tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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yield-promise-reject-next-yield-star-sync-iterator.js (2444B)

      1 // |reftest| async
      2 // This file was procedurally generated from the following sources:
      3 // - src/async-generators/yield-promise-reject-next-yield-star-sync-iterator.case
      4 // - src/async-generators/default/async-class-decl-private-method.template
      5 /*---
      6 description: yield * (async iterator) is treated as throw value (Async Generator method as a ClassDeclaration element)
      7 esid: prod-AsyncGeneratorPrivateMethod
      8 features: [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 let error = new Error();
     24 let iterable = [
     25  Promise.reject(error),
     26  "unreachable"
     27 ];
     28 
     29 
     30 var callCount = 0;
     31 
     32 class C {
     33    async *#gen() {
     34        callCount += 1;
     35        yield * iterable;
     36    }
     37    get gen() { return this.#gen; }
     38 }
     39 
     40 const c = new C();
     41 
     42 // Test the private fields do not appear as properties before set to value
     43 assert(
     44  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     45  "#gen does not appear as an own property on C prototype"
     46 );
     47 assert(
     48  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     49  "#gen does not appear as an own property on C constructor"
     50 );
     51 assert(
     52  !Object.prototype.hasOwnProperty.call(c, "#gen"),
     53  "#gen does not appear as an own property on C instance"
     54 );
     55 
     56 var iter = c.gen();
     57 
     58 iter.next().then(() => {
     59  throw new Test262Error("Promise incorrectly resolved.");
     60 }, rejectValue => {
     61  // yield Promise.reject(error);
     62  assert.sameValue(rejectValue, error);
     63 
     64  iter.next().then(({done, value}) => {
     65    // iter is closed now.
     66    assert.sameValue(done, true, "The value of IteratorResult.done is `true`");
     67    assert.sameValue(value, undefined, "The value of IteratorResult.value is `undefined`");
     68  }).then($DONE, $DONE);
     69 }).catch($DONE);
     70 
     71 assert.sameValue(callCount, 1);
     72 
     73 // Test the private fields do not appear as properties after set to value
     74 assert(
     75  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     76  "#gen does not appear as an own property on C prototype"
     77 );
     78 assert(
     79  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     80  "#gen does not appear as an own property on C constructor"
     81 );
     82 assert(
     83  !Object.prototype.hasOwnProperty.call(c, "#gen"),
     84  "#gen does not appear as an own property on C instance"
     85 );