Simple test cs code to test passing/failure - compile with csc simpletest.cs, run with mono simpletest.exe

simpletest.cs

using System;
using System.Diagnostics;

public class simpletest
{
    static public void Main ()
    {
        // start with working situation
        var psi = new ProcessStartInfo() {
            FileName = "/usr/bin/7z",
            Arguments = "a bob.7z simpletest.cs",
            UseShellExecute = false
        };
        Console.WriteLine(">>> I expect this to work <<<");
        var proc = new Process() { StartInfo = psi, };
        proc.Start();
        proc.WaitForExit();

        Console.WriteLine(">>> I expect this to work <<<");
        psi.UseShellExecute = true;
        proc = new Process() { StartInfo = psi, };
        proc.Start();
        proc.WaitForExit();

        Console.WriteLine(">>> I expect this to fail with the missing process error <<<");
        psi.FileName = "/usr/bin/7zz";
        psi.UseShellExecute = false;
        proc = new Process() { StartInfo = psi, };
        try {
            proc.Start();
            proc.WaitForExit();
        } catch (System.ComponentModel.Win32Exception ex) {
            Console.WriteLine(ex);
        }

        Console.WriteLine(">>> I expect this to fail with the xdg-open error <<<");
        psi.UseShellExecute = true;
        proc = new Process() { StartInfo = psi, };
        proc.Start();
        proc.WaitForExit();
    }
}