#Invoke pester install
Now for the helper script, I need to make sure some basic modules (Pester included 🤓) are available on the VM my task will run on and if they are not, I’ll install them from the Powershell Gallery. Finally, I want to publish the test results I’ll have Pester output as NUnit file. I could have used an inline script here instead, but as I mentioned I want to be able to run tests the same way on my machine, so an helper script seems the best solution for the job. The task I choose is Powershell ( indicates this is version 2 of the Powershell Task), I want to use Powershell Core ( pwsh: true) and filePath points to the script in the root folder of my repo I want to use to run Pester. The trigger is what causes the build task to start: in my case, any merge/push operation to my master branch will do. # Add steps that build, run tests, deploy, and more: Since Pester 5 it’s advised to call Pester by creating a pesterconfiguration instead of using different parameters in the Invoke-Pester function. # Start with a minimal pipeline that you can customize to build and deploy your code.
So I did and this is how my yaml file looks like: # Starter pipeline Checks Type - Runnig Pester in the Background Invoke with Output Object Get Summary of Pester Display only Failed Tests PowerShell saves all Errors in.
#Invoke pester code
Well, since it’s powershell we’re talking about, why not try with a Powershell task instead? 🤔 You will see that Pester has checked to see if the files exist and, as they have not, has created these two files, HelloWorld.ps1 and 1 for you, and put in sufficient skeletal code to run the unit test, so let’s just invoke Pester to test the empty function: 1.
#Invoke pester how to
Admittedly I run a few tests but I did not spent hours trying to figure it out (so if anyone knows how to make those extension work, feel free to leave a comment!), my whole point was to have something quick and easy to run those tests also, I wanted to be able to run the same command or script both on my machine and on Azure Pipelines. So far so good, the problem I was not able to resolve though is that it seems these extensions make assumptions on the structure of the repo and files to test and I didn’t want to change that. I installed both extensions and added them (one at a time of course 😊) to my yaml file. The Azure Devops Marketplace has (as of this post) two free extensions to run Pester tasks so I decided to try them. Since I don’t have a yaml file already, I’ll select Starter pipeline starter pipelineĪt this point in my tests things got a bit murky. The first time we setup this integration, Azure Pipelines must be authorized to access Github: authorize azure pipelines approve and install azure pipelines grant azure pipelines access
Since my code is in Github, that’s what I’ll choose: Builds, Github (yaml) The first thing I need is an account on Azure DevOps (you can start with a free account) and when ready, head to Pipelines then Builds: Azure Pipelines Builds Im trying to invoke a pester script, moving from pester V4.6.0 to V5.3.
At this point I do not care too much about my dev branch because I know I’ll commit often and things will not always be stable, but I’ll make sure all my test will pass before I merge from dev to master (and later I way want to publish from master to the Powershell Gallery, but only if all tests pass of course!). $RemoteHost = Read-Host 'Enter the computer to connect' $userprincipalname = " $( ( $ env : USERNAME ) $creds = ( Get-Credential -Message 'Enter the credentials' -UserName $userprincipalname ) Enter-PSSession -ComputerName $RemoteHost -Credential $creds Import-Module Pester -MinimumVersion 4.4.Now that I have some simple functions and some tests in my master branch on Github, I want to make sure the tests are executed (and pass!) every time I merge some new code.
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