diff --git a/test/cctest/test-date.cc b/test/cctest/test-date.cc
index 67b9501..a745949 100644
--- a/test/cctest/test-date.cc
+++ b/test/cctest/test-date.cc
@@ -166,3 +166,52 @@
   CheckDST(august_20 + 2 * 3600 - 1000);
   CheckDST(august_20);
 }
+
+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);
+}
+
+#ifdef V8_I18N_SUPPORT
+TEST(DateCacheVersion) {
+  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::Number> date_cache_version =
+      v8::Local<v8::Number>::Cast(CompileRun("%DateCacheVersion()"));
+
+  CHECK(date_cache_version->IsNumber());
+  CHECK_EQ(0.0, date_cache_version->NumberValue(context).FromMaybe(-1.0));
+
+  v8::Date::DateTimeConfigurationChangeNotification(isolate);
+
+  date_cache_version =
+      v8::Local<v8::Number>::Cast(CompileRun("%DateCacheVersion()"));
+  CHECK(date_cache_version->IsNumber());
+  CHECK_EQ(1.0, date_cache_version->NumberValue(context).FromMaybe(-1.0));
+}
+#endif  // V8_I18N_SUPPORT