/** check that the # of hits is the same as from a very simple regexpquery implementation. */
private void assertSame(String regexp) throws IOException {
RegexpQuery smart = new RegexpQuery(new Term("field", regexp), RegExp.NONE);
DumbRegexpQuery dumb = new DumbRegexpQuery(new Term("field", regexp), RegExp.NONE);
// we can't compare the two if automaton rewrites to a simpler enum.
// for example: "a\uda07\udcc7?.*?" gets rewritten to a simpler query:
// a\uda07* prefixquery. Prefixquery then does the "wrong" thing, which
// isn't really wrong as the query was undefined to begin with... but not
// automatically comparable.
if (!(smart.getTermsEnum(searcher.getIndexReader()) instanceof AutomatonTermsEnum)) return;
TopDocs smartDocs = searcher.search(smart, 25);
TopDocs dumbDocs = searcher.search(dumb, 25);
CheckHits.checkEqual(smart, smartDocs.scoreDocs, dumbDocs.scoreDocs);
}
