Invalidate defaultObjects if timezone changes

test/cctest/test-date.cc

Index: test/cctest/test-date.cc
diff --git a/test/cctest/test-date.cc b/test/cctest/test-date.cc
index 67b950159292d2e15c648008f2fb7d9fd4f151f4..38d2a770198e7b7c23cc00d68cca18a3de4ac40d 100644
--- a/test/cctest/test-date.cc
+++ b/test/cctest/test-date.cc
@@ -166,3 +166,30 @@ TEST(DaylightSavingsTime) {
   CheckDST(august_20 + 2 * 3600 - 1000);
   CheckDST(august_20);
 }
+
+TEST(DateCacheVersion) {

[jungshik at Google, 2016/05/19 22:10:31]

This test has to be enclosed by

#ifdef V8_I18N_SUPPORT
#endif 

because %DateCacheVersion is defined in runtime-i18n.cc which is not compiled
when V8_I18N_SUPPORT is not defined. 

[pgorszkowski, 2016/05/20 13:14:56]

Done.

+  FLAG_allow_natives_syntax = true;
+  v8::Isolate* isolate = CcTest::isolate();
+  v8::Isolate::Scope isolate_scope(isolate);
+  v8::HandleScope scope(isolate);
+  v8::Local<v8::Context> context = v8::Context::New(isolate);
+  v8::Context::Scope context_scope(context);
+  v8::Local<v8::Array> date_cache_version =
+      v8::Local<v8::Array>::Cast(CompileRun("%DateCacheVersion()"));

[jungshik at Google, 2016/05/19 22:10:31]

Asan test failed because DateCacheVersion is changed to return only a
version number instead of an array. 

This test has to be adjusted accordingly. 

[pgorszkowski, 2016/05/20 13:14:56]

Done.

+
+  CHECK_EQ(1, static_cast<int32_t>(date_cache_version->Length()));
+  CHECK(date_cache_version->Get(context, 0).ToLocalChecked()->IsNumber());
+  CHECK_EQ(0.0, date_cache_version->Get(context, 0)
+                    .ToLocalChecked()
+                    ->NumberValue(context)
+                    .FromJust());
+
+  v8::Date::DateTimeConfigurationChangeNotification(isolate);
+
+  CHECK_EQ(1, static_cast<int32_t>(date_cache_version->Length()));
+  CHECK(date_cache_version->Get(context, 0).ToLocalChecked()->IsNumber());
+  CHECK_EQ(1.0, date_cache_version->Get(context, 0)
+                    .ToLocalChecked()
+                    ->NumberValue(context)
+                    .FromJust());
+}