Unit testing is an important part of software development because it helps capture bugs before it moves on to QA or even customers. However, it’s not part of the end product therefore whatever you invest in unit testing will not yield any direct result but indirect result in better quality of your product. So at one side, you want to do it more for better quality; on the other side, you want to minimize it for less investment. It’s therefore a tricky trade off for best ROI. For more discussion, see here.
My company has created products like vSearch ("Super vCenter"), vijavaNG APIs, EAM APIs, ICE tool. We also help clients with virtualization and cloud computing on customized development, training. Should you, or someone you know, need these products and services, please feel free to contact me: steve __AT__ doublecloud.org.
Me: Steve Jin, VMware vExpert who authored the VMware VI and vSphere SDK by Prentice Hall, and created the de factor open source vSphere Java API while working at VMware engineering. Companies like Cisco, EMC, NetApp, HP, Dell, VMware, are among the users of the API and other tools I developed for their products, internal IT orchestration, and test automation.