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import contextlib
from typing import Iterable, Tuple, no_type_check
import pytest
import crc32c
try:
from test.support.interpreters import Interpreter # type: ignore
from test.support.interpreters import create, queues
except ImportError:
pytest.skip("No sub-interpreter support", allow_module_level=True)
@pytest.fixture(name="interpreter")
def interpreter_fixture() -> Iterable[Interpreter]:
interpreter = create()
with contextlib.closing(interpreter):
yield interpreter
def test_crc32c_can_be_loaded(interpreter: Interpreter) -> None:
interpreter.exec("import crc32c")
# all good, no exception raised
@pytest.mark.calculates_crc32c
def test_crc32c_can_run(interpreter: Interpreter) -> None:
queue = queues.create()
VALUE = b"test"
interpreter.prepare_main(queue_id=queue.id, value_in=VALUE)
@no_type_check
def crc32c_in_subinterpreter() -> None:
from test.support.interpreters.queues import Queue # type: ignore
import crc32c
queue = Queue(queue_id)
value_out = crc32c.crc32c(value_in)
queue.put(value_out)
thread = interpreter.call_in_thread(crc32c_in_subinterpreter)
result = queue.get(timeout=5)
thread.join()
assert result == crc32c.crc32c(VALUE)
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