ES6 computed property names

test/mjsunit/harmony/computed-property-names.js

Index: test/mjsunit/harmony/computed-property-names.js
diff --git a/test/mjsunit/harmony/computed-property-names.js b/test/mjsunit/harmony/computed-property-names.js
new file mode 100644
index 0000000000000000000000000000000000000000..a942eb3bf4a1982bc9bb699b13b8b2c7ca2c97d6
--- /dev/null
+++ b/test/mjsunit/harmony/computed-property-names.js
@@ -0,0 +1,116 @@
+// 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-computed-property-names --allow-natives-syntax
+
+
+(function TestBasicsString() {
+  var object = {
+    a: 'A',
+    ['b']: 'B',
+    c: 'C',
+    ['d']: 'D',
+  };
+  assertEquals('A', object.a);
+  assertEquals('B', object.b);
+  assertEquals('C', object.c);
+  assertEquals('D', object.d);
+  assertArrayEquals(['a', 'b', 'c', 'd'], Object.keys(object));
+})();
+
+
+(function TestBasicsNumber() {
+  var object = {
+    a: 'A',
+    [1]: 'B',
+    c: 'C',
+    [2]: 'D',
+  };
+  assertEquals('A', object.a);
+  assertEquals('B', object[1]);
+  assertEquals('C', object.c);
+  assertEquals('D', object[2]);
+  // Array indexes first.
+  assertArrayEquals(['1', '2', 'a', 'c'], Object.keys(object));
+})();
+
+
+(function TestBasicsSymbol() {
+  var sym = Symbol();
+  var sym2 = Symbol();
+  var object = {
+    a: 'A',
+    [sym]: 'B',
+    c: 'C',
+    [sym2]: 'D',
+  };
+  assertEquals('A', object.a);
+  assertEquals('B', object[sym]);
+  assertEquals('C', object.c);
+  assertEquals('D', object[sym2]);
+  assertArrayEquals(['a', 'c'], Object.keys(object));
+  assertArrayEquals([sym, sym2], Object.getOwnPropertySymbols(object));
+})();
+
+
+(function TestToNameSideEffects() {
+  var counter = 0;
+  var key1 = {
+    toString: function() {
+      assertEquals(0, counter++);
+      return 'b';
+    }
+  };
+  var key2 = {
+    toString: function() {
+      assertEquals(1, counter++);
+      return 'd';
+    }
+  };
+  var object = {
+    a: 'A',
+    [key1]: 'B',
+    c: 'C',
+    [key2]: 'D',
+  };
+  assertEquals(2, counter);
+  assertEquals('A', object.a);
+  assertEquals('B', object.b);
+  assertEquals('C', object.c);
+  assertEquals('D', object.d);
+  assertArrayEquals(['a', 'b', 'c', 'd'], Object.keys(object));
+})();
+
+
+(function TestToNameSideEffects2() {
+  var counter = 0;
+  var key1 = {
+    valueOf: function() {
+      assertEquals(0, counter++);
+      return 1;
+    },
+    toString: null
+  };
+  var key2 = {
+    valueOf: function() {
+      assertEquals(1, counter++);
+      return 2;
+    },
+    toString: null
+  };
+
+  var object = {
+    a: 'A',
+    [key1]: 'B',
+    c: 'C',
+    [key2]: 'D',
+  };
+  assertEquals(2, counter);
+  assertEquals('A', object.a);
+  assertEquals('B', object[1]);
+  assertEquals('C', object.c);
+  assertEquals('D', object[2]);
+  // Array indexes first.
+  assertArrayEquals(['1', '2', 'a', 'c'], Object.keys(object));
+})();