// Copyright (C) 2014 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 21.1.5.2.1
description: >
    Iteration should visit each UTF-8 code point exactly once.
features: [Symbol.iterator]
---*/

var string = "abc";
var iterator = string[Symbol.iterator]();
var result;

result = iterator.next();
assert.sameValue(result.value, 'a', 'First result `value`');
assert.sameValue(result.done, false, 'First result `done` flag');

result = iterator.next();
assert.sameValue(result.value, 'b', 'Second result `value`');
assert.sameValue(result.done, false, 'Second result `done` flag');

result = iterator.next();
assert.sameValue(result.value, 'c', 'Third result `value`');
assert.sameValue(result.done, false, 'Third result `done` flag');

result = iterator.next();
assert.sameValue(result.value, undefined, 'Exhausted result `value`');
assert.sameValue(result.done, true, 'Exhausted result `done` flag');

result = iterator.next();
assert.sameValue(
  result.value, undefined, 'Exhausted result `value` (repeated request)'
);
assert.sameValue(
  result.done, true, 'Exhausted result `done` flag (repeated request)'
);