tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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iterator-items-are-not-object-close-iterator.js (1611B)

      1 // Copyright (C) 2015 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 esid: sec-weakmap-iterable
      5 description: >
      6  Closes the iterator object after not object error on next item.
      7 info: |
      8  WeakMap ( [ iterable ] )
      9 
     10  ...
     11  9. Repeat
     12    ...
     13    d. Let nextItem be IteratorValue(next).
     14    e. ReturnIfAbrupt(nextItem).
     15    f. If Type(nextItem) is not Object,
     16      i. Let error be Completion{[[type]]: throw, [[value]]: a newly created
     17      TypeError object, [[target]]:empty}.
     18      ii. Return IteratorClose(iter, error).
     19 features:
     20  - Symbol
     21  - Symbol.iterator
     22 ---*/
     23 
     24 var count = 0;
     25 var nextItem;
     26 var iterable = {};
     27 iterable[Symbol.iterator] = function() {
     28  return {
     29    next: function() {
     30      return {
     31        value: nextItem,
     32        done: false
     33      };
     34    },
     35    return: function() {
     36      count += 1;
     37    }
     38  };
     39 };
     40 
     41 nextItem = 1;
     42 assert.throws(TypeError, function() {
     43  new WeakMap(iterable);
     44 });
     45 assert.sameValue(count, 1);
     46 
     47 nextItem = true;
     48 assert.throws(TypeError, function() {
     49  new WeakMap(iterable);
     50 });
     51 assert.sameValue(count, 2);
     52 
     53 nextItem = '';
     54 assert.throws(TypeError, function() {
     55  new WeakMap(iterable);
     56 });
     57 assert.sameValue(count, 3);
     58 
     59 nextItem = null;
     60 assert.throws(TypeError, function() {
     61  new WeakMap(iterable);
     62 });
     63 assert.sameValue(count, 4);
     64 
     65 nextItem = undefined;
     66 assert.throws(TypeError, function() {
     67  new WeakMap(iterable);
     68 });
     69 assert.sameValue(count, 5);
     70 
     71 nextItem = Symbol.for('a');
     72 assert.throws(TypeError, function() {
     73  new WeakMap(iterable);
     74 });
     75 assert.sameValue(count, 6);
     76 
     77 reportCompare(0, 0);