[V8] Add v8::Value::TypeOf to API

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index b0369938846bd02ecdbeb631b527af1e489e30bb..d81624b31540683dc2380fa11c7964b8934a198b 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -6511,6 +6511,47 @@ THREADED_TEST(Equality) {
   CHECK(!v8::False(isolate)->SameValue(v8::Undefined(isolate)));
 }
 
+THREADED_TEST(TypeOf) {
+  LocalContext context;
+  v8::Isolate* isolate = context->GetIsolate();
+  v8::HandleScope scope(context->GetIsolate());
+
+  Local<v8::FunctionTemplate> t1 = v8::FunctionTemplate::New(isolate);
+  Local<v8::Function> fun = t1->GetFunction(context.local()).ToLocalChecked();
+
+  CHECK(v8::Value::TypeOf(context.local(), v8::Undefined(isolate))
+            .ToLocalChecked()
+            ->Equals(context.local(), v8_str("undefined"))
+            .FromJust());
+  CHECK(v8::Value::TypeOf(context.local(), v8::Null(isolate))
+            .ToLocalChecked()
+            ->Equals(context.local(), v8_str("object"))
+            .FromJust());
+  CHECK(v8::Value::TypeOf(context.local(), v8_str("str"))
+            .ToLocalChecked()
+            ->Equals(context.local(), v8_str("string"))
+            .FromJust());
+  CHECK(v8::Value::TypeOf(context.local(), v8_num(0.0))
+            .ToLocalChecked()
+            ->Equals(context.local(), v8_str("number"))
+            .FromJust());
+  CHECK(v8::Value::TypeOf(context.local(), v8_num(1))
+            .ToLocalChecked()
+            ->Equals(context.local(), v8_str("number"))
+            .FromJust());
+  CHECK(v8::Value::TypeOf(context.local(), v8::Object::New(isolate))
+            .ToLocalChecked()
+            ->Equals(context.local(), v8_str("object"))
+            .FromJust());
+  CHECK(v8::Value::TypeOf(context.local(), v8::Boolean::New(isolate, true))
+            .ToLocalChecked()
+            ->Equals(context.local(), v8_str("boolean"))
+            .FromJust());
+  CHECK(v8::Value::TypeOf(context.local(), fun)
+            .ToLocalChecked()
+            ->Equals(context.local(), v8_str("function"))
+            .FromJust());
+}
 
 THREADED_TEST(MultiRun) {
   LocalContext context;