text: // Copyright 2015 the V8 project authors. All rights reserved.
  // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  //
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  // modification, are permitted provided that the following conditions
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  // 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
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  //
  // 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
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  // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  // Flags: --harmony-sloppy
  
  description('Tests for ES6 class syntax "super"');
  
  var baseMethodValue = {};
  var valueInSetter = null;
  
  class Base {
      constructor() { }
      baseMethod() { return baseMethodValue; }
      chainMethod() { return 'base'; }
      static staticMethod() { return 'base3'; }
  }
  
  class Derived extends Base {
      constructor() { super(); }
      chainMethod() { return [super.chainMethod(), 'derived']; }
      callBaseMethod() { return super.baseMethod(); }
      get callBaseMethodInGetter() { return super['baseMethod'](); }
      set callBaseMethodInSetter(x) { valueInSetter = super.baseMethod(); }
      get baseMethodInGetterSetter() { return super.baseMethod; }
      set baseMethodInGetterSetter(x) { valueInSetter = super['baseMethod']; }
      static staticMethod() { return super.staticMethod(); }
  }
  
  class SecondDerived extends Derived {
      constructor() { super(); }
      chainMethod() { return super.chainMethod().concat(['secondDerived']); }
  }
  
  shouldBeTrue('(new Base) instanceof Base');
  shouldBeTrue('(new Derived) instanceof Derived');
  shouldBe('(new Derived).callBaseMethod()', 'baseMethodValue');
  shouldBe('x = (new Derived).callBaseMethod; x()', 'baseMethodValue');
  shouldBe('(new Derived).callBaseMethodInGetter', 'baseMethodValue');
  shouldBe('(new Derived).callBaseMethodInSetter = 1; valueInSetter', 'baseMethodValue');
  shouldBe('(new Derived).baseMethodInGetterSetter', '(new Base).baseMethod');
  shouldBe('(new Derived).baseMethodInGetterSetter = 1; valueInSetter', '(new Base).baseMethod');
  shouldBe('Derived.staticMethod()', '"base3"');
  shouldBe('(new SecondDerived).chainMethod()', '["base", "derived", "secondDerived"]');
  shouldNotThrow('x = class extends Base { constructor() { super(); } super() {} }');
  shouldThrow('x = class extends Base { constructor() { super(); } method() { super() } }',
      '"SyntaxError: \'super\' keyword unexpected here"');
  shouldThrow('x = class extends Base { constructor() { super(); } method() { super } }', '"SyntaxError: \'super\' keyword unexpected here"');
  shouldThrow('x = class extends Base { constructor() { super(); } method() { return new super } }', '"SyntaxError: \'super\' keyword unexpected here"');
  // shouldBeTrue('(new x).method() instanceof Base');
  // shouldBeFalse('(new x).method() instanceof x');
  shouldNotThrow('x = class extends Base { constructor() { super(); } method1() { delete (super.foo) } method2() { delete super["foo"] } }');
  shouldThrow('(new x).method1()', '"ReferenceError: Unsupported reference to \'super\'"');
  shouldThrow('(new x).method2()', '"ReferenceError: Unsupported reference to \'super\'"');
  shouldBeTrue('new (class { constructor() { return undefined; } }) instanceof Object');
  shouldBeTrue('new (class { constructor() { return 1; } }) instanceof Object');
  shouldThrow('new (class extends Base { constructor() { return undefined } })');
  shouldBeTrue('new (class extends Base { constructor() { super(); return undefined } }) instanceof Object');
  shouldBe('x = { }; new (class extends Base { constructor() { return x } });', 'x');
  shouldBeFalse('x instanceof Base');
  shouldThrow('new (class extends Base { constructor() { } })', '"ReferenceError: this is not defined"');
  shouldThrow('new (class extends Base { constructor() { return 1; } })', '"TypeError: Derived constructors may only return object or undefined"');
  shouldThrow('new (class extends null { constructor() { return undefined } })');
  shouldThrow('new (class extends null { constructor() { super(); return undefined } })', '"TypeError: super is not a constructor"');
  shouldBe('x = { }; new (class extends null { constructor() { return x } });', 'x');
  shouldBeTrue('x instanceof Object');
  shouldThrow('new (class extends null { constructor() { } })', '"ReferenceError: this is not defined"');
  shouldThrow('new (class extends null { constructor() { return 1; } })', '"TypeError: Derived constructors may only return object or undefined"');
  shouldThrow('new (class extends null { constructor() { super() } })', '"TypeError: super is not a constructor"');
  shouldThrow('new (class { constructor() { super() } })', '"SyntaxError: \'super\' keyword unexpected here"');
  shouldThrow('function x() { super(); }', '"SyntaxError: \'super\' keyword unexpected here"');
  shouldThrow('new (class extends Object { constructor() { function x() { super() } } })', '"SyntaxError: \'super\' keyword unexpected here"');
  shouldThrow('new (class extends Object { constructor() { function x() { super.method } } })', '"SyntaxError: \'super\' keyword unexpected here"');
  shouldThrow('function x() { super.method(); }', '"SyntaxError: \'super\' keyword unexpected here"');
  shouldThrow('function x() { super(); }', '"SyntaxError: \'super\' keyword unexpected here"');
  
  var successfullyParsed = true;
  