*
     * @param userMessage the user's original message
     * @param failedQuery the query that failed
     * @param failureReason the reason for failure ("no_results" or "no_relevant_results")
     * @param history the conversation history
     * @return a new query string, or the userMessage if regeneration fails
     */

        assertTrue(result.getRelevantIndexes().isEmpty());
    }

    @Test
    public void test_noRelevantResults() {
        RelevanceEvaluationResult result = RelevanceEvaluationResult.noRelevantResults();

        assertFalse(result.isHasRelevantResults());
        assertNotNull(result.getRelevantDocIds());
        assertTrue(result.getRelevantDocIds().isEmpty());
        assertNotNull(result.getRelevantIndexes());

    }

    /**
     * Creates a result with no relevant documents found.
     *
     * @return evaluation result with no relevant documents
     */
    public static RelevanceEvaluationResult noRelevantResults() {
        return new RelevanceEvaluationResult(Collections.emptyList(), Collections.emptyList(), false);
    }

    /**
     * Creates a fallback result that includes all documents as relevant.