@Parameterized.Parameters(name = "{0} bits")
public static List<Object[]> formats() {
ArrayList<Object[]> parameters = new ArrayList<>();
for (BitmapDocumentFormat format : BitmapDocumentFormat.values()) {
parameters.add(new Object[] {format});
}
return parameters;
}
@Test
public void shouldReadPagesOfDocumentsFromSearcher() throws Exception {
final int labelId = 7;
final int pageSize = 2;
// given
Query query = mock(Query.class);
IndexSearcher searcher = mock(IndexSearcher.class);
ScoreDoc doc1 = new ScoreDoc(37, 0.0f);
ScoreDoc doc2 = new ScoreDoc(16, 0.0f);
ScoreDoc doc3 = new ScoreDoc(11, 0.0f);
when(searcher.searchAfter(any(ScoreDoc.class), same(query), anyInt()))
.thenReturn(
docs(doc1, doc2), // page1
docs(doc3) // page2
);
when(searcher.doc(37))
.thenReturn(document(format.rangeField(0x1), format.labelField(labelId, 0x01)));
when(searcher.doc(16))
.thenReturn(document(format.rangeField(0x2), format.labelField(labelId, 0x03)));
when(searcher.doc(11))
.thenReturn(document(format.rangeField(0x3), format.labelField(labelId, 0x30)));
PrimitiveLongIterator iterator =
flatten(new PageOfRangesIterator(format, searcher, pageSize, query, labelId));
// when
List<Long> longs = primitivesList(iterator);
// then
assertEquals(
asList(
/*doc1:*/ (1L << format.bitmapFormat().shift),
/*doc2:*/ (2L << format.bitmapFormat().shift),
(2L << format.bitmapFormat().shift) + 1,
/*doc3:*/ (3L << format.bitmapFormat().shift) + 4,
(3L << format.bitmapFormat().shift) + 5),
longs);
ArgumentCaptor<ScoreDoc> prefixCollector = ArgumentCaptor.forClass(ScoreDoc.class);
verify(searcher, times(2)).searchAfter(prefixCollector.capture(), same(query), eq(2));
assertEquals(asList(null, doc2), prefixCollector.getAllValues());
verify(searcher, times(3)).doc(anyInt());
verifyNoMoreInteractions(searcher);
}