Base class for WinAppDriver based UI tests

AutomatedWizardTestingBase.cs

    public class AutomatedWizardTestingBase : IDisposable
    {
        protected WindowsDriver<WindowsElement> AppSession { get; private set; }

        protected AutomatedWizardTestingBase()
        {
            CheckWinAppDriverInstalled();
            StartWinAppDriverIfNotRunning();
        }

        public void Dispose()
        {
            AppSession?.Dispose();

            StopWinAppDriverIfRunning();
        }

        private void CheckWinAppDriverInstalled()
        {
            // Assume default install location. adjust as appropriate
            Assert.True(
                File.Exists(@"C:\Program Files (x86)\Windows Application Driver\WinAppDriver.exe"),
                "WinAppDriver is not installed. Download from https://github.com/Microsoft/WinAppDriver/releases");
        }

        private void StartWinAppDriverIfNotRunning()
        {
            var script = @"
$wad = Get-Process WinAppDriver -ErrorAction SilentlyContinue

if ($wad -eq $Null)
{
    Start-Process ""C:\Program Files (x86)\Windows Application Driver\WinAppDriver.exe""
}";

            ExecutePowerShellScript(script);
        }

        private void StopWinAppDriverIfRunning()
        {
            var script = @"
$wad = Get-Process WinAppDriver -ErrorAction SilentlyContinue

if ($wad -ne $null)
{
    $wad.CloseMainWindow()
}";

            ExecutePowerShellScript(script);
        }

        private Collection<PSObject> ExecutePowerShellScript(string script)
        {
            using (var ps = System.Management.Automation.PowerShell.Create())
            {
                ps.AddScript(script);

                Collection<PSObject> psOutput = ps.Invoke();

                if (ps.Streams.Error.Count > 0)
                {
                    foreach (var errorRecord in ps.Streams.Error)
                    {
                        Debug.WriteLine(errorRecord.ToString());
                    }
                }

                return psOutput;
            }
        }
    }