validateWhileEditingTest.js

(function () {
    "use strict";

    buster.testCase("refute.calledWith fails badly in IE8", {
        "it's just crazy dude": function () {
            var spy = this.spy();
            spy("'actual-value'");
            refute.calledWith(spy, "'test-value'");
        }
    });
}());

Results in

[refute.calledWith] Expected function spy() {} not to be called with arguments 'test-value' spy('actual-value')

The same happens with assert.calledWith - in that it always passes.

All these pass in the example above:

assert.calledWith(spy);
assert.calledWith(spy, "'actual-value'");
assert.calledWith(spy, "'wrong-value'");
assert.calledWith(spy, "'wrong-value'", "more", "wrong", "stuff");
assert.calledWith(spy, Infinity);