tor-browser

The Tor Browser
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yield-star-getiter-async-get-abrupt.js (2803B)

      1 // |reftest| async
      2 // This file was procedurally generated from the following sources:
      3 // - src/async-generators/yield-star-getiter-async-get-abrupt.case
      4 // - src/async-generators/default/async-class-expr-static-private-method.template
      5 /*---
      6 description: Abrupt completion while getting [Symbol.asyncIterator] (Static async generator method as a ClassExpression 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    ...
     43 
     44 ---*/
     45 var reason = {};
     46 var obj = {
     47  get [Symbol.iterator]() {
     48    throw new Test262Error('it should not get Symbol.iterator');
     49  },
     50  get [Symbol.asyncIterator]() {
     51    throw reason;
     52  }
     53 };
     54 
     55 
     56 
     57 var callCount = 0;
     58 
     59 var C = class {
     60    static async *#gen() {
     61        callCount += 1;
     62        yield* obj;
     63          throw new Test262Error('abrupt completion closes iter');
     64 
     65    }
     66    static get gen() { return this.#gen; }
     67 }
     68 
     69 // Test the private fields do not appear as properties before set to value
     70 assert(
     71  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     72  "#gen does not appear as an own property on C prototype"
     73 );
     74 assert(
     75  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     76  "#gen does not appear as an own property on C constructor"
     77 );
     78 
     79 var iter = C.gen();
     80 
     81 iter.next().then(() => {
     82  throw new Test262Error('Promise incorrectly fulfilled.');
     83 }, v => {
     84  assert.sameValue(v, reason, "reject reason");
     85 
     86  iter.next().then(({ done, value }) => {
     87    assert.sameValue(done, true, 'the iterator is completed');
     88    assert.sameValue(value, undefined, 'value is undefined');
     89  }).then($DONE, $DONE);
     90 }).catch($DONE);
     91 
     92 assert.sameValue(callCount, 1);
     93 
     94 // Test the private fields do not appear as properties after set to value
     95 assert(
     96  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     97  "#gen does not appear as an own property on C prototype"
     98 );
     99 assert(
    100  !Object.prototype.hasOwnProperty.call(C, "#gen"),
    101  "#gen does not appear as an own property on C constructor"
    102 );