// Test getUpdatedSource method
        String[] text = { "test" };
        String[][] readings = { { "test" } };
        SuggestItem item = new SuggestItem(text, readings, null, 10L, 20L, 1.0f, null, null, null, SuggestItem.Kind.QUERY);

        Map<String, Object> existingSource = new HashMap<>();
        existingSource.put(FieldNames.QUERY_FREQ, 5L);
        existingSource.put(FieldNames.DOC_FREQ, 10L);

    // will result in random eviction behavior.
    int segmentShift = 0;
    int segmentCount = 1;
    while (segmentCount < concurrencyLevel
        && (!evictsBySize() || segmentCount * 20L <= maxWeight)) {
      ++segmentShift;
      segmentCount <<= 1;
    }
    this.segmentShift = 32 - segmentShift;
    segmentMask = segmentCount - 1;

    this.segments = newSegmentArray(segmentCount);