public void PrependReturnsUpdatedInstance()
{
// Fixture setup
var dn = new DN(new Rdn(NamingAttribute.Ou, new LdapName("Users")));
// Exercise system
dn = dn.Prepend(new Rdn(NamingAttribute.Cn, new LdapName("John Doe")));
// Verify outcome
dn.ToString().Should().Be("CN=John Doe,OU=Users");
}