Pester test
![pester test pester test](https://user-images.githubusercontent.com/25097989/103371143-ffc8cc00-4ace-11eb-81d5-72e8e50990db.png)
When the whole container is finished, the TestDrive and all files and folders inside it is deleted. The problem with Test Cases is that we can only easily loop through one collection, but as Pester is just PowerShell we can simply use ForEach if we wanted to loop through multiple ones, like instances and then databases. Make sure the Test results files pattern matches what you configured as the Results file in the previous step.Modifications to items created in parent blocks are not reversed, see caution below. When exiting a block, files and folders created during it's lifetime will be removed.All files and folders created by your setups and tests are available during the lifetime of that block, including inner blocks.A clean TestDrive is created per container (test-file or scriptblock) on entry to the first top-level block (Describe or Context) in that container. Pester is a PowerShell module developed by Scott Muc and is improved by the community.Scoping īasic scoping rules are implemented for the TestDrive:
![pester test pester test](https://i1.wp.com/sqldbawithabeard.com/wp-content/uploads/2017/05/07-fails.png)
You may use this drive to isolate the file operations of your test to a temporary store. Pester will remove this drive after the tests completes. Storage > Pools I am using a pretty simple pester test for this work. Pester creates a PSDrive inside the user's temporary drive that is accessible via a named PSDrive TestDrive. I receive the message Starting PowerShell Monitor Test Powershell I would. It is usually desirable not to perform file activity tests that will produce side effects outside of an individual test. TestDrive is a PowerShell PSDrive for file activity limited to the scope of a block ( Describe or Context).Ī test may need to work with file operations and validate certain types of file activities. I was thinking about how this testing framework can be useful to improve the ARM Templates deployment. Then I’ll simply run Invoke-Pester as I would do at the. Assertions Pester comes with a suite of assertions that cover a lot of common use cases. Command line output is not the only output option, Pester also integrates with Visual Studio Code, Visual Studio, and any tool that can consume nUnit XML output.
#Pester test 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. Test runner Pester runs your tests and prints a nicely formatted output to the screen.
#Pester test code#
To demonstrate this, I’ve taken the code from yesterday’s Active.
![pester test pester test](https://image.slidesharecdn.com/pesterandpsscriptanalyzer-171102120840/95/pester-psscriptanalyser-power-test-your-powershell-with-powershell-future-decoded-2017-8-638.jpg)
This can get a little bit trickier when you start to store your code in script modules (.psm1 files).
#Pester test how to#
Isolating File Operations using the TestDrive Finally, I want to publish the test results I’ll have Pester output as NUnit file. Yesterday, we looked at how to use the Mock and Assert-MockCalled commands in Pester to unit test the logic in your PowerShell code without having any external dependencies.