Implement V8 extras utils object

test/cctest/test-extra.js

Index: test/cctest/test-extra.js
diff --git a/test/cctest/test-extra.js b/test/cctest/test-extra.js
index f943ea6c4e5adedb79b2c44213cdcf6a8ba56c60..123c8920d04d18d35a628ca6209b05133af2fd03 100644
--- a/test/cctest/test-extra.js
+++ b/test/cctest/test-extra.js
@@ -2,13 +2,53 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-(function (global, binding) {
+(function (global, binding, v8) {
   'use strict';
-  binding.testExtraShouldReturnFive = function () {
+  binding.testExtraShouldReturnFive = function() {
     return 5;
   };
 
   binding.testExtraShouldCallToRuntime = function() {
     return binding.runtime(3);
   };
+
+  // Exercise all of the extras utils:
+  // - v8.createPrivateSymbol
+  // - v8.simpleBind, v8.uncurryThis
+  // - v8.InternalPackedArray
+  // - v8.createPromise, v8.resolvePromise, v8.rejectPromise
+
+  const Object = global.Object;
+  const hasOwn = v8.uncurryThis(Object.prototype.hasOwnProperty);
+
+  const Function = global.Function;
+  const call = v8.uncurryThis(Function.prototype.call);
+  const apply = v8.uncurryThis(Function.prototype.apply);
+
+  const Promise = global.Promise;
+  const Promise_resolve = v8.simpleBind(Promise.resolve, Promise);
+
+  binding.testExtraCanUseUtils = function() {
+    const fulfilledPromise = v8.createPromise();
+    v8.resolvePromise(
+      fulfilledPromise,
+      hasOwn({ test: 'test' }, 'test') ? 1 : -1
+    );
+
+    const fulfilledPromise2 = Promise_resolve(call(function (arg1) {
+      return (this.prop === arg1 && arg1 === 'value') ? 2 : -1;
+    }, { prop: 'value' }, 'value'));
+
+    const rejectedPromise = v8.createPromise();
+    v8.rejectPromise(rejectedPromise, apply(function (arg1, arg2) {
+      return (arg1 === arg2 && arg2 === 'x') ? 3 : -1;
+    }, null, new v8.InternalPackedArray('x', 'x')));
+
+    return {
+      privateSymbol: v8.createPrivateSymbol('sym'),
+      fulfilledPromise, // should be fulfilled with 1
+      fulfilledPromise2, // should be fulfilled with 2
+      rejectedPromise // should be rejected with 3
+    };
+  };
 })