"""SqliteDiagnosisSignalStore 单元测试。

验证逐题诊断信号的 upsert 幂等、断点续跑（done_question_ids）、
load 往返还原，以及 INFRA 行的可空字段处理。
"""

from adapters.baseline_diagnosis_store import DiagnosisSignalRow, SqliteDiagnosisSignalStore


def _store(tmp_path):
    """构造指向临时 harness.db 的信号存储。"""
    return SqliteDiagnosisSignalStore(str(tmp_path / "h.db"))


def test_upsert_and_get_done_ids(tmp_path):
    s = _store(tmp_path)
    row = DiagnosisSignalRow(
        question_id="q1",
        video_id="v1",
        baseline_run_id="r",
        diag_fingerprint="fp",
        task_type="Counting",
        error_type="search_failure",
        cause_category="defect",
        tier="T2",
        evolution_target="skill",
        degraded=False,
        infra=False,
        session_id="s",
    )
    s.upsert(row)
    assert s.done_question_ids("r", "fp") == {"q1"}
    s.upsert(row)  # 同键覆盖，不重复
    assert s.done_question_ids("r", "fp") == {"q1"}
    assert s.done_question_ids("r", "other_fp") == set()  # 不同 fingerprint 隔离


def test_load_rows_roundtrip(tmp_path):
    s = _store(tmp_path)
    s.upsert(
        DiagnosisSignalRow(
            "q2",
            "v2",
            "r",
            "fp",
            "OCR Problems",
            "extraction_failure",
            "lapse",
            "T1",
            "tool",
            False,
            False,
            "s",
        )
    )
    rows = s.load("r", "fp")
    assert len(rows) == 1 and rows[0].tier == "T1" and rows[0].evolution_target == "tool"


def test_null_fields_for_infra_row(tmp_path):
    s = _store(tmp_path)
    # T0 INFRA 行：error_type/cause_category/evolution_target 为 None
    s.upsert(
        DiagnosisSignalRow(
            "q3",
            "v3",
            "r",
            "fp",
            "Counting",
            None,
            None,
            "T0",
            None,
            degraded=False,
            infra=True,
            session_id=None,
        )
    )
    rows = s.load("r", "fp")
    assert rows[0].error_type is None and rows[0].evolution_target is None and rows[0].infra is True