[api] expose Array Iterators to API

test/cctest/test-api.cc

 // 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
@@ skipping 21882 matching lines @@
   ExpectTrue("object[Symbol.isConcatSpreadable]");
 
   // If access check fails, the value of @@isConcatSpreadable is ignored
   allowed_access = false;
   CompileRun("var result = [].concat(object)");
   ExpectTrue("Array.isArray(result)");
   ExpectTrue("result[0] === object");
   ExpectTrue("result.length === 1");
   ExpectTrue("object[Symbol.isConcatSpreadable] === undefined");
 }
+
+
+TEST(ArrayIteratorMethods) {
+  v8::Isolate* isolate = CcTest::isolate();
+  v8::HandleScope scope(isolate);
+  LocalContext env;
+
+  env->Global()->Set(v8_str("keys"), v8::Array::GetKeysIterator(isolate));
+  env->Global()->Set(v8_str("values"), v8::Array::GetValuesIterator(isolate));
+  env->Global()->Set(v8_str("entries"), v8::Array::GetEntriesIterator(isolate));
+
+  ExpectString("typeof keys", "function");
+  ExpectString("typeof values", "function");
+  ExpectString("typeof entries", "function");
+}