tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

fn-length-static-precedence-order.js (2384B)

      1 // Copyright (C) 2015 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-runtime-semantics-classdefinitionevaluation
      6 description: >
      7    Function `length` attribute not inferred in presence of static `length` method
      8 info: |
      9    ClassTail : ClassHeritage_opt { ClassBody_opt }
     10 
     11    14. If constructor is empty, then [...]
     12      b. Let F be ! CreateBuiltinFunction(steps, 0, className, « [[ConstructorKind]], [[SourceText]] », empty, constructorParent).
     13    15. Else,
     14      a. Let constructorInfo be ! DefineMethod of constructor with arguments proto and constructorParent.
     15         [ This sets the length property on constructorInfo.[[Closure]]. ]
     16      b. Let F be constructorInfo.[[Closure]].
     17      [...]
     18    25. For each ClassElement e of elements, do
     19      a. If IsStatic of e is false, then [...]
     20      b. Else,
     21        i. Let field be ClassElementEvaluation of e with arguments F and false.
     22           [ This overwrites the length property on F. ]
     23 includes: [compareArray.js]
     24 features: [generators]
     25 ---*/
     26 
     27 class A {
     28  static method() {
     29    throw new Test262Error('Static method should not be executed during definition');
     30  }
     31  static length() {
     32    throw new Test262Error('Static method should not be executed during definition');
     33  }
     34 }
     35 
     36 assert.compareArray(Object.getOwnPropertyNames(A), ['length', 'name', 'prototype', 'method'])
     37 
     38 var attr = 'length';
     39 class B {
     40  static [attr]() {
     41    throw new Test262Error(
     42      'Static method defined via computed property should not be executed ' +
     43      'during definition'
     44    );
     45  }
     46 }
     47 
     48 assert.compareArray(Object.getOwnPropertyNames(B), ['length', 'name', 'prototype'])
     49 
     50 class C {
     51  static get length() {
     52    throw new Test262Error('Static `get` accessor should not be executed during definition');
     53  }
     54 }
     55 
     56 assert.compareArray(Object.getOwnPropertyNames(C), ['length', 'name', 'prototype'])
     57 
     58 class D {
     59  static set length(_) {
     60    throw new Test262Error('Static `set` accessor should not be executed during definition');
     61  }
     62 }
     63 
     64 assert.compareArray(Object.getOwnPropertyNames(D), ['length', 'name', 'prototype'])
     65 
     66 class E {
     67  static *length() {
     68    throw new Test262Error('Static GeneratorMethod should not be executed during definition');
     69  }
     70 }
     71 
     72 assert.compareArray(Object.getOwnPropertyNames(E), ['length', 'name', 'prototype'])
     73 
     74 reportCompare(0, 0);