pquentin commented on a change in pull request #445:
URL: https://github.com/apache/lucene/pull/445#discussion_r751102338
##########
File path:
lucene/core/src/test/org/apache/lucene/search/TestDocValuesFieldExistsQuery.java
##########
@@ -206,6 +210,42 @@ public void testFieldExistsButNoDocsHaveField() throws
IOException {
dir.close();
}
+ public void testQueryMatchesCount() throws IOException {
+ Directory dir = newDirectory();
+ RandomIndexWriter w = new RandomIndexWriter(random(), dir);
+
+ int randomNumDocs = TestUtil.nextInt(random(), 10, 100);
+ int numMatchingDocs = 0;
+
+ for (int i = 0; i < randomNumDocs; i++) {
+ Document doc = new Document();
+ if (random().nextBoolean()) {
+ doc.add(new NumericDocValuesField("f", i));
+ doc.add(new LongPoint("f", i));
+ numMatchingDocs++;
+ }
+ w.addDocument(doc);
+ }
+ w.forceMerge(1);
+
+ DirectoryReader reader = w.getReader();
+ final IndexSearcher searcher = new IndexSearcher(reader);
+
+ Query testQuery = new DocValuesFieldExistsQuery("f");
+ assertEquals(searcher.count(testQuery), numMatchingDocs);
+ final Weight weight = searcher.createWeight(testQuery, ScoreMode.COMPLETE,
1);
+ assertEquals(weight.count(reader.leaves().get(0)), numMatchingDocs);
+
+ // Test that we can't count in O(1) when there are deleted documents
+ w.deleteDocuments(LongPoint.newRangeQuery("f", 0L, 10L));
+ w.commit();
Review comment:
Thanks, fixed.
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