public void testIDF() throws Exception {
Similarity saved = searcher.getSimilarity();
try {
searcher.setSimilarity(new DefaultSimilarity());
assertHits(new FunctionQuery(
new IDFValueSource("bogus", "bogus", "text", new BytesRef("test"))),
new float[] { 0.5945349f, 0.5945349f });
} finally {
searcher.setSimilarity(saved);
}
}