tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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yield-identifier-spread-strict-strict.js (2284B)

      1 // |reftest| error:SyntaxError
      2 'use strict';
      3 // This file was procedurally generated from the following sources:
      4 // - src/async-generators/yield-identifier-spread-strict.case
      5 // - src/async-generators/default/async-class-expr-private-method.template
      6 /*---
      7 description: It's an early error if the AssignmentExpression is a function body with yield as an identifier in strict mode. (Async generator method as a ClassExpression element)
      8 esid: prod-AsyncGeneratorPrivateMethod
      9 features: [object-spread, async-iteration, class-methods-private]
     10 flags: [generated, onlyStrict]
     11 negative:
     12  phase: parse
     13  type: SyntaxError
     14 info: |
     15    ClassElement :
     16      PrivateMethodDefinition
     17 
     18    MethodDefinition :
     19      AsyncGeneratorMethod
     20 
     21    Async Generator Function Definitions
     22 
     23    AsyncGeneratorMethod :
     24      async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
     25 
     26 
     27    Spread Properties
     28 
     29    PropertyDefinition[Yield]:
     30      (...)
     31      ...AssignmentExpression[In, ?Yield]
     32 
     33 ---*/
     34 $DONOTEVALUATE();
     35 
     36 
     37 var callCount = 0;
     38 
     39 var C = class {
     40    async *#gen() {
     41        callCount += 1;
     42        return {
     43             ...(function() {
     44                var yield;
     45                throw new Test262Error();
     46             }()),
     47          }
     48    }
     49    get gen() { return this.#gen; }
     50 }
     51 
     52 const c = new C();
     53 
     54 // Test the private fields do not appear as properties before set to value
     55 assert(
     56  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     57  "#gen does not appear as an own property on C prototype"
     58 );
     59 assert(
     60  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     61  "#gen does not appear as an own property on C constructor"
     62 );
     63 assert(
     64  !Object.prototype.hasOwnProperty.call(c, "#gen"),
     65  "#gen does not appear as an own property on C instance"
     66 );
     67 
     68 var iter = c.gen();
     69 
     70 
     71 
     72 assert.sameValue(callCount, 1);
     73 
     74 // Test the private fields do not appear as properties after set to value
     75 assert(
     76  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     77  "#gen does not appear as an own property on C prototype"
     78 );
     79 assert(
     80  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     81  "#gen does not appear as an own property on C constructor"
     82 );
     83 assert(
     84  !Object.prototype.hasOwnProperty.call(c, "#gen"),
     85  "#gen does not appear as an own property on C instance"
     86 );