regular-definitions-static-private-fields.js (1651B)
1 // This file was procedurally generated from the following sources: 2 // - src/class-elements/static-private-fields.case 3 // - src/class-elements/productions/cls-expr-regular-definitions.template 4 /*--- 5 description: static private fields (regular fields defintion) 6 esid: prod-FieldDefinition 7 features: [class-static-fields-private, class, class-fields-public] 8 flags: [generated] 9 info: | 10 ClassElement : 11 ... 12 static FieldDefinition ; 13 14 FieldDefinition : 15 ClassElementName Initializer_opt 16 17 ClassElementName : 18 PrivateName 19 20 PrivateName : 21 # IdentifierName 22 23 ---*/ 24 25 26 var C = class { 27 static #x; static #y 28 static x() { 29 this.#x = 42; 30 return this.#x; 31 } 32 static y() { 33 this.#y = 43; 34 return this.#y; 35 } 36 } 37 38 var c = new C(); 39 40 // Test the private fields do not appear as properties before set to value 41 assert(!Object.prototype.hasOwnProperty.call(C.prototype, "#x"), "test 1"); 42 assert(!Object.prototype.hasOwnProperty.call(C, "#x"), "test 2"); 43 assert(!Object.prototype.hasOwnProperty.call(c, "#x"), "test 3"); 44 45 assert(!Object.prototype.hasOwnProperty.call(C.prototype, "#y"), "test 4"); 46 assert(!Object.prototype.hasOwnProperty.call(C, "#y"), "test 5"); 47 assert(!Object.prototype.hasOwnProperty.call(c, "#y"), "test 6"); 48 49 // Test if private fields can be sucessfully accessed and set to value 50 assert.sameValue(C.x(), 42, "test 7"); 51 assert.sameValue(C.y(), 43, "test 8"); 52 53 // Test the private fields do not appear as properties before after set to value 54 assert(!Object.prototype.hasOwnProperty.call(C, "#x"), "test 9"); 55 assert(!Object.prototype.hasOwnProperty.call(C, "#y"), "test 10"); 56 57 reportCompare(0, 0);