tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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yield-identifier-spread-strict-strict.js (2049B)

      1 // |reftest| error:SyntaxError
      2 'use strict';
      3 // This file was procedurally generated from the following sources:
      4 // - src/generators/yield-identifier-spread-strict.case
      5 // - src/generators/default/class-expr-static-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. (Static generator private method as a ClassExpression element)
      8 esid: prod-GeneratorPrivateMethod
      9 features: [object-spread, generators, class-static-methods-private]
     10 flags: [generated, onlyStrict]
     11 negative:
     12  phase: parse
     13  type: SyntaxError
     14 info: |
     15    ClassElement :
     16      static PrivateMethodDefinition
     17 
     18    MethodDefinition :
     19      GeneratorMethod
     20 
     21    14.4 Generator Function Definitions
     22 
     23    GeneratorMethod :
     24      * PropertyName ( UniqueFormalParameters ) { GeneratorBody }
     25 
     26 
     27    Spread Properties
     28 
     29    PropertyDefinition[Yield]:
     30      (...)
     31      ...AssignmentExpression[In, ?Yield]
     32 
     33 ---*/
     34 $DONOTEVALUATE();
     35 
     36 var callCount = 0;
     37 
     38 var C = class {
     39    static *#gen() {
     40        callCount += 1;
     41        return {
     42             ...(function() {
     43                var yield;
     44                throw new Test262Error();
     45             }()),
     46          }
     47    }
     48    static get gen() { return this.#gen; }
     49 }
     50 
     51 // Test the private fields do not appear as properties before set to value
     52 assert(
     53  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     54  "Private field '#gen' does not appear as an own property on C prototype"
     55 );
     56 assert(
     57  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     58  "Private field '#gen' does not appear as an own property on C constructor"
     59 );
     60 
     61 var iter = C.gen();
     62 
     63 
     64 
     65 assert.sameValue(callCount, 1);
     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  "Private field '#gen' does not appear as an own property on C prototype"
     71 );
     72 assert(
     73  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     74  "Private field '#gen' does not appear as an own property on C constructor"
     75 );