Add methods to extras' InternalPackedArray

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 123c8920d04d18d35a628ca6209b05133af2fd03..dfb6c8012cdbfad93b894acb7dbab6b63c714af4 100644
--- a/test/cctest/test-extra.js
+++ b/test/cctest/test-extra.js
@@ -28,6 +28,18 @@
   const Promise = global.Promise;
   const Promise_resolve = v8.simpleBind(Promise.resolve, Promise);
 
+  const arrayToTest = new v8.InternalPackedArray();
+  arrayToTest.push(1);
+  arrayToTest.push(2);
+  arrayToTest.pop();
+  arrayToTest.unshift("a", "b", "c");
+  arrayToTest.shift();
+  arrayToTest.splice(0, 1);
+  const slicedArray = arrayToTest.slice();
+  const arraysOK = arrayToTest.length === 2 && arrayToTest[0] === "c" &&
+      arrayToTest[1] === 1 && slicedArray.length === 2 &&
+      slicedArray[0] === "c" && slicedArray[1] === 1;
+
   binding.testExtraCanUseUtils = function() {
     const fulfilledPromise = v8.createPromise();
     v8.resolvePromise(
@@ -35,9 +47,9 @@
       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 fulfilledPromise2 = Promise_resolve(call(function (arg1, arg2) {
+      return (this.prop === arg1 && arg1 === 'value' && arg2) ? 2 : -1;
+    }, { prop: 'value' }, 'value', arraysOK));
 
     const rejectedPromise = v8.createPromise();
     v8.rejectPromise(rejectedPromise, apply(function (arg1, arg2) {