Test cases for twisted.protocols package.
| Class | WireTests | Test wire protocols. |
| Class | TestableProxyClientFactory | Test proxy client factory that keeps the last created protocol instance. |
| Class | TestableProxyFactory | Test proxy factory that keeps the last created protocol instance. |
| Class | PortforwardingTests | Test port forwarding. |
| Class | StringTransportTests | Test proto_helpers.StringTransport
helper behaviour. |