Java Script unit testing with YUI Test and Jack mocking framework

code.js

JSUnitTesting = {
    getPredefinedReasons: function () {
        var values = [];
        $("input[type='checkbox']").each(function () {
            values.push($(this).is(":checked"));
        });
        return values;
    },
    getCustomReason: function () {
        return $("input[type='text']:first").val();
    },
    validate: function (predefinedReasons, customReason) {
        var numberOfSelectedPredefiniedReasons = 0;
        for (var i = 0; i < predefinedReasons.length; i++) {
            if (predefinedReasons[i]) {
                numberOfSelectedPredefiniedReasons++;
            }
        }
        var isCustomResonSelected = customReason.length > 0;
        if (numberOfSelectedPredefiniedReasons > 0 && isCustomResonSelected) return false;
        if (numberOfSelectedPredefiniedReasons == 0 && !isCustomResonSelected) return false;
        return true;
    },
    init: function () {
        var self = this;
        $("form").submit(function () {
            self.formSubmission();
            return false;
        });
    },
    submitForm: function () {
        var predefinedReasons = this.getPredefinedReasons();
        var customReason = this.getCustomReason();
        if (!this.validate(predefinedReasons, customReason)) {
            this.notify("Wrong ! Select either one (or more checkboxes) " + "or type a custom reason.");
        } else {
            this.notify("Correct !");
        }
    },
    notify: function (message) {
        alert(message);
    }
};