def test_default_tape_length(self, finite_tape: FiniteTape) -> None:
finite_tape.shift_right(29_999)
with pytest.raises(OutOfBoundsError) as exc_info:
finite_tape.shift_right(1)
assert "Pointer is out of tape bounds" in str(exc_info.value)
def test_out_of_right_bound_error_do_not_change_tape_state(
self, finite_tape: FiniteTape) -> None:
finite_tape.set(1)
with pytest.raises(OutOfBoundsError):
finite_tape.shift_right(10)
assert finite_tape.get() == 1
def _create_machine() -> Machine:
return MachineImpl(
LexerImpl(),
ParserImpl(),
TranslatorImpl(),
InterpreterImpl(FiniteTape()),
)
def machine() -> Machine:
lexer = LexerImpl()
parser = ParserImpl()
translator = TranslatorImpl()
interpreter = InterpreterImpl(FiniteTape())
return MachineImpl(lexer, parser, translator, interpreter)
def repl() -> Repl:
return ReplImpl(
MachineImpl(
LexerImpl(),
ParserImpl(),
TranslatorImpl(),
InterpreterImpl(FiniteTape()),
), )
def repl() -> None:
"""Run brainfuck REPL."""
ReplImpl(
MachineImpl(
LexerImpl(),
ParserImpl(),
TranslatorImpl(),
InterpreterImpl(FiniteTape()),
)
).run(sys.stdin, sys.stdout)
def finite_tape(request: SubRequest) -> Tape:
marker: t.Optional[Mark] = request.node.get_closest_marker("finite_tape_length")
finite_tape_length = marker.args[0] if marker is not None else None
return FiniteTape(finite_tape_length)
import typing as t
import pytest
from _pytest.fixtures import SubRequest
from _pytest.mark import Mark
from bfpy.core.interpreter.tape import Tape, FiniteTape
@pytest.fixture
def finite_tape(request: SubRequest) -> Tape:
marker: t.Optional[Mark] = request.node.get_closest_marker("finite_tape_length")
finite_tape_length = marker.args[0] if marker is not None else None
return FiniteTape(finite_tape_length)
@pytest.fixture(params=[FiniteTape()])
def tape(request: SubRequest) -> Tape:
return t.cast(Tape, request.param)
def test_out_of_left_bound(self, finite_tape: FiniteTape,
steps: int) -> None:
with pytest.raises(OutOfBoundsError) as exc_info:
finite_tape.shift_left(steps)
assert "Pointer is out of tape bounds" in str(exc_info.value)
def test_can_not_create_finite_tape_with_invalid_length(
self, tape_length: int) -> None:
with pytest.raises(ValueError) as exc_info:
FiniteTape(tape_length)
assert str(exc_info.value) == "Length of finite tape should be >= 0"
def interpreter() -> Interpreter:
return InterpreterImpl(FiniteTape())