def should_start_and_stop_without_crashing():
receiver = Receiver()
#
engine = Engine(mtu=MTU)
rail_line_console = RailLineConsole()
rail_h = 'test/line_console'
rail_line_console.zero(
rail_h=rail_h,
cb_line_console_connect=receiver.on_line_console_connect,
cb_line_console_condrop=receiver.on_line_console_condrop,
cb_line_console_command=receiver.on_line_console_command,
engine=engine)
engine.cycle()
#
# Stage: Start it
rail_line_console.start(ip='localhost', port=5000)
#
# Verify
engine.cycle()
assert rail_line_console.is_server_listening() == True
assert rail_line_console.is_accept_connected() == False
#
# Stage: Stop it
rail_line_console.stop()
#
# Verify
engine.cycle()
assert rail_line_console.is_server_listening() == False
assert rail_line_console.is_accept_connected() == False
#
return True
def should_accept_client_and_boot_client_on_stop():
ip = 'localhost'
port = 5000
#
engine = Engine(mtu=MTU)
receiver = Receiver()
#
# step: start
rail_line_console = RailLineConsole()
rail_h = 'test/line_console'
rail_line_console.zero(
rail_h=rail_h,
cb_line_console_connect=receiver.on_line_console_connect,
cb_line_console_condrop=receiver.on_line_console_condrop,
cb_line_console_command=receiver.on_line_console_command,
engine=engine)
rail_line_console.start(ip=ip, port=port)
#
# verify
engine.cycle()
assert rail_line_console.is_server_listening() == True
assert rail_line_console.is_accept_connected() == False
#
# step: client connects
client = engine.init_spin(construct=SpinBasicTcpClient)
client.start(addr=ip, port=port)
#
# verify
engine.cycle()
assert rail_line_console.is_server_listening() == False
assert rail_line_console.is_accept_connected() == True
assert client.is_connected() == True
#
# step: server is stopped with client attached
rail_line_console.stop()
#
# confirm effects
engine.cycle()
assert rail_line_console.is_server_listening() == False
assert rail_line_console.is_accept_connected() == False
assert client.is_connected() == False
#
return True
def should_transfer_of_text():
ip = 'localhost'
port = 5000
#
engine = Engine(mtu=MTU)
receiver = Receiver()
#
# step: start it
rail_line_console = RailLineConsole()
rail_h = 'test/line_console'
rail_line_console.zero(
rail_h=rail_h,
cb_line_console_connect=receiver.on_line_console_connect,
cb_line_console_condrop=receiver.on_line_console_condrop,
cb_line_console_command=receiver.on_line_console_command,
engine=engine)
rail_line_console.start(ip=ip, port=port)
#
# verify
engine.cycle()
assert rail_line_console.is_server_listening() == True
assert rail_line_console.is_accept_connected() == False
#
# step: client connects
client = engine.init_spin(construct=SpinBasicTcpClient)
client.start(addr=ip, port=port)
#
# verify
engine.cycle()
assert rail_line_console.is_server_listening() == False
assert rail_line_console.is_accept_connected() == True
assert client.is_connected() == True
#
# step: client sends text that does not have a newline
client.send(msg="abc def") # emphasis: no newline
#
# verify: we should not have received a line
engine.cycle()
assert 0 == len(receiver.sb)
#
# step: now send a new line and some overflow
client.send(msg="\noverflow")
client.send(msg="/second half")
#
# verify: we should have seen our first line
engine.cycle()
assert 1 == len(receiver.sb)
assert receiver.sb[0] == ['abc', 'def']
#
# step: another line ending
client.send(msg='\n')
#
# verify
engine.cycle()
assert 2 == len(receiver.sb)
assert receiver.sb[-1] == ['overflow/second', 'half']
#
# step: multiple lines in one pass
client.send(msg="three\nfour\n")
#
# verify
engine.cycle()
assert 4 == len(receiver.sb)
assert receiver.sb[-2] == [
'three',
]
assert receiver.sb[-1] == [
'four',
]
#
# step: we write to client
s = "here is some text\n"
rail_line_console.send(msg=s)
#
# verify
engine.cycle()
assert 1 == len(client.sb)
assert client.sb[-1] == s
#
return True
