options.name = "test-name";
        options.propertiesPath = "/path/to/props";
        options.numOfThreads = 5;

        String expected = "Options [sessionId=test-session, name=test-name, propertiesPath=/path/to/props, numOfThreads=5]";
        assertEquals(expected, options.toString());
    }

    public void test_initializeProbes() {
        // Test that initializeProbes doesn't throw exception

        protected String propertiesPath;

        /**
         * Number of threads to use for thumbnail generation.
         */
        @Option(name = "-t", aliases = "--numOfThreads", metaVar = "numOfThreads", usage = "The number of threads")
        protected int numOfThreads = 1;

        /**
         * Whether to run in cleanup mode to remove old thumbnails.
         */

    }

    // Test numOfThreads setter
    public void test_numOfThreads() {
        assertEquals(1, thumbnailJob.numOfThreads);

        GenerateThumbnailJob result = thumbnailJob.numOfThreads(4);

        assertSame(thumbnailJob, result);
        assertEquals(4, thumbnailJob.numOfThreads);
    }

    // Test cleanup setter
    public void test_cleanup() {