def main():
"""Run Mr Robot, run!
Simulate a robot interactively."""
robot = Robot()
for line in fileinput.input():
try:
(cmd, coords) = parse(line)
if cmd == 'PLACE':
robot.place(coords)
else:
# Assume Robot has a method for each valid command.
# (A potential weak point, but this is covered sufficiently by
# the command_pattern testing)
getattr(robot, cmd.lower())()
except InvalidCommand:
# Silently ignore invalid commands
pass
def test_bad_y_value(self):
with pytest.raises(InvalidCommand):
(cmd, args) = parse('PLACE 0,b,NORTH\n')
def test_valid_place_cmd(self):
(cmd, args) = parse('PLACE 1,2,NORTH\n')
assert cmd == 'PLACE'
assert args['x'] == 1
assert args['y'] == 2
assert args['f'] == 'NORTH'
def test_missing_coordinates(self):
with pytest.raises(InvalidCommand):
(cmd, args) = parse('PLACE\n')
def test_bad_facing_value(self):
with pytest.raises(InvalidCommand):
(cmd, args) = parse('PLACE 0,0,DOWN\n')
def test_invalid_cmd(self):
with pytest.raises(InvalidCommand):
(cmd, args) = parse('BAD ROBOT\n')
def test_valid_report_cmd(self):
(cmd, args) = parse('REPORT\n')
assert cmd == 'REPORT'
assert args is None
def test_valid_right_cmd(self):
(cmd, args) = parse('RIGHT\n')
assert cmd == 'RIGHT'
assert args is None
def test_valid_left_cmd(self):
(cmd, args) = parse('LEFT\n')
assert cmd == 'LEFT'
assert args is None
def test_valid_move_cmd(self):
(cmd, args) = parse('MOVE\n')
assert cmd == 'MOVE'
assert args is None