func TestNegativeQueryBoost(t *testing.T) {
Test(t, func(t *T) {
q := search.NewTermQuery(index.NewTerm("foo", "bar"))
q.SetBoost(-42)
t.Assert(-42 == q.Boost())
directory := NewDirectory()
defer directory.Close()
analyzer := analysis.NewMockAnalyzerWithRandom(Random())
conf := NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer)
writer, err := index.NewIndexWriter(directory, conf)
if err != nil {
t.Error(err)
}
defer writer.Close()
d := index.NewDocument()
d.Add(NewTextField("foo", "bar", true))
writer.AddDocument(d.Fields())
writer.Close() // ensure index is written
reader, err := index.OpenDirectoryReader(directory)
if err != nil {
t.Error(err)
}
defer reader.Close()
searcher := NewSearcher(reader)
res, err := searcher.Search(q, nil, 1000)
if err != nil {
t.Error(err)
}
hits := res.ScoreDocs
t.Assert(1 == len(hits))
t.Assert2(hits[0].Score < 0, fmt.Sprintf("score is not negative: %v", hits[0].Score))
explain, err := searcher.Explain(q, hits[0].Doc)
if err != nil {
t.Error(err)
}
t.Assert2(isSimilar(hits[0].Score, explain.Value(), 0.01), "score doesn't match explanation")
t.Assert2(explain.IsMatch(), "explain doesn't think doc is a match")
})
}