The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/ecma_5/Function/function-caller.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,87 @@
     1.4 +/*
     1.5 + * Any copyright is dedicated to the Public Domain.
     1.6 + * http://creativecommons.org/licenses/publicdomain/
     1.7 + */
     1.8 +
     1.9 +var gTestfile = 'function-caller.js';
    1.10 +var BUGNUMBER = 514581;
    1.11 +var summary = "Function.prototype.caller should throw a TypeError for " +
    1.12 +              "strict-mode functions";
    1.13 +
    1.14 +print(BUGNUMBER + ": " + summary);
    1.15 +
    1.16 +/**************
    1.17 + * BEGIN TEST *
    1.18 + **************/
    1.19 +
    1.20 +// behavior
    1.21 +
    1.22 +function expectTypeError(fun)
    1.23 +{
    1.24 +  try
    1.25 +  {
    1.26 +    fun();
    1.27 +    throw new Error("didn't throw");
    1.28 +  }
    1.29 +  catch (e)
    1.30 +  {
    1.31 +    assertEq(e instanceof TypeError, true,
    1.32 +             "expected TypeError calling function" +
    1.33 +             ("name" in fun ? " " + fun.name : "") + ", instead got: " + e);
    1.34 +  }
    1.35 +}
    1.36 +
    1.37 +function bar() { "use strict"; }
    1.38 +expectTypeError(function barCaller() { bar.caller; });
    1.39 +
    1.40 +function baz() { "use strict"; return 17; }
    1.41 +expectTypeError(function bazCaller() { baz.caller; });
    1.42 +
    1.43 +
    1.44 +// accessor identity
    1.45 +
    1.46 +function strictMode() { "use strict"; return 42; }
    1.47 +var canonicalTTE = Object.getOwnPropertyDescriptor(strictMode, "caller").get;
    1.48 +
    1.49 +var barCaller = Object.getOwnPropertyDescriptor(bar, "caller");
    1.50 +assertEq("get" in barCaller, true);
    1.51 +assertEq("set" in barCaller, true);
    1.52 +assertEq(barCaller.get, canonicalTTE);
    1.53 +assertEq(barCaller.set, canonicalTTE);
    1.54 +
    1.55 +var barArguments = Object.getOwnPropertyDescriptor(bar, "arguments");
    1.56 +assertEq("get" in barArguments, true);
    1.57 +assertEq("set" in barArguments, true);
    1.58 +assertEq(barArguments.get, canonicalTTE);
    1.59 +assertEq(barArguments.set, canonicalTTE);
    1.60 +
    1.61 +var bazCaller = Object.getOwnPropertyDescriptor(baz, "caller");
    1.62 +assertEq("get" in bazCaller, true);
    1.63 +assertEq("set" in bazCaller, true);
    1.64 +assertEq(bazCaller.get, canonicalTTE);
    1.65 +assertEq(bazCaller.set, canonicalTTE);
    1.66 +
    1.67 +var bazArguments = Object.getOwnPropertyDescriptor(baz, "arguments");
    1.68 +assertEq("get" in bazArguments, true);
    1.69 +assertEq("set" in bazArguments, true);
    1.70 +assertEq(bazArguments.get, canonicalTTE);
    1.71 +assertEq(bazArguments.set, canonicalTTE);
    1.72 +
    1.73 +
    1.74 +// [[ThrowTypeError]] characteristics
    1.75 +
    1.76 +assertEq(Object.prototype.toString.call(canonicalTTE), "[object Function]");
    1.77 +assertEq(Object.getPrototypeOf(canonicalTTE), Function.prototype);
    1.78 +assertEq(canonicalTTE.length, 0);
    1.79 +assertEq(Object.isExtensible(canonicalTTE), false);
    1.80 +canonicalTTE.lumpy = 17;
    1.81 +assertEq(canonicalTTE.hasOwnProperty("lumpy"), false);
    1.82 +assertEq("lumpy" in canonicalTTE, false);
    1.83 +expectTypeError(function setTTEProp() { "use strict"; canonicalTTE.x = 42; });
    1.84 +
    1.85 +/******************************************************************************/
    1.86 +
    1.87 +if (typeof reportCompare === "function")
    1.88 +  reportCompare(true, true);
    1.89 +
    1.90 +print("All tests passed!");