Function test_breakaway_job

tests/debugpy/test_multiproc.py:506–565

(pyfile, target, run)

    sys.platform != "win32", reason="job objects are specific to Windows"
)
def test_breakaway_job(pyfile, target, run):
    @pyfile
    def child():
        import os
        from debuggee import backchannel

        backchannel.send(os.getpid())
        backchannel.receive()
        backchannel.send("ok")

    @pyfile
    def parent():
        import debuggee
        import os
        import subprocess
        import sys

        debuggee.setup()
        argv = [sys.executable, sys.argv[1]]
        env = os.environ.copy()
        pipe_in = open(os.devnull, "r")
        pipe_out = open(os.devnull, "w")
        CREATE_BREAKAWAY_FROM_JOB = 0x01000000
        proc = subprocess.Popen(
            argv,
            env=env,
            stdin=pipe_in,
            stdout=pipe_out,
            stderr=pipe_out,
            creationflags=CREATE_BREAKAWAY_FROM_JOB,
        )
        pipe_in.close()
        pipe_out.close()
        proc.wait()

    with debug.Session() as parent_session:
        parent_session.config.update(
            {
                "redirectOutput": False,
                "subProcess": False,
            }
        )
        parent_session.expected_exit_code = some.int
        backchannel = parent_session.open_backchannel()

        with run(parent_session, target(parent, args=[child])):
            pass

        child_pid = backchannel.receive()
        child_process = psutil.Process(child_pid)

        parent_session.request("terminate")
        parent_session.wait_for_exit()

        # child should still be running
        backchannel.send("proceed")
        assert backchannel.receive() == "ok"