Function _subclass_fork_script

tests/test_read_write_fork.py:907–942

()

def _subclass_fork_script() -> str:
    return textwrap.dedent(
        """
        from __future__ import annotations

        import os
        import sys

        from filelock import ReadWriteLock

        class DerivedReadWriteLock(ReadWriteLock):
            pass

        lock_path = sys.argv[1]
        inherited_lock = DerivedReadWriteLock(lock_path)
        child_pid = os.fork()
        if child_pid == 0:
            if sys.implementation.name == "pypy":
                try:
                    DerivedReadWriteLock(lock_path)
                except RuntimeError as error:
                    assert str(error) == (
                        "ReadWriteLock is unavailable in a PyPy fork child; exec or exit before using it"
                    )
                else:
                    raise AssertionError("PyPy child constructed a lock after fork")
            else:
                child_lock = DerivedReadWriteLock(lock_path)
                assert child_lock is not inherited_lock
                with child_lock.read_lock():
                    pass
            sys.exit(0)
        _, status = os.waitpid(child_pid, 0)
        assert os.waitstatus_to_exitcode(status) == 0
        """
    )


def _async_fork_script() -> str: