public void testTotalGroupCount() throws Exception {
final String groupField = "author";
FieldType customType = new FieldType();
customType.setStored(true);
Directory dir = newDirectory();
RandomIndexWriter w =
new RandomIndexWriter(
random(),
dir,
newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()))
.setMergePolicy(newLogMergePolicy()));
boolean canUseIDV = !"Lucene3x".equals(w.w.getConfig().getCodec().getName());
// 0
Document doc = new Document();
addGroupField(doc, groupField, "author1", canUseIDV);
doc.add(new Field("content", "random text", TextField.TYPE_STORED));
doc.add(new Field("id", "1", customType));
w.addDocument(doc);
// 1
doc = new Document();
addGroupField(doc, groupField, "author1", canUseIDV);
doc.add(new Field("content", "some more random text blob", TextField.TYPE_STORED));
doc.add(new Field("id", "2", customType));
w.addDocument(doc);
// 2
doc = new Document();
addGroupField(doc, groupField, "author1", canUseIDV);
doc.add(new Field("content", "some more random textual data", TextField.TYPE_STORED));
doc.add(new Field("id", "3", customType));
w.addDocument(doc);
w.commit(); // To ensure a second segment
// 3
doc = new Document();
addGroupField(doc, groupField, "author2", canUseIDV);
doc.add(new Field("content", "some random text", TextField.TYPE_STORED));
doc.add(new Field("id", "4", customType));
w.addDocument(doc);
// 4
doc = new Document();
addGroupField(doc, groupField, "author3", canUseIDV);
doc.add(new Field("content", "some more random text", TextField.TYPE_STORED));
doc.add(new Field("id", "5", customType));
w.addDocument(doc);
// 5
doc = new Document();
addGroupField(doc, groupField, "author3", canUseIDV);
doc.add(new Field("content", "random blob", TextField.TYPE_STORED));
doc.add(new Field("id", "6", customType));
w.addDocument(doc);
// 6 -- no author field
doc = new Document();
doc.add(new Field("content", "random word stuck in alot of other text", TextField.TYPE_STORED));
doc.add(new Field("id", "6", customType));
w.addDocument(doc);
IndexSearcher indexSearcher = new IndexSearcher(w.getReader());
w.close();
AbstractAllGroupsCollector<?> allGroupsCollector = createRandomCollector(groupField, canUseIDV);
indexSearcher.search(new TermQuery(new Term("content", "random")), allGroupsCollector);
assertEquals(4, allGroupsCollector.getGroupCount());
allGroupsCollector = createRandomCollector(groupField, canUseIDV);
indexSearcher.search(new TermQuery(new Term("content", "some")), allGroupsCollector);
assertEquals(3, allGroupsCollector.getGroupCount());
allGroupsCollector = createRandomCollector(groupField, canUseIDV);
indexSearcher.search(new TermQuery(new Term("content", "blob")), allGroupsCollector);
assertEquals(2, allGroupsCollector.getGroupCount());
indexSearcher.getIndexReader().close();
dir.close();
}
