processHelper.destroyProcess(sessionId);
        } catch (Exception e) {
            fail("Unexpected exception: " + e.getMessage());
        }
    }

    public void test_startProcess_withBufferSizeAndCallback() {
        String sessionId = "test_session_buffer";
        List<String> cmdList = Arrays.asList("echo", "hello world");
        Consumer<ProcessBuilder> pbCall = pb -> {