(DateCache* date_cache,
                                    int year,
                                    int month,
                                    int day) {
  int64_t result = date_cache->DaysFromYearMonth(year, month);
  return (result + day - 1) * DateCache::kMsPerDay;
}

110

111
static void CheckDST(int64_t time) {
112
  Isolate* isolate = CcTest::i_isolate();
113 114
  DateCache* date_cache = isolate->date_cache();
  int64_t actual = date_cache->ToLocal(time);
115
  int64_t expected = time + date_cache->GetLocalOffsetFromOS(time, true);
116 117 118 119 120 121
  CHECK_EQ(actual, expected);
}


TEST(DaylightSavingsTime) {
  LocalContext context;
122 123
  v8::Isolate* isolate = context->GetIsolate();
  v8::HandleScope scope(isolate);
124 125 126 127 128 129 130 131 132 133
  DateCacheMock::Rule rules[] = {
    {0, 2, 0, 10, 0, 3600},  // DST from March to November in any year.
    {2010, 2, 0, 7, 20, 3600},  // DST from March to August 20 in 2010.
    {2010, 7, 20, 8, 10, 0},  // No DST from August 20 to September 10 in 2010.
    {2010, 8, 10, 10, 0, 3600},  // DST from September 10 to November in 2010.
  };

  int local_offset_ms = -36000000;  // -10 hours.

  DateCacheMock* date_cache =
134
    new DateCacheMock(local_offset_ms, rules, arraysize(rules));
135

136
  reinterpret_cast<Isolate*>(isolate)->set_date_cache(date_cache);
137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168

  int64_t start_of_2010 = TimeFromYearMonthDay(date_cache, 2010, 0, 1);
  int64_t start_of_2011 = TimeFromYearMonthDay(date_cache, 2011, 0, 1);
  int64_t august_20 = TimeFromYearMonthDay(date_cache, 2010, 7, 20);
  int64_t september_10 = TimeFromYearMonthDay(date_cache, 2010, 8, 10);
  CheckDST((august_20 + september_10) / 2);
  CheckDST(september_10);
  CheckDST(september_10 + 2 * 3600);
  CheckDST(september_10 + 2 * 3600 - 1000);
  CheckDST(august_20 + 2 * 3600);
  CheckDST(august_20 + 2 * 3600 - 1000);
  CheckDST(august_20);
  // Check each day of 2010.
  for (int64_t time = start_of_2011 + 2 * 3600;
       time >= start_of_2010;
       time -= DateCache::kMsPerDay) {
    CheckDST(time);
    CheckDST(time - 1000);
    CheckDST(time + 1000);
  }
  // Check one day from 2010 to 2100.
  for (int year = 2100; year >= 2010; year--) {
    CheckDST(TimeFromYearMonthDay(date_cache, year, 5, 5));
  }
  CheckDST((august_20 + september_10) / 2);
  CheckDST(september_10);
  CheckDST(september_10 + 2 * 3600);
  CheckDST(september_10 + 2 * 3600 - 1000);
  CheckDST(august_20 + 2 * 3600);
  CheckDST(august_20 + 2 * 3600 - 1000);
  CheckDST(august_20);
}
169

170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
namespace {
int legacy_parse_count = 0;
void DateParseLegacyCounterCallback(v8::Isolate* isolate,
                                    v8::Isolate::UseCounterFeature feature) {
  if (feature == v8::Isolate::kLegacyDateParser) legacy_parse_count++;
}
}  // anonymous namespace

TEST(DateParseLegacyUseCounter) {
  CcTest::InitializeVM();
  v8::HandleScope scope(CcTest::isolate());
  LocalContext context;
  CcTest::isolate()->SetUseCounterCallback(DateParseLegacyCounterCallback);
  CHECK_EQ(0, legacy_parse_count);
  CompileRun("Date.parse('2015-02-31')");
  CHECK_EQ(0, legacy_parse_count);
  CompileRun("Date.parse('2015-02-31T11:22:33.444Z01:23')");
  CHECK_EQ(0, legacy_parse_count);
  CompileRun("Date.parse('2015-02-31T11:22:33.444')");
  CHECK_EQ(0, legacy_parse_count);
  CompileRun("Date.parse('2000 01 01')");
  CHECK_EQ(1, legacy_parse_count);
  CompileRun("Date.parse('2015-02-31T11:22:33.444     ')");
  CHECK_EQ(1, legacy_parse_count);
}

196 197
}  // namespace internal
}  // namespace v8