104 lines
3.8 KiB
Python
104 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
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"""幻觉/事实性校验（hallucination）单元测试：引用溯源 / 信度阈值 / 评测。"""
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import os
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import sys
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import unittest
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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import _bootstrap # noqa: F401
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from llm_gateway.hallucination import HallucinationGuard # noqa: E402
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class CitationCheckTest(unittest.TestCase):
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def setUp(self):
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self.guard = HallucinationGuard(default_threshold=0.8)
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def test_declared_sources_are_verified(self):
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verdict = self.guard.check(
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answer="炉温偏高应降温。[来源: 沸腾氯化炉异常处置SOP]",
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sources=["沸腾氯化炉异常处置SOP", "交接班规范"],
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)
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self.assertTrue(verdict.supported)
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self.assertEqual(verdict.action, "pass")
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def test_missing_source_is_unsupported(self):
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verdict = self.guard.check(
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answer="应停机。[来源: 不存在的文档]",
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sources=["沸腾氯化炉异常处置SOP"],
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)
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self.assertFalse(verdict.supported)
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self.assertEqual(verdict.action, "unsupported")
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self.assertIn("不存在的文档", verdict.missing_sources)
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def test_no_citation_is_supported(self):
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# 无引用声明 = 不判幻觉（引用为强制项由 RAG 模板保证）
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verdict = self.guard.check(answer="按操作规程执行。", sources=[])
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self.assertTrue(verdict.supported)
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self.assertEqual(verdict.action, "pass")
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class ConfidenceThresholdTest(unittest.TestCase):
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def setUp(self):
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self.guard = HallucinationGuard(default_threshold=0.8)
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def test_low_confidence_high_stakes_human_review(self):
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verdict = self.guard.check(
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answer="建议立即停机。[来源: SOP]",
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sources=["SOP"], confidence=0.55, high_stakes=True,
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)
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self.assertEqual(verdict.action, "human_review")
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def test_high_confidence_high_stakes_passes(self):
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verdict = self.guard.check(
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answer="建议观察并记录。[来源: SOP]",
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sources=["SOP"], confidence=0.95, high_stakes=True,
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)
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self.assertEqual(verdict.action, "pass")
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def test_low_confidence_non_stakes_passes(self):
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# 非高利害场景不启用阈值
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verdict = self.guard.check(
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answer="一般说明。[来源: 手册]", sources=["手册"],
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confidence=0.3, high_stakes=False,
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)
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self.assertEqual(verdict.action, "pass")
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def test_custom_threshold(self):
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verdict = self.guard.check(
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answer="处置建议。[来源: 手册]", sources=["手册"],
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confidence=0.7, high_stakes=True, threshold=0.6,
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)
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self.assertEqual(verdict.action, "pass")
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class EvaluateTest(unittest.TestCase):
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def setUp(self):
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self.guard = HallucinationGuard()
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def test_evaluate_rates(self):
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samples = [
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{"answer": "a[来源: X]", "sources": ["X"], "confidence": 0.9, "high_stakes": True},
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{"answer": "b[来源: Y]", "sources": ["Z"], "confidence": 0.9},
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{"answer": "c[来源: X]", "sources": ["X"], "confidence": 0.4, "high_stakes": True},
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]
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report = self.guard.evaluate(samples)
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self.assertEqual(report["total"], 3)
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# 支持 2 条（a/c），human_review 1 条（c）
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self.assertEqual(report["supported_rate"], round(2 / 3, 4))
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self.assertEqual(report["human_review_rate"], round(1 / 3, 4))
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def test_empty_samples(self):
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report = self.guard.evaluate([])
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self.assertEqual(report["total"], 0)
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def test_audit_records(self):
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self.guard.check("x[来源: A]", sources=["A"])
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records = self.guard.drain_audit()
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self.assertEqual(len(records), 1)
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self.assertEqual(records[0]["action"], "pass")
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if __name__ == "__main__":
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unittest.main()
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