public void Setup()
{
transportObj = new GameObject();
transport = transportObj.AddComponent <AsyncFallbackTransport>();
// this gives warnings, it is ok
transport1 = Substitute.For <AsyncTransport>();
transport2 = Substitute.For <AsyncTransport>();
transport.transports = new[] { transport1, transport2 };
conn1 = Substitute.For <IConnection>();
conn2 = Substitute.For <IConnection>();
}