t.Errorf("test[%d]: expected error to contain %q but it was %q", i, test.errorSubstring, serverErr)
			}
		}
	}
}

func TestCloseServerConnectionOnIdleClient(t *testing.T) {
	clientConn, serverConn := localPipe(t)
	server := Server(serverConn, testConfig.Clone())
	go func() {
		clientConn.Write([]byte{'0'})
		server.Close()
	}()