One of the lessons my father taught me is that a craftsman is known by the quality of his tools. Many times in the past, programmers were limited by untrained managers in the tools they were allowed to use or have access to. This was akin to hospital administrators guiding open heart surgery. It's a poor strategy.
Fortunately, open source does not have the stigma that freeware has. You can download the open source NUnit for free, and many people, including managers, have heard of xUnit testing frameworks due in part to the extreme programming (XP) movement.
Writing test fixtures and test suites will result in some of the most productive and constructive testing that you will ever do.