Merge V8 at 3.9.24.13
Bug: 5688872
Change-Id: Id0aa8d23375030494d3189c31774059c0f5398fc
diff --git a/test/cctest/test-date.cc b/test/cctest/test-date.cc
new file mode 100644
index 0000000..903a63a
--- /dev/null
+++ b/test/cctest/test-date.cc
@@ -0,0 +1,168 @@
+// 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.
+
+#include "v8.h"
+
+#include "global-handles.h"
+#include "snapshot.h"
+#include "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 = Isolate::Current();
+ 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::HandleScope scope;
+ Isolate* isolate = Isolate::Current();
+ 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));
+
+ 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);
+}