FabledGrimoire/tests/test_routes_rulebooks.py

"""Route-level tests for the rulebooks blueprint.

Mirrors the structural-tests pattern in tests/test_events_routes.py:
covers blueprint registration, callable handlers, and service-signature
contracts. Full HTTP integration requires a live DB and auth machinery
that the unit-test environment doesn't provide.
"""
import inspect


def test_rulebooks_blueprint_registered():
    from grimoire.routes.rulebooks import rulebooks_bp
    assert rulebooks_bp.name == "rulebooks"
    assert rulebooks_bp.url_prefix == "/api"


def test_rulebooks_blueprint_registered_in_app():
    from grimoire.app import create_app
    app = create_app()
    assert "rulebooks" in app.blueprints


def test_rulebook_handlers_callable():
    from grimoire.routes import rulebooks as rb_routes
    for name in (
        "list_rulebooks", "create_rulebook", "get_rulebook",
        "update_rulebook", "delete_rulebook",
    ):
        assert callable(getattr(rb_routes, name))


def test_topic_handlers_callable():
    from grimoire.routes import rulebooks as rb_routes
    for name in (
        "list_topics", "create_topic", "update_topic", "delete_topic",
    ):
        assert callable(getattr(rb_routes, name))


def test_service_signatures_require_user_id():
    """Routes must call services with user_id — verify the contract."""
    from grimoire.services import rulebooks as svc
    for fn_name in (
        "create_rulebook", "list_rulebooks", "get_rulebook",
        "update_rulebook", "delete_rulebook", "find_rulebook_by_title",
        "create_topic", "list_topics", "get_topic", "update_topic", "delete_topic",
        "create_rule", "create_project_rule", "rule_detail",
        "set_rule_systems", "add_rule_relation", "remove_rule_relation",
        "list_rules",
        "get_rule", "update_rule", "delete_rule",
        "get_applicable_rules",
    ):
        sig = inspect.signature(getattr(svc, fn_name))
        assert "user_id" in sig.parameters, f"{fn_name} missing user_id param"


def test_rule_model_carries_project_id_and_topic_id_nullable():
    """Migration 0059 made topic_id nullable and added project_id."""
    from grimoire.models.rulebook import Rule
    assert "project_id" in Rule.__table__.columns
    assert Rule.__table__.columns["topic_id"].nullable is True
    assert Rule.__table__.columns["project_id"].nullable is True


def test_create_project_rule_route_exists():
    """POST /api/projects/<id>/rules — the frontend fast-path endpoint."""
    from grimoire.routes import rulebooks as rb_routes
    assert callable(getattr(rb_routes, "create_project_rule"))


def test_subscriptions_and_suppressions_are_gone():
    """A rule's home is its scope. Nothing subscribes a project
    to a rulebook or mutes a rule for one — not a route, a service function or
    a table. A partial removal would leave a door that 500s on a missing table.
    """
    from grimoire.models import rulebook as rb_models
    from grimoire.routes import rulebooks as rb_routes
    from grimoire.services import rulebooks as svc
    for name in ("subscribe_project", "unsubscribe_project",
                 "suppress_project_rule", "unsuppress_project_rule",
                 "suppress_project_topic", "unsuppress_project_topic"):
        assert not hasattr(rb_routes, name), f"route handler still present: {name}"
    for name in ("subscribe_project", "unsubscribe_project",
                 "suppress_rule_for_project", "unsuppress_rule_for_project",
                 "suppress_topic_for_project", "unsuppress_topic_for_project"):
        assert not hasattr(svc, name), f"service function still present: {name}"
    for name in ("project_rulebook_subscriptions", "project_rule_suppressions",
                 "project_topic_suppressions"):
        assert not hasattr(rb_models, name), f"table still declared: {name}"


def test_rule_handlers_callable():
    from grimoire.routes import rulebooks as rb_routes
    for name in (
        "list_rules", "create_rule", "get_rule", "update_rule", "delete_rule",
        "get_project_rules", "move_rule",
        # The typed edges — both doors carry them.
        "relate_rules", "unrelate_rules",
    ):
        assert callable(getattr(rb_routes, name))


def test_the_rule_list_zero_fills_usage_on_every_row():
    """Asserted the only way this harness allows.

    There is no live-HTTP fixture here (see this module's docstring), so this
    reads the handler's source. What it can still prove is the property that
    gets forgotten: the route must attach the key to EVERY row, zero-filled,
    rather than only to rows that happen to have events. Every rule on every
    existing install predates `rule_usage_events`, so a route that only
    attached the key when it found something would leave the badge component
    reading `undefined` on almost every row — and the difference between "no
    events" and "no field" is exactly the distinction a readout must keep.
    """
    import inspect

    from grimoire.routes import rulebooks as rb_routes

    src = inspect.getsource(rb_routes.list_rules)
    assert "usage_for_rules" in src, "the rule list does not read usage at all"
    assert "empty_rule_usage()" in src, (
        "the rule list does not zero-fill — a rule with no events would come "
        "back without the key rather than with an empty one"
    )