Array/TypedArray/ArrayBuffer method subclassing and @@species

test/mjsunit/es6/typedarray-of.js

Index: test/mjsunit/es6/typedarray-of.js
diff --git a/test/mjsunit/es6/typedarray-of.js b/test/mjsunit/es6/typedarray-of.js
index 2ed550ca42e9f25b000a71245088d4fd3a1423fa..a6df29a0ddc858205a1afd78a9074b7ca2128502 100644
--- a/test/mjsunit/es6/typedarray-of.js
+++ b/test/mjsunit/es6/typedarray-of.js
@@ -4,6 +4,8 @@
 
 // Based on Mozilla Array.of() tests at http://dxr.mozilla.org/mozilla-central/source/js/src/jit-test/tests/collections
 
+'use strict';
+
 var typedArrayConstructors = [
   Uint8Array,
   Int8Array,
@@ -51,28 +53,29 @@ function TestTypedArrayOf(constructor) {
   assertEquals(aux.length, a.length);
   assertArrayEquals(aux, a);
 
-  // %TypedArray%.of can be transplanted to other constructors.
+  // %TypedArray%.of can be called on subclasses of TypedArrays
   var hits = 0;
-  function Bag(length) {
-    assertEquals(arguments.length, 1);
-    assertEquals(length, 2);
-    this.length = length;
-    hits++;
+  class Bag extends constructor {
+    constructor(length) {
+      super(length);
+      assertEquals(arguments.length, 1);
+      assertEquals(length, 2);
+      hits++;
+    }
   }
-  Bag.of = constructor.of;
 
   hits = 0;
-  a = Bag.of("zero", "one");
+  a = Bag.of(5, 6);
   assertEquals(1, hits);
   assertEquals(2, a.length);
-  assertArrayEquals(["zero", "one"], a);
+  assertArrayEquals([5, 6], a);
   assertEquals(Bag.prototype, a.__proto__);
 
   hits = 0;
-  actual = constructor.of.call(Bag, "zero", "one");
+  var actual = constructor.of.call(Bag, 5, 6);
   assertEquals(1, hits);
   assertEquals(2, a.length);
-  assertArrayEquals(["zero", "one"], a);
+  assertArrayEquals([5, 6], a);
   assertEquals(Bag.prototype, a.__proto__);
 
   // %TypedArray%.of does not trigger prototype setters.
@@ -90,22 +93,23 @@ function TestTypedArrayOf(constructor) {
   // invoked.
 
   // Setter on the newly created object.
-  function Pack() {
-    Object.defineProperty(this, "length", {
-      set: function (v) { status = "fail"; }
-    });
+  class Pack extends constructor {
+    constructor(length) {
+      super(length);
+      Object.defineProperty(this, "length", {
+        set: function (v) { status = "fail"; }
+      });
+    }
   }
-  Pack.of = constructor.of;
-  var pack = Pack.of("wolves", "cards", "cigarettes", "lies");
+  var pack = Pack.of(5, 6, 7, 8);
   assertEquals("pass", status);
 
   // when the setter is on the new object's prototype
-  function Bevy() {}
+  class Bevy extends constructor {}
   Object.defineProperty(Bevy.prototype, "length", {
     set: function (v) { status = "fail"; }
   });
-  Bevy.of = constructor.of;
-  var bevy = Bevy.of("quail");
+  var bevy = Bevy.of(3);
   assertEquals("pass", status);
 
   // Check superficial features of %TypedArray%.of.