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LUCENE-7652: improve BasePostingsFormatTestCase with a level 2 ghost test

This commit is contained in:
Mike McCandless 2016-11-16 05:18:39 -05:00
parent 6ec68ddbe0
commit 24b5a624bb
1 changed files with 45 additions and 0 deletions
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45
lucene/test-framework/src/java/org/apache/lucene/index/BasePostingsFormatTestCase.java
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@ -40,6 +40,8 @@ import org.apache.lucene.document.StringField;
import org.apache.lucene.document.TextField;
import org.apache.lucene.index.TermsEnum.SeekStatus;
import org.apache.lucene.search.DocIdSetIterator;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.IOContext;
import org.apache.lucene.util.BytesRef;
@ -312,6 +314,49 @@ public abstract class BasePostingsFormatTestCase extends BaseIndexFileFormatTest
dir.close();
}
// tests that level 2 ghost fields still work
public void testLevel2Ghosts() throws Exception {
Directory dir = newDirectory();
Analyzer analyzer = new MockAnalyzer(random());
IndexWriterConfig iwc = newIndexWriterConfig(null);
iwc.setCodec(getCodec());
iwc.setMergePolicy(newLogMergePolicy());
IndexWriter iw = new IndexWriter(dir, iwc);
Document document = new Document();
document.add(new StringField("id", "0", Field.Store.NO));
document.add(new StringField("suggest_field", "apples", Field.Store.NO));
iw.addDocument(document);
// need another document so whole segment isn't deleted
iw.addDocument(new Document());
iw.commit();
document = new Document();
document.add(new StringField("id", "1", Field.Store.NO));
document.add(new StringField("suggest_field2", "apples", Field.Store.NO));
iw.addDocument(document);
iw.commit();
iw.deleteDocuments(new Term("id", "0"));
// first force merge creates a level 1 ghost field
iw.forceMerge(1);
// second force merge creates a level 2 ghost field, causing MultiFields to include "suggest_field" in its iteration, yet a null Terms is returned (no documents have
// this field anymore)
iw.addDocument(new Document());
iw.forceMerge(1);
DirectoryReader reader = DirectoryReader.open(iw);
IndexSearcher indexSearcher = new IndexSearcher(reader);
assertEquals(1, indexSearcher.count(new TermQuery(new Term("id", "1"))));
reader.close();
iw.close();
dir.close();
}
private static class TermFreqs {
long totalTermFreq;
int docFreq;