async def test_write_readline_fail(unused_tcp_port):
sock = TCP("0", unused_tcp_port)
assert not sock.connected()
assert sock.connection_counter == 0
with pytest.raises(ConnectionRefusedError):
await sock.write_readline(IDN_REQ)
assert not sock.connected()
assert sock.in_waiting() == 0
assert sock.connection_counter == 0
def test_socket_creation():
sock = TCP("example.com", 34567)
assert sock.host == "example.com"
assert sock.port == 34567
assert sock.connection_timeout is None
assert sock.timeout is None
assert sock.auto_reconnect
assert not sock.connected()
assert sock.in_waiting() == 0
assert sock.connection_counter == 0