tor-browser

The Tor Browser
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yield-star-getiter-async-not-callable-number-throw.js (2922B)

      1 // |reftest| async
      2 // This file was procedurally generated from the following sources:
      3 // - src/async-generators/yield-star-getiter-async-not-callable-number-throw.case
      4 // - src/async-generators/default/async-class-decl-static-private-method.template
      5 /*---
      6 description: Throws a TypeError on a non-callable [Symbol.asyncIterator] (number) (Static async generator method as a ClassDeclaration element)
      7 esid: prod-AsyncGeneratorPrivateMethod
      8 features: [Symbol.iterator, Symbol.asyncIterator, async-iteration, class-static-methods-private]
      9 flags: [generated, async]
     10 info: |
     11    ClassElement :
     12      static PrivateMethodDefinition
     13 
     14    MethodDefinition :
     15      AsyncGeneratorMethod
     16 
     17    Async Generator Function Definitions
     18 
     19    AsyncGeneratorMethod :
     20      async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
     21 
     22 
     23    YieldExpression: yield * AssignmentExpression
     24 
     25    1. Let exprRef be the result of evaluating AssignmentExpression.
     26    2. Let value be ? GetValue(exprRef).
     27    3. Let generatorKind be ! GetGeneratorKind().
     28    4. Let iterator be ? GetIterator(value, generatorKind).
     29    ...
     30 
     31    GetIterator ( obj [ , hint ] )
     32 
     33    ...
     34    3. If hint is async,
     35      a. Set method to ? GetMethod(obj, @@asyncIterator).
     36    ...
     37 
     38    GetMethod ( V, P )
     39 
     40    ...
     41    2. Let func be ? GetV(V, P).
     42    3. If func is either undefined or null, return undefined.
     43    4. If IsCallable(func) is false, throw a TypeError exception.
     44    ...
     45 
     46 ---*/
     47 var obj = {
     48  get [Symbol.iterator]() {
     49    throw new Test262Error('it should not get Symbol.iterator');
     50  },
     51  [Symbol.asyncIterator]: 0
     52 };
     53 
     54 
     55 
     56 var callCount = 0;
     57 
     58 class C {
     59    static async *#gen() {
     60        callCount += 1;
     61        yield* obj;
     62          throw new Test262Error('abrupt completion closes iter');
     63 
     64    }
     65    static get gen() { return this.#gen; }
     66 }
     67 
     68 // Test the private fields do not appear as properties before set to value
     69 assert(
     70  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     71  "#gen does not appear as an own property on C prototype"
     72 );
     73 assert(
     74  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     75  "#gen does not appear as an own property on C constructor"
     76 );
     77 
     78 var iter = C.gen();
     79 
     80 iter.next().then(() => {
     81  throw new Test262Error('Promise incorrectly fulfilled.');
     82 }, v => {
     83  assert.sameValue(v.constructor, TypeError, "TypeError");
     84 
     85  iter.next().then(({ done, value }) => {
     86    assert.sameValue(done, true, 'the iterator is completed');
     87    assert.sameValue(value, undefined, 'value is undefined');
     88  }).then($DONE, $DONE);
     89 }).catch($DONE);
     90 
     91 assert.sameValue(callCount, 1);
     92 
     93 // Test the private fields do not appear as properties after set to value
     94 assert(
     95  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     96  "#gen does not appear as an own property on C prototype"
     97 );
     98 assert(
     99  !Object.prototype.hasOwnProperty.call(C, "#gen"),
    100  "#gen does not appear as an own property on C constructor"
    101 );