20         merging_iterator_(nullptr),  in MergerTest()
35     auto a = merging_iterator_.get();  in AssertEquivalence()
53     merging_iterator_->Seek(target);  in Seek()
58     merging_iterator_->SeekToFirst();  in SeekToFirst()
63     merging_iterator_->SeekToLast();  in SeekToLast()
68     for (int i = 0; i < times && merging_iterator_->Valid(); ++i) {  in Next()
70       merging_iterator_->Next();  in Next()
77     for (int i = 0; i < times && merging_iterator_->Valid(); ++i) {  in Prev()
79       merging_iterator_->Prev();  in Prev()
86     for (int i = 0; i < times && merging_iterator_->Valid(); ++i) {  in NextAndPrev()
89         merging_iterator_->Prev();  in NextAndPrev()
92         merging_iterator_->Next();  in NextAndPrev()
108     merging_iterator_.reset(  in Generate()
116   std::unique_ptr<InternalIterator> merging_iterator_;  member in ROCKSDB_NAMESPACE::MergerTest