Long test path + name is too long for file system

[dooferlad]

Bug Report

Current Behavior A clear and concise description of the behavior.
Some tests cause OSError: [Errno 36] File name too long because the test path and test name is too long for the file system to support.

Input Code
Just create a test in a sufficiently long test path.

Expected behavior/code A clear and concise description of what you expected to
happen (or code).
Test to Just Work(tm).

Environment

• Python(s): [e.g. python3.8, python3.9, ...]
  Python 3.11 on ext4.

Possible Solution

Change path generation code to not substitute os.sep for - and create the full directory hierarchy. I use a short value for --memray-bin-path and this change to the plugin:

        def _build_bin_path() -> Path:
            if self._tmp_dir is None and not os.getenv("MEMRAY_RESULT_PATH"):
                of_id = pyfuncitem.nodeid.replace("::", "-")
                name = f"{self._bin_prefix}/{of_id}.bin"
            else:
                name = f"{uuid.uuid4().hex}.bin"

            result_file = self.result_path / name
            result_file.parent.mkdir(parents=True, exist_ok=True)
            if self._tmp_dir is None and result_file.exists():
                result_file.unlink()
            return result_file

This works in my case because the path is long, but the actual file name is short enough for the file system to support.