C#

private void OpenRunspace(string username, string password, ref Runspace remoteRunspace)
        {
            // Convert plain text password to secure string
            SecureString pass = new SecureString();
            foreach (char c in password.ToCharArray())
            {
                pass.AppendChar(c);
            }

            PSCredential psc = new PSCredential(username, pass);
            WSManConnectionInfo wmci = new WSManConnectionInfo(new Uri("http://" + ConfigurationManager.AppSettings["ExchangeServer"] + "/powershell"), "http://schemas.microsoft.com/powershell/Microsoft.Exchange", psc);
            wmci.AuthenticationMechanism = AuthenticationMechanism.Kerberos;
            wmci.ProxyAuthentication = AuthenticationMechanism.Negotiate;

            wmci.SkipCACheck = true;
            wmci.SkipCNCheck = true;
            remoteRunspace = RunspaceFactory.CreateRunspace(wmci);
        }

[SetUp]
public void init()
{
    Person person = new Person();
}

public void foo()
{...}