param (
    [String]$Input_1
)

function Info([String]$s) {
    if ([String]::IsNullOrWhiteSpace($s)) {
        return 1
    }
    if ($s -eq '?' -or $s -eq 'help') {
        return 2
    }
    if ($s -eq '--help' -or $s -eq '--h') {
        return 3
    }
    if ($s -eq "-h") {
        return 4
    }
}

switch(Info($Input_1)) {
    { $_ -eq 1 } {Write-Output "[ps-test] Usage: ps-test ... Variant 1"; Exit}
    { $_ -eq 2 } {Write-Output "[ps-test] Usage: ps-test ... Variant 2"; Exit}
    { $_ -eq 3 } {Write-Output "[ps-test] Usage: ps-test ... Variant 3"; Exit}
    { $_ -eq 4 } {Write-Output "[ps-test] Usage: ps-test ... Variant 4"; Exit}
}