"""`dwg_review.context.ReviewContext` 单元测试（重点：离线模式不碰网络）。"""

from dwg_review import evidence_model
from dwg_review.context import ReviewContext


def test_create_offline_has_no_client_or_tools():
    """connect_cad=False → client / tools 均为 None（不构造 CadTools，不连 8080）。"""
    ctx = ReviewContext.create(need_llm=False, connect_cad=False)
    assert ctx.client is None
    assert ctx.tools is None
    assert ctx.llm is None
    # 离线上下文仍应加载好清单（纯文件读取）
    assert isinstance(ctx.checklist, dict)


def test_create_offline_default_source_is_cad():
    ctx = ReviewContext.create(need_llm=False, connect_cad=False)
    assert ctx.source == evidence_model.SOURCE_CAD


def test_create_offline_explicit_source():
    ctx = ReviewContext.create(need_llm=False, connect_cad=False, source=evidence_model.SOURCE_PDF)
    assert ctx.source == evidence_model.SOURCE_PDF


def test_create_offline_overrides_apply():
    ctx = ReviewContext.create(
        need_llm=False, connect_cad=False, max_frames=3, frame_limit=9, dry_run=True
    )
    assert ctx.max_frames == 3
    assert ctx.frame_limit == 9
    assert ctx.dry_run is True


def test_create_offline_does_not_connect(monkeypatch):
    """确保离线路径完全没有实例化 McpClient / CadTools（真连会抛 OSError）。"""

    def _boom(*a, **k):  # pragma: no cover - 被调用即失败
        raise AssertionError("离线模式不应触碰 CAD 客户端")

    monkeypatch.setattr("dwg_review.context.McpClient", _boom)
    monkeypatch.setattr("dwg_review.context.CadTools", _boom)
    ctx = ReviewContext.create(need_llm=False, connect_cad=False)
    assert ctx.client is None and ctx.tools is None