assertEquals(200L, item.getQueryFreq());

        // Test document frequency
        item.setDocFreq(150L);
        assertEquals(150L, item.getDocFreq());

        // Test user boost
        item.setUserBoost(2.0f);
        assertEquals(2.0f, item.getUserBoost(), 0.001f);

        // Test readings
        String[][] newReadings = { { "read1", "read2" }, { "read3" } };
        item.setReadings(newReadings);