// Copyright (C) 2016 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 19.3.1 description: Subclassing Function info: | 19.3.1 The Boolean Constructor The Boolean constructor is designed to be subclassable. It may be used as the value of an extends clause of a class definition. ... ---*/ class Bln extends Boolean {} var b1 = new Bln(1); assert.notSameValue(b1, true, 'b1 is an Boolean object'); assert.sameValue(b1.valueOf(), true); var b2 = new Bln(0); assert.notSameValue(b2, false, 'bln is an Boolean object'); assert.sameValue(b2.valueOf(), false); reportCompare(0, 0);