defect-analysis/tests/test_cases.py

import tempfile
import unittest
from pathlib import Path

from defect_analysis.cases import (
    create_root_cause_case,
    get_audit_logs,
    list_cases,
    update_case_status,
)
from defect_analysis.database import init_database


class CasesTest(unittest.TestCase):
    def setUp(self):
        self.tmpdir = tempfile.TemporaryDirectory()
        self.db_path = Path(self.tmpdir.name) / "cases.db"
        init_database(self.db_path)

    def tearDown(self):
        self.tmpdir.cleanup()

    def test_create_root_cause_case_records_audit_log(self):
        case_id = create_root_cause_case(
            self.db_path,
            title="LAM-A01 R2C3 气泡异常",
            candidate_type="equipment_seat",
            candidate_value="LAM-A01 / R2C3",
            defect_type="气泡",
            panel_zone="FPC/绑定区",
            owner="工程师A",
            created_by="tester",
            recommendation="检查贴合压力和吸嘴状态",
        )

        cases = list_cases(self.db_path)
        logs = get_audit_logs(self.db_path, entity_type="case", entity_id=case_id)

        self.assertEqual(1, len(cases))
        self.assertEqual("OPEN", cases.loc[0, "status"])
        self.assertEqual("工程师A", cases.loc[0, "owner"])
        self.assertEqual(1, len(logs))
        self.assertEqual("CREATE_CASE", logs.loc[0, "action"])

    def test_update_case_status_records_transition_and_audit_log(self):
        case_id = create_root_cause_case(
            self.db_path,
            title="治具划痕异常",
            candidate_type="lam_fixture_id",
            candidate_value="FIX-A01-03",
            defect_type="划痕",
            panel_zone="左边缘区",
            owner="工程师B",
            created_by="tester",
            recommendation="点检治具接触面",
        )

        update_case_status(
            self.db_path,
            case_id=case_id,
            status="IN_PROGRESS",
            actor="工程师B",
            note="已安排停机点检",
        )
        update_case_status(
            self.db_path,
            case_id=case_id,
            status="CLOSED",
            actor="工程师B",
            note="已更换治具，观察 3 天无复发",
        )

        cases = list_cases(self.db_path)
        logs = get_audit_logs(self.db_path, entity_type="case", entity_id=case_id)

        self.assertEqual("CLOSED", cases.loc[0, "status"])
        self.assertEqual(["CREATE_CASE", "UPDATE_STATUS", "UPDATE_STATUS"], logs["action"].tolist())
        self.assertIn("已更换治具", logs.iloc[-1]["details"])

    def test_closed_case_cannot_reopen(self):
        case_id = create_root_cause_case(
            self.db_path,
            title="治具划痕异常",
            candidate_type="lam_fixture_id",
            candidate_value="FIX-A01-03",
            defect_type="划痕",
            panel_zone="左边缘区",
            owner="工程师B",
            created_by="tester",
            recommendation="点检治具接触面",
        )
        update_case_status(self.db_path, case_id=case_id, status="CLOSED", actor="工程师B")

        with self.assertRaises(ValueError):
            update_case_status(self.db_path, case_id=case_id, status="OPEN", actor="工程师B")


if __name__ == "__main__":
    unittest.main()