tor-browser

The Tor Browser
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yield-star-next-get-abrupt.js (2777B)

      1 // |reftest| async
      2 // This file was procedurally generated from the following sources:
      3 // - src/async-generators/yield-star-next-get-abrupt.case
      4 // - src/async-generators/default/async-class-expr-private-method.template
      5 /*---
      6 description: Abrupt completion while getting next (Async generator method as a ClassExpression element)
      7 esid: prod-AsyncGeneratorPrivateMethod
      8 features: [Symbol.iterator, Symbol.asyncIterator, async-iteration, class-methods-private]
      9 flags: [generated, async]
     10 info: |
     11    ClassElement :
     12      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    6. Repeat
     26      a. If received.[[Type]] is normal, then
     27        ii. Let innerResult be ? Invoke(iterator, "next",
     28            « received.[[Value]] »).
     29    ...
     30 
     31 ---*/
     32 var reason = {};
     33 var obj = {
     34  get [Symbol.iterator]() {
     35    throw new Test262Error('it should not get Symbol.iterator');
     36  },
     37  [Symbol.asyncIterator]() {
     38    return {
     39      get next() {
     40        throw reason;
     41      }
     42    };
     43  }
     44 };
     45 
     46 
     47 
     48 var callCount = 0;
     49 
     50 var C = class {
     51    async *#gen() {
     52        callCount += 1;
     53        yield* obj;
     54          throw new Test262Error('abrupt completion closes iter');
     55 
     56    }
     57    get gen() { return this.#gen; }
     58 }
     59 
     60 const c = new C();
     61 
     62 // Test the private fields do not appear as properties before set to value
     63 assert(
     64  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     65  "#gen does not appear as an own property on C prototype"
     66 );
     67 assert(
     68  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     69  "#gen does not appear as an own property on C constructor"
     70 );
     71 assert(
     72  !Object.prototype.hasOwnProperty.call(c, "#gen"),
     73  "#gen does not appear as an own property on C instance"
     74 );
     75 
     76 var iter = c.gen();
     77 
     78 iter.next().then(() => {
     79  throw new Test262Error('Promise incorrectly fulfilled.');
     80 }, v => {
     81  assert.sameValue(v, reason, "reject reason");
     82 
     83  iter.next().then(({ done, value }) => {
     84    assert.sameValue(done, true, 'the iterator is completed');
     85    assert.sameValue(value, undefined, 'value is undefined');
     86  }).then($DONE, $DONE);
     87 }).catch($DONE);
     88 
     89 assert.sameValue(callCount, 1);
     90 
     91 // Test the private fields do not appear as properties after set to value
     92 assert(
     93  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     94  "#gen does not appear as an own property on C prototype"
     95 );
     96 assert(
     97  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     98  "#gen does not appear as an own property on C constructor"
     99 );
    100 assert(
    101  !Object.prototype.hasOwnProperty.call(c, "#gen"),
    102  "#gen does not appear as an own property on C instance"
    103 );