Should Be NullOrEmpty

output.txt

We are comparing if two values are equal so
when $Expected is string with value 'NullOrEmpty'
and $Actual is $null then the result is:
False


We are comparing if two values are equal so
when $Expected is string with value 'NullOrEmpty'
and Actual is string with value 'NullOrEmpty' then the result is:
True

Should-Be.ps1

function Should-Be {
    param($Expected,[Parameter(ValueFromPipeline)]$Actual) 
    "We are comparing if two values are equal so"
    "when `$Expected is $($Expected.GetType()) with value '$Expected'"
    
    if ($null -eq $Actual) 
    {
        "and `$Actual is `$null then the result is:"
    }
    else 
    {
        "and Actual is $($Actual.GetType()) with value '$Actual' then the result is:"
    }
    $Expected -Eq $Actual 
    "`n"
}

$null | Should-Be NullOrEmpty
"NullOrEmpty" | Should-Be NullOrEmpty