Unship ES6 iteration and unscopables on 3.28

test/mjsunit/es6/string-iterator.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.
-
-
-function TestStringPrototypeIterator() {
-  assertTrue(String.prototype.hasOwnProperty(Symbol.iterator));
-  assertFalse("".hasOwnProperty(Symbol.iterator));
-  assertFalse("".propertyIsEnumerable(Symbol.iterator));
-}
-TestStringPrototypeIterator();
-
-
-function assertIteratorResult(value, done, result) {
-  assertEquals({value: value, done: done}, result);
-}
-
-
-function TestManualIteration() {
-  var string = "abc";
-  var iterator = string[Symbol.iterator]();
-  assertIteratorResult('a', false, iterator.next());
-  assertIteratorResult('b', false, iterator.next());
-  assertIteratorResult('c', false, iterator.next());
-  assertIteratorResult(void 0, true, iterator.next());
-  assertIteratorResult(void 0, true, iterator.next());
-}
-TestManualIteration();
-
-
-function TestSurrogatePairs() {
-  var lo = "\uD834";
-  var hi = "\uDF06";
-  var pair = lo + hi;
-  var string = "abc" + pair + "def" + lo + pair + hi + lo;
-  var iterator = string[Symbol.iterator]();
-  assertIteratorResult('a', false, iterator.next());
-  assertIteratorResult('b', false, iterator.next());
-  assertIteratorResult('c', false, iterator.next());
-  assertIteratorResult(pair, false, iterator.next());
-  assertIteratorResult('d', false, iterator.next());
-  assertIteratorResult('e', false, iterator.next());
-  assertIteratorResult('f', false, iterator.next());
-  assertIteratorResult(lo, false, iterator.next());
-  assertIteratorResult(pair, false, iterator.next());
-  assertIteratorResult(hi, false, iterator.next());
-  assertIteratorResult(lo, false, iterator.next());
-  assertIteratorResult(void 0, true, iterator.next());
-  assertIteratorResult(void 0, true, iterator.next());
-}
-TestSurrogatePairs();
-
-
-function TestStringIteratorPrototype() {
-  var iterator = ""[Symbol.iterator]();
-  var StringIteratorPrototype = iterator.__proto__;
-  assertFalse(StringIteratorPrototype.hasOwnProperty('constructor'));
-  assertEquals(StringIteratorPrototype.__proto__, Object.prototype);
-  assertArrayEquals(['next'],
-      Object.getOwnPropertyNames(StringIteratorPrototype));
-  assertEquals('[object String Iterator]', "" + iterator);
-}
-TestStringIteratorPrototype();
-
-
-function TestForOf() {
-  var lo = "\uD834";
-  var hi = "\uDF06";
-  var pair = lo + hi;
-  var string = "abc" + pair + "def" + lo + pair + hi + lo;
-  var expected = ['a', 'b', 'c', pair, 'd', 'e', 'f', lo, pair, hi, lo];
-
-  var i = 0;
-  for (var char of string) {
-    assertEquals(expected[i++], char);
-  }
-
-  assertEquals(expected.length, i);
-}
-TestForOf();
-
-
-function TestNonOwnSlots() {
-  var iterator = ""[Symbol.iterator]();
-  var object = {__proto__: iterator};
-
-  assertThrows(function() { object.next(); }, TypeError);
-}
-TestNonOwnSlots();