Method runpytest_subprocess

src/_pytest/pytester.py:1491–1521

Run pytest as a subprocess with given arguments. Any plugins added to the :py:attr:`plugins` list will be added using the ``-p`` command line option. Additionally ``--basetemp`` is used to put any temporary files and directories in a numbered directory prefixed with

(
        self, *args: str | os.PathLike[str], timeout: float | None = None
    )

        return self.run(sys.executable, "-c", command)

    def runpytest_subprocess(
        self, *args: str | os.PathLike[str], timeout: float | None = None
    ) -> RunResult:
        """Run pytest as a subprocess with given arguments.

        Any plugins added to the :py:attr:`plugins` list will be added using the
        ``-p`` command line option.  Additionally ``--basetemp`` is used to put
        any temporary files and directories in a numbered directory prefixed
        with "runpytest-" to not conflict with the normal numbered pytest
        location for temporary files and directories.

        :param args:
            The sequence of arguments to pass to the pytest subprocess.
        :param timeout:
            The period in seconds after which to timeout and raise
            :py:class:`Pytester.TimeoutExpired`.
        :returns:
            The result.
        """
        __tracebackhide__ = True
        p = make_numbered_dir(root=self.path, prefix="runpytest-", mode=0o700)
        args = (f"--basetemp={p}", *args)
        for plugin in self.plugins:
            if not isinstance(plugin, str):
                raise ValueError(
                    f"Specifying plugins as objects is not supported in pytester subprocess mode; "
                    f"specify by name instead: {plugin}"
                )
            args = ("-p", plugin, *args)
        args = self._getpytestargs() + args
        return self.run(*args, timeout=timeout)

    def spawn_pytest(self, string: str, expect_timeout: float = 10.0) -> pexpect.spawn:
        """Run pytest using pexpect.