Support for super assignments in for..in.

test/mjsunit/harmony/super.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Flags: --harmony-classes
 
 
 (function TestSuperNamedLoads() {
   function Base() { }
   function Derived() {
@@ skipping 642 matching lines @@
   Object.defineProperty(d, 'ownReadOnly', { value : 42, writable : false });
   Object.defineProperty(d, 'ownSetter',
       { set : function() { setterCalled++; } });
   Object.defineProperty(d, 'ownReadonlyAccessor',
       { get : function() { return 15; }});
   d.mSloppy();
   d.mStrict();
 }());
 
 
+(function TestSetterInForIn() {
+  var setCalled = 0;
+  var getCalled = 0;
+  function Base() {}
+  Base.prototype = {
+    constructor: Base,
+    get x() {
+      getCalled++;
+      return 1;
+    },
+    set x(v) {
+      setCalled++;
+      this.x_.push(v);
+    },
+  };
+
+  function Derived() {
+    this.x_ = [];
+  }
+  Derived.prototype = {
+    __proto__: Base.prototype,
+    constructor: Derived,
+  };
+
+  Derived.prototype.testIter = function() {
+    setCalled = 0;
+    getCalled = 0;
+    for (super.x in [1,2,3]) {}
+    assertEquals(0, getCalled);
+    assertEquals(3, setCalled);
+    assertEquals(["0","1","2"], this.x_);
+  }.toMethod(Derived.prototype);
+
+  new Derived().testIter();
+
+  var x = 'x';
+  Derived.prototype.testIterKeyed = function() {
+    setCalled = 0;
+    getCalled = 0;
+    for (super[x] in [1,2,3]) {}
+    assertEquals(0, getCalled);
+    assertEquals(3, setCalled);
+    assertEquals(["0","1","2"], this.x_);
+  }.toMethod(Derived.prototype);
+
+  new Derived().testIterKeyed();
+}());
+

[Igor Sheludko, 2014/10/13 11:39:07]

Does it make sense to test keyed access via object with toString() method like
you did for ordinary keyed stores to super?

[Dmitry Lomov (no reviews), 2014/10/13 12:39:51]

Done.

+
 (function TestKeyedSetterCreatingOwnProperties() {
   var ownReadOnly = 'ownReadOnly';
   var ownReadonlyAccessor = 'ownReadonlyAccessor';
   var ownSetter = 'ownSetter';
   function Base() {}
   function Derived() {}
   Derived.prototype = { __proto__ : Base.prototype };
   var setterCalled;
 
   Derived.prototype.mSloppy = function() {
@@ skipping 422 matching lines @@
 }());
 
 
 (function TestUnsupportedCases() {
   function f1(x) { return super[x]; }
   function f2(x) { super[x] = 5; }
   var o = {};
   assertThrows(function(){f1.toMethod(o)(15);}, ReferenceError);
   assertThrows(function(){f2.toMethod(o)(15);}, ReferenceError);
 }());