1 Tests for ES6 class syntax "extends" 2 3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". 4 5 6 PASS (new Base) instanceof Base is true 7 PASS Object.getPrototypeOf(new Base) is Base.prototype 8 PASS (new Derived) instanceof Derived is true 9 PASS Object.getPrototypeOf(new Derived) is Derived.prototype 10 PASS Object.getPrototypeOf(Derived.prototype) is Base.prototype 11 PASS (new Derived).baseMethod() is "base" 12 PASS (new Derived).overridenMethod() is "derived" 13 PASS Derived.staticBaseMethod() is "base" 14 PASS Derived.staticOverridenMethod() is "derived" 15 PASS x = class extends threw exception SyntaxError: Unexpected end of input. 16 PASS x = class extends threw exception SyntaxError: Unexpected end of input. 17 PASS x = class extends Base { threw exception SyntaxError: Unexpected end of input. 18 PASS x = class extends Base { } did not throw exception. 19 PASS x = class extends Base { constructor() { } } did not throw exception. 20 PASS x.__proto__ is Base 21 PASS Object.getPrototypeOf(x) is Base 22 PASS x.prototype.__proto__ is Base.prototype 23 PASS Object.getPrototypeOf(x.prototype) is Base.prototype 24 PASS x = class extends null { constructor() { } }; x.__proto__ is Function.prototype 25 PASS x.__proto__ is Function.prototype 26 PASS x = class extends 3 { constructor() { } }; x.__proto__ threw exception TypeError: Class extends value 3 is not a function or null. 27 PASS x = class extends "abc" { constructor() { } }; x.__proto__ threw exception TypeError: Class extends value abc is not a function or null. 28 PASS baseWithBadPrototype = function () {}; baseWithBadPrototype.prototype = 3; new baseWithBadPrototype did not throw exception. 29 PASS x = class extends baseWithBadPrototype { constructor() { } } threw exception TypeError: Class extends value does not have valid prototype property 3. 30 PASS baseWithBadPrototype.prototype = "abc" did not throw exception. 31 PASS x = class extends baseWithBadPrototype { constructor() { } } threw exception TypeError: Class extends value does not have valid prototype property abc. 32 PASS baseWithBadPrototype.prototype = null; x = class extends baseWithBadPrototype { constructor() { } } did not throw exception. 33 PASS x = 1; c = class extends ++x { constructor() { } }; threw exception SyntaxError: Unexpected token ++. 34 PASS x = 1; c = class extends x++ { constructor() { } }; threw exception SyntaxError: Unexpected token ++. 35 PASS x = 1; c = class extends (++x) { constructor() { } }; threw exception TypeError: Class extends value 2 is not a function or null. 36 PASS x = 1; c = class extends (x++) { constructor() { } }; threw exception TypeError: Class extends value 1 is not a function or null. 37 PASS x = 1; try { c = class extends (++x) { constructor() { } } } catch (e) { }; x is 2 38 PASS x = 1; try { c = class extends (x++) { constructor() { } } } catch (e) { }; x is 2 39 PASS namespace = {}; namespace.A = class { }; namespace.B = class extends namespace.A { } did not throw exception. 40 PASS namespace = {}; namespace.A = class A { }; namespace.B = class B extends namespace.A { } did not throw exception. 41 PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends namespace.A { constructor() { } } did not throw exception. 42 PASS namespace = {}; namespace.A = class A { constructor() { } }; namespace.B = class B extends namespace.A { constructor() { } } did not throw exception. 43 PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (namespace.A) { constructor() { } } did not throw exception. 44 PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends namespace["A"] { constructor() { } } did not throw exception. 45 PASS namespace = {}; namespace.A = class { constructor() { } }; function getClassA() { return namespace.A }; namespace.B = class extends getClassA() { constructor() { } } did not throw exception. 46 PASS namespace = {}; namespace.A = class { constructor() { } }; function getClass(prop) { return namespace[prop] }; namespace.B = class extends getClass("A") { constructor() { } } did not throw exception. 47 PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (false||null||namespace.A) { constructor() { } } did not throw exception. 48 PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends false||null||namespace.A { constructor() { } } threw exception SyntaxError: Unexpected token ||. 49 PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (x++, namespace.A) { constructor() { } }; did not throw exception. 50 PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (namespace.A, x++) { constructor() { } }; threw exception TypeError: Class extends value 1 is not a function or null. 51 PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends new namespace.A { constructor() { } } threw exception TypeError: Class extends value [object Object] is not a function or null. 52 PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends new namespace.A() { constructor() { } } threw exception TypeError: Class extends value [object Object] is not a function or null. 53 PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; try { namespace.B = class extends (x++, namespace.A) { constructor() { } } } catch (e) { } x is 2 54 PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; try { namespace.B = class extends (namespace.A, x++) { constructor() { } } } catch (e) { } x is 2 55 PASS Object.getPrototypeOf((class { constructor () { } }).prototype) is Object.prototype 56 PASS Object.getPrototypeOf((class extends null { constructor () { super(); } }).prototype) is null 57 PASS new (class extends undefined { constructor () { this } }) threw exception TypeError: Class extends value undefined is not a function or null. 58 PASS new (class extends undefined { constructor () { super(); } }) threw exception TypeError: Class extends value undefined is not a function or null. 59 PASS x = {}; new (class extends undefined { constructor () { return x; } }) threw exception TypeError: Class extends value undefined is not a function or null. 60 PASS y = 12; new (class extends undefined { constructor () { return y; } }) threw exception TypeError: Class extends value undefined is not a function or null. 61 PASS class x {}; new (class extends null { constructor () { return new x; } }) instanceof x is true 62 PASS new (class extends null { constructor () { this; } }) threw exception ReferenceError: this is not defined. 63 PASS new (class extends null { constructor () { super(); } }) threw exception TypeError: super is not a constructor. 64 PASS x = {}; new (class extends null { constructor () { return x } }) is x 65 PASS y = 12; new (class extends null { constructor () { return y; } }) threw exception TypeError: Derived constructors may only return object or undefined. 66 PASS class x {}; new (class extends null { constructor () { return new x; } }) instanceof x is true 67 PASS x = null; Object.getPrototypeOf((class extends x { }).prototype) is null 68 PASS Object.prototype.isPrototypeOf(class { }) is true 69 PASS Function.prototype.isPrototypeOf(class { }) is true 70 PASS successfullyParsed is true 71 72 TEST COMPLETE 73
