Add IsGeneratorFunction and IsGeneratorObject checks to v8::Value.

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 8fd87434c1b27aaeb5c31ce8af06026aa834cc62..18f795ec8a07fac4b4c18119fc8ae26b6ff1ab77 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -1542,6 +1542,34 @@ THREADED_TEST(IsNativeError) {
 }
 
 
+THREADED_TEST(IsGeneratorFunctionOrObject) {
+  LocalContext env;
+  v8::HandleScope scope(env->GetIsolate());
+
+  CompileRun("function *gen() { yield 1; }\nfunction func() {}");
+  v8::Handle<Value> gen = CompileRun("gen");
+  v8::Handle<Value> genObj = CompileRun("gen()");
+  v8::Handle<Value> object = CompileRun("{a:42}");
+  v8::Handle<Value> func = CompileRun("func");
+
+  CHECK(gen->IsGeneratorFunction());
+  CHECK(gen->IsFunction());
+  CHECK(!gen->IsGeneratorObject());
+
+  CHECK(!genObj->IsGeneratorFunction());
+  CHECK(!genObj->IsFunction());
+  CHECK(genObj->IsGeneratorObject());
+
+  CHECK(!object->IsGeneratorFunction());
+  CHECK(!object->IsFunction());
+  CHECK(!object->IsGeneratorObject());
+
+  CHECK(!func->IsGeneratorFunction());
+  CHECK(func->IsFunction());
+  CHECK(!func->IsGeneratorObject());
+}
+
+
 THREADED_TEST(ArgumentsObject) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());