michael@0: /*
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/licenses/publicdomain/
michael@0:  */
michael@0: 
michael@0: var gTestfile = 'function-caller.js';
michael@0: var BUGNUMBER = 514581;
michael@0: var summary = "Function.prototype.caller should throw a TypeError for " +
michael@0:               "strict-mode functions";
michael@0: 
michael@0: print(BUGNUMBER + ": " + summary);
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: // behavior
michael@0: 
michael@0: function expectTypeError(fun)
michael@0: {
michael@0:   try
michael@0:   {
michael@0:     fun();
michael@0:     throw new Error("didn't throw");
michael@0:   }
michael@0:   catch (e)
michael@0:   {
michael@0:     assertEq(e instanceof TypeError, true,
michael@0:              "expected TypeError calling function" +
michael@0:              ("name" in fun ? " " + fun.name : "") + ", instead got: " + e);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function bar() { "use strict"; }
michael@0: expectTypeError(function barCaller() { bar.caller; });
michael@0: 
michael@0: function baz() { "use strict"; return 17; }
michael@0: expectTypeError(function bazCaller() { baz.caller; });
michael@0: 
michael@0: 
michael@0: // accessor identity
michael@0: 
michael@0: function strictMode() { "use strict"; return 42; }
michael@0: var canonicalTTE = Object.getOwnPropertyDescriptor(strictMode, "caller").get;
michael@0: 
michael@0: var barCaller = Object.getOwnPropertyDescriptor(bar, "caller");
michael@0: assertEq("get" in barCaller, true);
michael@0: assertEq("set" in barCaller, true);
michael@0: assertEq(barCaller.get, canonicalTTE);
michael@0: assertEq(barCaller.set, canonicalTTE);
michael@0: 
michael@0: var barArguments = Object.getOwnPropertyDescriptor(bar, "arguments");
michael@0: assertEq("get" in barArguments, true);
michael@0: assertEq("set" in barArguments, true);
michael@0: assertEq(barArguments.get, canonicalTTE);
michael@0: assertEq(barArguments.set, canonicalTTE);
michael@0: 
michael@0: var bazCaller = Object.getOwnPropertyDescriptor(baz, "caller");
michael@0: assertEq("get" in bazCaller, true);
michael@0: assertEq("set" in bazCaller, true);
michael@0: assertEq(bazCaller.get, canonicalTTE);
michael@0: assertEq(bazCaller.set, canonicalTTE);
michael@0: 
michael@0: var bazArguments = Object.getOwnPropertyDescriptor(baz, "arguments");
michael@0: assertEq("get" in bazArguments, true);
michael@0: assertEq("set" in bazArguments, true);
michael@0: assertEq(bazArguments.get, canonicalTTE);
michael@0: assertEq(bazArguments.set, canonicalTTE);
michael@0: 
michael@0: 
michael@0: // [[ThrowTypeError]] characteristics
michael@0: 
michael@0: assertEq(Object.prototype.toString.call(canonicalTTE), "[object Function]");
michael@0: assertEq(Object.getPrototypeOf(canonicalTTE), Function.prototype);
michael@0: assertEq(canonicalTTE.length, 0);
michael@0: assertEq(Object.isExtensible(canonicalTTE), false);
michael@0: canonicalTTE.lumpy = 17;
michael@0: assertEq(canonicalTTE.hasOwnProperty("lumpy"), false);
michael@0: assertEq("lumpy" in canonicalTTE, false);
michael@0: expectTypeError(function setTTEProp() { "use strict"; canonicalTTE.x = 42; });
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: if (typeof reportCompare === "function")
michael@0:   reportCompare(true, true);
michael@0: 
michael@0: print("All tests passed!");