Function _idle_fork_script

tests/test_read_write_fork.py:816–852

()

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

        import os
        import sys

        from filelock import ReadWriteLock

        lock_path = sys.argv[1]
        inherited_lock = ReadWriteLock(lock_path, is_singleton=False)
        child_pid = os.fork()
        if child_pid == 0:
            try:
                inherited_lock.acquire_read()
            except RuntimeError as error:
                assert "was invalidated by fork()" in str(error)
            else:
                raise AssertionError("inherited idle lock acquired")
            if sys.implementation.name == "pypy":
                try:
                    ReadWriteLock(lock_path, is_singleton=False)
                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 opened SQLite after fork")
            else:
                with ReadWriteLock(lock_path, is_singleton=False).write_lock():
                    pass
            sys.exit(0)
        _, status = os.waitpid(child_pid, 0)
        assert os.waitstatus_to_exitcode(status) == 0
        """
    )


def _pypy_fork_script() -> str:  # pragma: pypy cover