Testing dynamic where in PowerShell

test.ps1

$Test = [PSCustomObject] @{
    FirstName    = 'Stefan'
    LastName = 'Stranger'
    #"Difffrent parametr" = 'ok'
}

function Get-WhereObject {
    [cmdletBinding()]
    param(
        [Parameter(Mandatory, Position = 0, ValueFromPipeline)][PSCustomObject] $Test
    )
    [string] $Output = @(
        $Count = 0
        foreach ($Name in $Test.PSObject.Properties.Name) {
            $Count++
            "`$_." + "'$Name' -eq '$($Test.($Name))'"
            if ($Count -lt $Test.PSObject.Properties.Name.Count) {
                " -and "
            }
        }
    )
    $Output
}


$Test | Get-WhereObject -OutVariable foo

Function Get-Example {

    [CmdletBinding()]
    param(
        [parameter()][String]$FirstName,
        [parameter()][String]$LastName
    )

    process {
        return [PSCustomObject]@{
            FirstName = $FirstName
            LastName = $LastName
        }
    }
}

# Does not works
Get-Example -FirstName 'Stefan' -LastName 'Stranger' | Where-Object $([scriptblock]::Create($foo))