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#include "src/v8.h"
#include "src/global-handles.h"
#include "src/snapshot.h"
#include "test/cctest/cctest.h"
using namespace v8::internal;
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:
virtual int GetDaylightSavingsOffsetFromOS(int64_t time_sec) {
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);
return rule == NULL ? 0 : rule->offset_sec * 1000;
}
virtual int GetLocalOffsetFromOS() {
return local_offset_;
}
private:
Rule* FindRuleFor(int year, int month, int day, int time_in_day_sec) {
Rule* result = NULL;
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;
}
static void CheckDST(int64_t time) {
Isolate* isolate = CcTest::i_isolate();
DateCache* date_cache = isolate->date_cache();
int64_t actual = date_cache->ToLocal(time);
int64_t expected = time + date_cache->GetLocalOffsetFromOS() +
date_cache->GetDaylightSavingsOffsetFromOS(time / 1000);
CHECK_EQ(actual, expected);
}
TEST(DaylightSavingsTime) {
LocalContext context;
v8::Isolate* isolate = context->GetIsolate();
v8::HandleScope scope(isolate);
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 =
new DateCacheMock(local_offset_ms, rules, ARRAY_SIZE(rules));
reinterpret_cast<Isolate*>(isolate)->set_date_cache(date_cache);
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);
}
TEST(DateCacheVersion) {
FLAG_allow_natives_syntax = true;
v8::Isolate* isolate = CcTest::isolate();
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope scope(isolate);
v8::Handle<v8::Context> context = v8::Context::New(isolate);
v8::Context::Scope context_scope(context);
v8::Handle<v8::Array> date_cache_version =
v8::Handle<v8::Array>::Cast(CompileRun("%DateCacheVersion()"));
CHECK_EQ(1, static_cast<int32_t>(date_cache_version->Length()));
CHECK(date_cache_version->Get(0)->IsNumber());
CHECK_EQ(0.0, date_cache_version->Get(0)->NumberValue());
v8::Date::DateTimeConfigurationChangeNotification(isolate);
CHECK_EQ(1, static_cast<int32_t>(date_cache_version->Length()));
CHECK(date_cache_version->Get(0)->IsNumber());
CHECK_EQ(1.0, date_cache_version->Get(0)->NumberValue());
}