tor-browser

The Tor Browser
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yield-spread-arr-single.js (2186B)

      1 // |reftest| async
      2 // This file was procedurally generated from the following sources:
      3 // - src/async-generators/yield-spread-arr-single.case
      4 // - src/async-generators/default/async-class-expr-static-private-method.template
      5 /*---
      6 description: Use yield value in a array spread position (Static async generator method as a ClassExpression element)
      7 esid: prod-AsyncGeneratorPrivateMethod
      8 features: [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    Array Initializer
     24 
     25    SpreadElement[Yield, Await]:
     26      ...AssignmentExpression[+In, ?Yield, ?Await]
     27 
     28 ---*/
     29 var arr = ['a', 'b', 'c'];
     30 
     31 
     32 var callCount = 0;
     33 
     34 var C = class {
     35    static async *#gen() {
     36        callCount += 1;
     37        yield [...yield];
     38    }
     39    static get gen() { return this.#gen; }
     40 }
     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 
     52 var iter = C.gen();
     53 
     54 iter.next(false);
     55 var item = iter.next(arr);
     56 
     57 item.then(({ done, value }) => {
     58  assert.notSameValue(value, arr, 'value is a new array');
     59  assert(Array.isArray(value), 'value is an Array exotic object');
     60  assert.sameValue(value.length, 3)
     61  assert.sameValue(value[0], 'a');
     62  assert.sameValue(value[1], 'b');
     63  assert.sameValue(value[2], 'c');
     64  assert.sameValue(done, false);
     65 }).then($DONE, $DONE);
     66 
     67 assert.sameValue(callCount, 1);
     68 
     69 // Test the private fields do not appear as properties after 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 );