new-sc-line-method-static-private-fields.js (2034B)
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-new-sc-line-method.template 4 /*--- 5 description: static private fields (field definitions followed by a method in a new line with a semicolon) 6 esid: prod-FieldDefinition 7 features: [class-static-fields-private, class, class-fields-public] 8 flags: [generated] 9 includes: [propertyHelper.js] 10 info: | 11 ClassElement : 12 ... 13 static FieldDefinition ; 14 15 FieldDefinition : 16 ClassElementName Initializer_opt 17 18 ClassElementName : 19 PrivateName 20 21 PrivateName : 22 # IdentifierName 23 24 ---*/ 25 26 27 var C = class { 28 static #x; static #y; 29 m() { return 42; } 30 static x() { 31 this.#x = 42; 32 return this.#x; 33 } 34 static y() { 35 this.#y = 43; 36 return this.#y; 37 } 38 } 39 40 var c = new C(); 41 42 assert.sameValue(c.m(), 42); 43 assert.sameValue(c.m, C.prototype.m); 44 assert( 45 !Object.prototype.hasOwnProperty.call(c, "m"), 46 "m doesn't appear as an own property on the C instance" 47 ); 48 49 verifyProperty(C.prototype, "m", { 50 enumerable: false, 51 configurable: true, 52 writable: true, 53 }); 54 55 // Test the private fields do not appear as properties before set to value 56 assert(!Object.prototype.hasOwnProperty.call(C.prototype, "#x"), "test 1"); 57 assert(!Object.prototype.hasOwnProperty.call(C, "#x"), "test 2"); 58 assert(!Object.prototype.hasOwnProperty.call(c, "#x"), "test 3"); 59 60 assert(!Object.prototype.hasOwnProperty.call(C.prototype, "#y"), "test 4"); 61 assert(!Object.prototype.hasOwnProperty.call(C, "#y"), "test 5"); 62 assert(!Object.prototype.hasOwnProperty.call(c, "#y"), "test 6"); 63 64 // Test if private fields can be sucessfully accessed and set to value 65 assert.sameValue(C.x(), 42, "test 7"); 66 assert.sameValue(C.y(), 43, "test 8"); 67 68 // Test the private fields do not appear as properties before after set to value 69 assert(!Object.prototype.hasOwnProperty.call(C, "#x"), "test 9"); 70 assert(!Object.prototype.hasOwnProperty.call(C, "#y"), "test 10"); 71 72 reportCompare(0, 0);