1// Copyright 2015 the V8 project authors. All rights reserved. 2// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions 6// are met: 7// 1. Redistributions of source code must retain the above copyright 8// notice, this list of conditions and the following disclaimer. 9// 2. Redistributions in binary form must reproduce the above copyright 10// notice, this list of conditions and the following disclaimer in the 11// documentation and/or other materials provided with the distribution. 12// 13// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24// Flags: --harmony-sloppy 25 26description('Tests for ES6 class syntax "super"'); 27 28var baseMethodValue = {}; 29var valueInSetter = null; 30 31class Base { 32 constructor() { } 33 baseMethod() { return baseMethodValue; } 34 chainMethod() { return 'base'; } 35 static staticMethod() { return 'base3'; } 36} 37 38class Derived extends Base { 39 constructor() { super(); } 40 chainMethod() { return [super.chainMethod(), 'derived']; } 41 callBaseMethod() { return super.baseMethod(); } 42 get callBaseMethodInGetter() { return super['baseMethod'](); } 43 set callBaseMethodInSetter(x) { valueInSetter = super.baseMethod(); } 44 get baseMethodInGetterSetter() { return super.baseMethod; } 45 set baseMethodInGetterSetter(x) { valueInSetter = super['baseMethod']; } 46 static staticMethod() { return super.staticMethod(); } 47} 48 49class SecondDerived extends Derived { 50 constructor() { super(); } 51 chainMethod() { return super.chainMethod().concat(['secondDerived']); } 52} 53 54shouldBeTrue('(new Base) instanceof Base'); 55shouldBeTrue('(new Derived) instanceof Derived'); 56shouldBe('(new Derived).callBaseMethod()', 'baseMethodValue'); 57shouldBe('x = (new Derived).callBaseMethod; x()', 'baseMethodValue'); 58shouldBe('(new Derived).callBaseMethodInGetter', 'baseMethodValue'); 59shouldBe('(new Derived).callBaseMethodInSetter = 1; valueInSetter', 'baseMethodValue'); 60shouldBe('(new Derived).baseMethodInGetterSetter', '(new Base).baseMethod'); 61shouldBe('(new Derived).baseMethodInGetterSetter = 1; valueInSetter', '(new Base).baseMethod'); 62shouldBe('Derived.staticMethod()', '"base3"'); 63shouldBe('(new SecondDerived).chainMethod()', '["base", "derived", "secondDerived"]'); 64shouldNotThrow('x = class extends Base { constructor() { super(); } super() {} }'); 65shouldThrow('x = class extends Base { constructor() { super(); } method() { super() } }', 66 '"SyntaxError: \'super\' keyword unexpected here"'); 67shouldThrow('x = class extends Base { constructor() { super(); } method() { super } }', '"SyntaxError: \'super\' keyword unexpected here"'); 68shouldThrow('x = class extends Base { constructor() { super(); } method() { return new super } }', '"SyntaxError: \'super\' keyword unexpected here"'); 69// shouldBeTrue('(new x).method() instanceof Base'); 70// shouldBeFalse('(new x).method() instanceof x'); 71shouldNotThrow('x = class extends Base { constructor() { super(); } method1() { delete (super.foo) } method2() { delete super["foo"] } }'); 72shouldThrow('(new x).method1()', '"ReferenceError: Unsupported reference to \'super\'"'); 73shouldThrow('(new x).method2()', '"ReferenceError: Unsupported reference to \'super\'"'); 74shouldBeTrue('new (class { constructor() { return undefined; } }) instanceof Object'); 75shouldBeTrue('new (class { constructor() { return 1; } }) instanceof Object'); 76shouldThrow('new (class extends Base { constructor() { return undefined } })'); 77shouldBeTrue('new (class extends Base { constructor() { super(); return undefined } }) instanceof Object'); 78shouldBe('x = { }; new (class extends Base { constructor() { return x } });', 'x'); 79shouldBeFalse('x instanceof Base'); 80shouldThrow('new (class extends Base { constructor() { } })', '"ReferenceError: this is not defined"'); 81shouldThrow('new (class extends Base { constructor() { return 1; } })', '"TypeError: Derived constructors may only return object or undefined"'); 82shouldThrow('new (class extends null { constructor() { return undefined } })'); 83shouldThrow('new (class extends null { constructor() { super(); return undefined } })', '"TypeError: super is not a constructor"'); 84shouldBe('x = { }; new (class extends null { constructor() { return x } });', 'x'); 85shouldBeTrue('x instanceof Object'); 86shouldThrow('new (class extends null { constructor() { } })', '"ReferenceError: this is not defined"'); 87shouldThrow('new (class extends null { constructor() { return 1; } })', '"TypeError: Derived constructors may only return object or undefined"'); 88shouldThrow('new (class extends null { constructor() { super() } })', '"TypeError: super is not a constructor"'); 89shouldThrow('new (class { constructor() { super() } })', '"SyntaxError: \'super\' keyword unexpected here"'); 90shouldThrow('function x() { super(); }', '"SyntaxError: \'super\' keyword unexpected here"'); 91shouldThrow('new (class extends Object { constructor() { function x() { super() } } })', '"SyntaxError: \'super\' keyword unexpected here"'); 92shouldThrow('new (class extends Object { constructor() { function x() { super.method } } })', '"SyntaxError: \'super\' keyword unexpected here"'); 93shouldThrow('function x() { super.method(); }', '"SyntaxError: \'super\' keyword unexpected here"'); 94shouldThrow('function x() { super(); }', '"SyntaxError: \'super\' keyword unexpected here"'); 95 96var successfullyParsed = true; 97