src/v8/test/webkit/class-syntax-default-constructor.js

// Copyright 2015 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1.  Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
// 2.  Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

description('Tests for ES6 class syntax default constructor');

class A { };
class B extends A { };

shouldBeTrue('new A instanceof A');
shouldThrow('A()', '"TypeError: Class constructor A cannot be invoked without \'new\'"');
shouldBeTrue('A.prototype.constructor instanceof Function');
shouldBe('A.prototype.constructor.name', '"A"');
shouldBeTrue('new B instanceof A; new B instanceof A');
shouldThrow('B()', '"TypeError: Class constructor B cannot be invoked without \'new\'"');
shouldBe('B.prototype.constructor.name', '"B"');
shouldBeTrue('A !== B');
shouldBeTrue('A.prototype.constructor !== B.prototype.constructor');
shouldBe('new (class extends (class { constructor(a, b) { return [a, b]; } }) {})(1, 2)', '[1, 2]');

var successfullyParsed = true;