tor-browser

The Tor Browser
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yield-star-getiter-sync-not-callable-symbol-throw.js (2870B)

      1 // |reftest| async
      2 // This file was procedurally generated from the following sources:
      3 // - src/async-generators/yield-star-getiter-sync-not-callable-symbol-throw.case
      4 // - src/async-generators/default/async-class-expr-static-private-method.template
      5 /*---
      6 description: Throws a TypeError on a non-callable [Symbol.iterator] (symbol) (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      b. If method is undefined,
     37        i. Let syncMethod be ? GetMethod(obj, @@iterator).
     38    ...
     39 
     40    GetMethod ( V, P )
     41 
     42    ...
     43    2. Let func be ? GetV(V, P).
     44    ...
     45    4. If IsCallable(func) is false, throw a TypeError exception.
     46    ...
     47 
     48 ---*/
     49 var obj = {
     50  [Symbol.iterator]: Symbol.iterator
     51 };
     52 
     53 
     54 
     55 var callCount = 0;
     56 
     57 var C = class {
     58    static async *#gen() {
     59        callCount += 1;
     60        yield* obj;
     61          throw new Test262Error('abrupt completion closes iter');
     62 
     63    }
     64    static get gen() { return this.#gen; }
     65 }
     66 
     67 // Test the private fields do not appear as properties before set to value
     68 assert(
     69  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     70  "#gen does not appear as an own property on C prototype"
     71 );
     72 assert(
     73  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     74  "#gen does not appear as an own property on C constructor"
     75 );
     76 
     77 var iter = C.gen();
     78 
     79 iter.next().then(() => {
     80  throw new Test262Error('Promise incorrectly fulfilled.');
     81 }, v => {
     82  assert.sameValue(v.constructor, TypeError, "TypeError");
     83 
     84  iter.next().then(({ done, value }) => {
     85    assert.sameValue(done, true, 'the iterator is completed');
     86    assert.sameValue(value, undefined, 'value is undefined');
     87  }).then($DONE, $DONE);
     88 }).catch($DONE);
     89 
     90 assert.sameValue(callCount, 1);
     91 
     92 // Test the private fields do not appear as properties after set to value
     93 assert(
     94  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     95  "#gen does not appear as an own property on C prototype"
     96 );
     97 assert(
     98  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     99  "#gen does not appear as an own property on C constructor"
    100 );