Import JSC class tests

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

-// Copyright 2013 the V8 project authors. All rights reserved.
+// 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(
-"This tests that inlining preserves function.arguments functionality if the arguments are reassigned to refer to an int32."
-);
+// Flags: --harmony-sloppy
 
-function foo() {
-    return bar.arguments;
-}
+description('Tests for ES6 class syntax default constructor');
 
-function bar(a,b,c) {
-    b = 42.5;
-    return foo(a,b,c);
-}
+class A { };
+class B extends A { };
 
-function baz(a,b,c) {
-    return bar(a,b,c);
-}
-
-function argsToStr(args) {
-    var str = args + ": ";
-    for (var i = 0; i < args.length; ++i) {
-        if (i)
-            str += ", ";
-        str += args[i];
-    }
-    return str;
-}
-
-for (var __i = 0; __i < 200; ++__i)
-    shouldBe("argsToStr(baz(\"a\" + __i, \"b\" + __i, \"c\" + __i))", "\"[object Arguments]: a" + __i + ", 42.5, c" + __i + "\"");
+shouldBeTrue('new A instanceof A');
+shouldThrow('A()', '"TypeError: Class constructors 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 constructors 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;