private MockServletContext mockServletContext;
    private MockProcessHelper mockProcessHelper;
    private MockFessConfig mockFessConfig;
    private MockSystemHelper mockSystemHelper;
    private MockPopularWordHelper mockPopularWordHelper;
    private File tempDir;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);

        // Create temp directory for testing first