def test_caret_move_behind_top_border():
lines = [['>', 'v'], ['<', '^']]
fld = Field(2, 2, lines)
stk = Stack()
crt = Caret(stk, fld)
crt.set_direction(Up)
crt.move(fld)
assert crt.direction == Up
assert crt.pos == Vec(0, 1)
def test_caret_move():
lines = [['>', 'v'], ['<', '^']]
fld = Field(2, 2, lines)
stk = Stack()
crt = Caret(stk, fld)
crt.set_direction(Right)
crt.move(fld)
crt.read_instruction(fld)
assert crt.direction == Right
assert crt.current_instruction == 'v'
def test_caret_changes_direction():
lines = [['>', 'v'], ['<', '^']]
fld = Field(2, 2, lines)
stk = Stack()
crt = Caret(stk, fld)
crt.set_direction(Down)
assert crt.direction == Down
crt.set_direction(Left)
assert crt.direction == Left
crt.set_direction(Right)
assert crt.direction == Right
crt.set_direction(Up)
assert crt.direction == Up