from types import SimpleNamespace
import yaml

from info_tech_canon.import_reviews import reviewed_import_cycles


def fixture(tmp_path):
    (tmp_path / "validation").mkdir()
    (tmp_path / "review.md").write_text("Distinct concept owners reviewed.")
    edges = [["a", "uses", "b"], ["b", "uses", "a"]]
    (tmp_path / "validation/model-import-reviews.yaml").write_text(yaml.safe_dump(
        {"reviews": [{"boundary_review": "review.md", "edges": edges}]}))
    return [SimpleNamespace(id="a", kind="model", relationships=[{"type": "uses", "target": "b"}]),
            SimpleNamespace(id="b", kind="model", relationships=[{"type": "uses", "target": "a"}])]


def test_exact_review_preserves_reciprocal_imports(tmp_path):
    artifacts = fixture(tmp_path)
    assert len(reviewed_import_cycles(artifacts, tmp_path)) == 1
    assert artifacts[0].relationships == [{"type": "uses", "target": "b"}]


def test_new_internal_edge_or_type_is_not_excused(tmp_path):
    artifacts = fixture(tmp_path)
    artifacts[0].relationships.append({"type": "defines", "target": "b"})
    assert reviewed_import_cycles(artifacts, tmp_path) is None


def test_new_component_member_is_not_excused(tmp_path):
    artifacts = fixture(tmp_path)
    artifacts[0].relationships.append({"type": "uses", "target": "c"})
    artifacts.append(SimpleNamespace(id="c", kind="model", relationships=[{"type": "uses", "target": "a"}]))
    assert reviewed_import_cycles(artifacts, tmp_path) is None


def test_missing_rationale_is_not_excused(tmp_path):
    artifacts = fixture(tmp_path)
    (tmp_path / "review.md").unlink()
    assert reviewed_import_cycles(artifacts, tmp_path) is None


def test_unreviewed_second_cycle_is_not_excused(tmp_path):
    artifacts = fixture(tmp_path)
    artifacts.append(SimpleNamespace(id="c", kind="model", relationships=[{"type": "uses", "target": "c"}]))
    assert reviewed_import_cycles(artifacts, tmp_path) is None