tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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yield-identifier-spread-strict-strict.js (2300B)

      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-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. (Generator private method as a ClassExpression element)
      8 esid: prod-GeneratorPrivateMethod
      9 features: [object-spread, generators, 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      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    *#gen() {
     40        callCount += 1;
     41        return {
     42             ...(function() {
     43                var yield;
     44                throw new Test262Error();
     45             }()),
     46          }
     47    }
     48    get gen() { return this.#gen; }
     49 }
     50 
     51 const c = new C();
     52 
     53 // Test the private fields do not appear as properties before set to value
     54 assert(
     55  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
     56  "Private field '#gen' does not appear as an own property on C prototype"
     57 );
     58 assert(
     59  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     60  "Private field '#gen' does not appear as an own property on C constructor"
     61 );
     62 assert(
     63  !Object.prototype.hasOwnProperty.call(c, "#gen"),
     64  "Private field '#gen' does not appear as an own property on C instance"
     65 );
     66 
     67 var iter = c.gen();
     68 
     69 
     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  "Private field '#gen' does not appear as an own property on C prototype"
     77 );
     78 assert(
     79  !Object.prototype.hasOwnProperty.call(C, "#gen"),
     80  "Private field '#gen' does not appear as an own property on C constructor"
     81 );
     82 assert(
     83  !Object.prototype.hasOwnProperty.call(c, "#gen"),
     84  "Private field '#gen' does not appear as an own property on C instance"
     85 );