air = IndexReader.open(aprioriIndex, false);
tir = testIndex.indexReaderFactory();
assertEquals(air.isCurrent(), tir.isCurrent());
assertEquals(air.hasDeletions(), tir.hasDeletions());
assertEquals(air.maxDoc(), tir.maxDoc());
assertEquals(air.numDocs(), tir.numDocs());
assertEquals(air.numDeletedDocs(), tir.numDeletedDocs());
for (int d =0; d<air.maxDoc(); d++) {
assertEquals(air.isDeleted(d), tir.isDeleted(d));