createRequiredDirectories();
        MockJobExecutor mockJobExecutor = new MockJobExecutor();
        suggestJob.jobExecutor(mockJobExecutor);

        mockProcessHelper.setExitValue(0);
        mockProcessHelper.setOutput("Success");

        String result = suggestJob.execute();

        assertNotNull(result);
        assertTrue(mockJobExecutor.hasShutdownListener());
    }

    // Test with jobExecutor set
    @Test
    public void test_execute_withJobExecutor() {
        final List<JobExecutor.ShutdownListener> shutdownListeners = new ArrayList<>();

        JobExecutor mockJobExecutor = new JobExecutor() {
            @Override
            public void addShutdownListener(ShutdownListener listener) {
                shutdownListeners.add(listener);
            }

            @Override