// Copyright (C) 2014 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 14.5 description: > class prototype wiring ---*/ class Base { constructor(x) { this.foobar = x; } } class Subclass extends Base { constructor(x) { super(x); } } var s = new Subclass(1); assert.sameValue(s.foobar, 1, "The value of `s.foobar` is `1`"); assert.sameValue( Object.getPrototypeOf(s), Subclass.prototype, "`Object.getPrototypeOf(s)` returns `Subclass.prototype`" ); var s1 = new Subclass(1, 2); assert.sameValue(s1.foobar, 1, "The value of `s1.foobar` is `1`"); assert.sameValue( Object.getPrototypeOf(s1) === Subclass.prototype, true, "The result of `Object.getPrototypeOf(s1) === Subclass.prototype` is `true`" ); var s2 = new Subclass(); assert.sameValue(s2.foobar, undefined, "The value of `s2.foobar` is `undefined`"); assert.sameValue( Object.getPrototypeOf(s2), Subclass.prototype, "`Object.getPrototypeOf(s2)` returns `Subclass.prototype`" ); assert.throws(TypeError, function() { Subclass(1); }); assert.throws(TypeError, function() { Subclass(1,2,3,4); }); class Subclass2 extends Subclass { constructor() { super(5, 6, 7); } } var ss2 = new Subclass2(); assert.sameValue(ss2.foobar, 5, "The value of `ss2.foobar` is `5`"); assert.sameValue( Object.getPrototypeOf(ss2), Subclass2.prototype, "`Object.getPrototypeOf(ss2)` returns `Subclass2.prototype`" ); class Subclass3 extends Base { constructor(x, y) { super(x + y); } } var ss3 = new Subclass3(27,42-27); assert.sameValue(ss3.foobar, 42, "The value of `ss3.foobar` is `42`"); assert.sameValue( Object.getPrototypeOf(ss3), Subclass3.prototype, "`Object.getPrototypeOf(ss3)` returns `Subclass3.prototype`" ); reportCompare(0, 0);