Unit Testing Modules for Powershell

A question was asked 3 years ago about the Frameworks PowerShell Unit, How to do TDD and unit testing in powershell? , and all the frameworks were completely new at this point:

• PSUnit: http://www.psunit.org/
• Pester: https://github.com/scottmuc/Pester
• PowerSpec: on github / shishkin / PowerSpec

After 3 years, I assume that they have developed and matured. Now I would like to do TDD (I have never done it before), and I don’t know which one to use. Internet searches look like the most used PSUnit and Pester.

Do you use them? What are the pros and cons of each? Any recommendations?

Thank,