It's been a while since I wanted to test Pester and I finally find the time to test it. Pester is a BDD (Behaviour-Driven Development) based test runner for PowerShell (https://github.com/pester/Pester/wiki/Pester). We want to use this kind of tool when we want to verify that the result of a PowerShell function is really what we are waiting for. It is useful when we are modifying code we want to assure that the result is still the same.
To install Pester, enter the following command : Install-Module -Name Pester
To verify Pester has been correctly installed : Get-Module -ListAvailable -Name Pester
To import Pester : Import-Module -Name Pester
In my next article, I will explain a simple case study !