// Test with empty phrase query - should throw InvalidQueryException
        PhraseQuery.Builder builder = new PhraseQuery.Builder();
        PhraseQuery phraseQuery = builder.build();
        QueryContext context = new QueryContext("test", false);

        try {
            queryCommand.convertPhraseQuery(context, phraseQuery, 1.0f);
            fail("Should throw InvalidQueryException for empty phrase query");

        // Test executing BoostQuery with a PhraseQuery inside
        PhraseQuery.Builder builder = new PhraseQuery.Builder();
        builder.add(new Term("field", "hello"));
        builder.add(new Term("field", "world"));
        PhraseQuery phraseQuery = builder.build();
        BoostQuery boostQuery = new BoostQuery(phraseQuery, 1.5f);

        QueryContext context = new QueryContext("test", false);

        query = queryParser.createDefaultFilterChain().parse("\"fess codelibs\"");
        assertEquals(PhraseQuery.class, query.getClass());
        assertEquals("_default:fess", ((PhraseQuery) query).getTerms()[0].toString());
        assertEquals("_default:codelibs", ((PhraseQuery) query).getTerms()[1].toString());

        query = queryParser.createDefaultFilterChain().parse("fess codelibs");