* Add Remove-Alias Command. Add Remove-Alias Test. Add Remove-Alias to .psd1. * Fix code-formatting. Fix ErrorAction on Remove-Alias instead of preference variable. Remove unnecessary Get-Alias calls. Switch Force parameter to auto property. Add ValueFromPipeline to Remove-Alias Name parameter. * Remove empty lines. Add Remove-Alias to Unix Module .psd1. Add Remove-Alias to approved Commands test. Remove Try/Catch for SessionstateException. Add WriteError for aliasnotfound exception. * Add ErrorAction Stop to all Get-Alias and Set-Alias Cmdlets in all tests for consistency. Add Should BeNullOrEmpty to "should throw if alias does not exist" test to verify that foo alias really is not there before removing it. * Changed Remove-Alias parameter Name to String-Array. Changed Cmdlet Process Logic to work with String Array. Added Alias named "ral". Added test case for Alias "ral". Added "ral" Alias to list of approved Aliases. Replaced foo and bar values in all tests with better names. * Remove "ral"-alias test as this is covered in DefaultCommands.Tests.ps1. Add test for removing multiple alias at once. Fix wrong curly braces positioning. * Remove $FullCLR in DefaultCommands.Tests.ps1 for Remove-Alias and "ral" alias. * Add Alias "ral" to Remove-Alias Cmdlet. * Remove "ral" alias as this is handled by using the [Alias()] attribute on the Remove-Alias Cmdlet. * Replace alias names used in Remove-Alias Cmdlet tests with GUIDs to avoid collisions
Pester Testing Test Guide
Also see the Writing Pester Tests document.
Running Pester Tests
Go to the top level of the PowerShell repository and run: Start-PSPester
inside a self-hosted copy of PowerShell.
You can use Start-PSPester -Tests SomeTestSuite* to limit the tests run.
Testing new powershell processes
Any launch of a new powershell process must include -noprofile so that
modified user and system profiles do not causes tests to fail. You also must
take care to call the development copy of PowerShell, which is not the first
one on the path.
Example:
$powershell = Join-Path -Path $PsHome -ChildPath "pwsh"
& $powershell -noprofile -command "ExampleCommand" | Should Be "ExampleOutput"
Portability
Some tests simply must be tied to certain platforms. Use Pester's
-Skip directive on an It statement to do this. For instance to run
the test only on Windows:
It "Should do something on Windows" -Skip:($IsLinux -Or $IsMacOS) { ... }
Or only on Linux and OS X:
It "Should do something on Linux" -Skip:$IsWindows { ... }
Pending
When writing a test that should pass, but does not, please do not skip or delete
the test, but use It "Should Pass" -Pending to mark the test as pending, and
file an issue on GitHub.