Caja.js unittests should fail on multiple evaluation

[kpreid]

Original issue 13 created by mikesamuel on 2007-12-05T04:22:32.000Z:

Jeff Walden reports that
var o =
{
toString: function()
{
if (firstTime)
{
firstTime = false;
return "toString"; // guessing this is readable on functions
}
return "constructor";
}
};
triggered a bug in readPub__ causing it to return the constructor.

We should use a similar trick to define an object

function singleUseFunction(x) {
var called = false;
return function () {
if (called) { throw new Error('Called multiple times'); }
called = true;
return x;
};
}

var o = {
toString: singleUseFunction('x'),
valueOf: singleUseFunction('x')
};

and pass o as a key to readPub et al.

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?

Please use labels and text to provide additional information.

[kpreid]

Comment #1 originally posted by anil262646 on 2008-01-23T12:03:35.000Z:

<empty>

[kpreid]

Comment #2 originally posted by mikesamuel on 2008-05-28T01:48:40.000Z:

<empty>

[kpreid]

Comment #3 originally posted by metaweta on 2008-05-28T19:36:07.000Z:

<empty>

[kpreid]

Comment #4 originally posted by metaweta on 2008-05-28T21:56:26.000Z:

Refiling this as issue323, highlighting it as a bug in Caja rather than in our unit
tests.