Private/Get-PoshspecParam.ps1
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<#
.SYNOPSIS Returns an object which is used with Invoke-PoshspecExpression to execute a Pester 'It' block with the generated name and test expression values. .EXAMPLE Get-PoshspecParam -TestName File -TestExpression {'C:\Temp'} -Target 'C:\Temp' -Should { Should -Exist } Name : File 'C:\Temp' Should -Exist Expression : 'C:\Temp' | Should -Exist #> function Get-PoshspecParam { [CmdletBinding(DefaultParameterSetName = "Default")] param( [Parameter(Mandatory, ParameterSetName = "Default")] [Parameter(Mandatory, ParameterSetName = "PropertyExpression")] [string] $TestName, [Parameter(Mandatory, ParameterSetName = "Default")] [Parameter(Mandatory, ParameterSetName = "PropertyExpression")] [string] $TestExpression, [Parameter(Mandatory, ParameterSetName = "Default")] [Parameter(Mandatory, ParameterSetName = "PropertyExpression")] [string] $Target, [Parameter(ParameterSetName = "Default")] [string] $FriendlyName, [Parameter(ParameterSetName = "Default")] [string] $Property, [Parameter(Mandatory, ParameterSetName = "PropertyExpression")] [string] $PropertyExpression, [Parameter(ParameterSetName = "Default")] [Parameter(ParameterSetName = "PropertyExpression")] [string] $Qualifier, [Parameter(Mandatory, ParameterSetName = "Default")] [Parameter(Mandatory, ParameterSetName = "PropertyExpression")] [scriptblock] $Should ) $assertion = $Should.ToString().Trim() $expressionString = $TestExpression.ToString().Trim() $PropertyExpression = $PropertyExpression.ToString().Trim() if ($PSBoundParameters.ContainsKey("PropertyExpression")) { $expressionString = $ExecutionContext.InvokeCommand.ExpandString($expressionString) $expressionString = Expand-PoshspecTestExpression $expressionString $PropertyExpression if ($PropertyExpression -like '*.*') { $lastIndexOfPeriod = $PropertyExpression.LastIndexOf('.') $Qualifier = $PropertyExpression.substring(0, $lastIndexOfPeriod) $NewProperty = $PropertyExpression.substring($lastIndexOfPeriod + 1) $nameString = "{0} property '{1}' for '{2}' at '{3}' {4}" -f $TestName, $NewProperty, $Target, $Qualifier, $assertion } else { $nameString = "{0} property '{1}' for '{2}' {3}" -f $TestName, $PropertyExpression, $Target, $assertion } $expressionString += " | $assertion" Write-Output -InputObject ([PSCustomObject]@{Name = $nameString; Expression = $expressionString}) } else { if (-not $PSBoundParameters.ContainsKey("FriendlyName")) { $FriendlyName = $Target } $expressionString = $TestExpression.ToString().Trim() if ($PSBoundParameters.ContainsKey("Property")) { $expressionString += " | Select-Object -ExpandProperty '$Property'" if ($PSBoundParameters.ContainsKey("Qualifier")) { $nameString = "{0} property '{1}' for '{2}' at '{3}' {4}" -f $TestName, $Property, $FriendlyName, $Qualifier, $assertion } else { $nameString = "{0} property '{1}' for '{2}' {3}" -f $TestName, $Property, $FriendlyName, $assertion } } else { $nameString = "{0} '{1}' {2}" -f $TestName, $FriendlyName, $assertion } $expressionString += " | $assertion" $expressionString = $ExecutionContext.InvokeCommand.ExpandString($expressionString) Write-Output -InputObject ([PSCustomObject]@{ Name = $nameString Expression = $expressionString }) } } |