Public/Package.ps1
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<#
.SYNOPSIS Test for installed package. .DESCRIPTION Test that a specified package is installed. .PARAMETER Target Specifies the Display Name of the package to search for. .PARAMETER Property Specifies an optional property to test for on the package. .PARAMETER Should A Script Block defining a Pester Assertion. .EXAMPLE package 'Microsoft Visual Studio Code' { should not BeNullOrEmpty } .EXAMPLE package 'Microsoft Visual Studio Code' version { should be '1.1.0' } .EXAMPLE package 'NonExistentPackage' { should BeNullOrEmpty } .NOTES Assertions: Be, BeNullOrEmpty #> function Package { [CmdletBinding(DefaultParameterSetName="Default")] param( [Parameter(Mandatory, Position=1,ParameterSetName="Default")] [Parameter(Mandatory, Position=1,ParameterSetName="Property")] [Alias('Name')] [string]$Target, [Parameter(Position=2,ParameterSetName="Property")] [string]$Property, [Parameter(Mandatory, Position=2,ParameterSetName="Default")] [Parameter(Mandatory, Position=3,ParameterSetName="Property")] [scriptblock]$Should ) $expression = {Get-Package -Name '$Target' -ErrorAction SilentlyContinue} $params = Get-PoshspecParam -TestName Package -TestExpression $expression @PSBoundParameters Invoke-PoshspecExpression @params } |