mirror of
https://github.com/jxxghp/MoviePilot.git
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129 lines
3.8 KiB
Python
129 lines
3.8 KiB
Python
"""事件注册、绑定、调度和错误策略组件的独立测试。"""
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import threading
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from unittest.mock import Mock
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from app.runtime.event.binding import (
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EventBindingResolver,
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EventHandlerBinding,
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)
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from app.runtime.event.errors import EventErrorPolicy
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from app.runtime.events import Event
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from app.schemas.types import EventType
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from app.startup.modules_initializer import get_host_event_handler_factories
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class _UnmanagedHandler:
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"""记录构造次数，用于证明绑定未命中时不会被总线实例化。"""
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constructed = 0
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def __init__(self) -> None:
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"""记录任何非预期的隐式构造。"""
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type(self).constructed += 1
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def handle(self, _event: Event) -> None:
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"""提供可解析的实例方法声明。"""
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def test_binding_miss_does_not_construct_handler_owner() -> None:
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"""resolver 未命中时只记录诊断，不能调用 owner_class()。"""
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resolvers = {}
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binding = EventBindingResolver(
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lock=threading.Lock(),
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resolvers=lambda: resolvers,
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)
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_UnmanagedHandler.constructed = 0
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assert binding.resolve(_UnmanagedHandler.handle) is None
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assert _UnmanagedHandler.constructed == 0
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assert binding.unresolved_handlers() == (
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f"{__name__}._UnmanagedHandler.handle",
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)
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def test_binding_uses_explicit_resolver_instance() -> None:
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"""显式 resolver 应返回当前托管实例上的绑定方法。"""
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instance = object.__new__(_UnmanagedHandler)
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resolvers = {
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"test": lambda owner: EventHandlerBinding(
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instance=instance,
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owner_name="托管处理器",
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)
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if owner is _UnmanagedHandler
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else None
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}
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binding = EventBindingResolver(
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lock=threading.Lock(),
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resolvers=lambda: resolvers,
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)
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method, resolved, class_name, method_name = binding.resolve(
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_UnmanagedHandler.handle
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)
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assert method.__self__ is instance
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assert resolved.owner_name == "托管处理器"
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assert class_name == "_UnmanagedHandler"
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assert method_name == "handle"
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def test_system_error_failure_does_not_rebroadcast() -> None:
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"""SystemError 处理器自身失败时只能通知和日志降级，不能再次发送事件。"""
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notifier = Mock()
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emit = Mock()
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policy = EventErrorPolicy(
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notifier=lambda: notifier,
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emit_system_error=emit,
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)
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policy.handle(
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event=Event(EventType.SystemError, {}),
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module_name="测试模块",
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class_name="BrokenHandler",
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method_name="handle",
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error=RuntimeError("broken"),
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)
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notifier.assert_called_once()
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emit.assert_not_called()
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def test_regular_event_failure_emits_one_system_error() -> None:
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"""普通事件失败应生成一次结构稳定的 SystemError 载荷。"""
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emit = Mock()
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policy = EventErrorPolicy(
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notifier=lambda: None,
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emit_system_error=emit,
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)
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policy.handle(
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event=Event(EventType.ConfigChanged, {}),
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module_name="测试模块",
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class_name="BrokenHandler",
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method_name="handle",
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error=RuntimeError("broken"),
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)
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payload = emit.call_args.args[0]
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assert payload["type"] == "event"
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assert payload["event_type"] is EventType.ConfigChanged
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assert payload["event_handle"] == "BrokenHandler.handle"
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assert payload["error"] == "broken"
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def test_all_decorated_host_handler_classes_have_explicit_factories() -> None:
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"""宿主中使用事件装饰器的类必须全部由组合根 resolver 白名单接管。"""
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factories = get_host_event_handler_factories()
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assert {owner.__name__ for owner in factories} == {
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"Command",
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"DownloadChain",
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"Scheduler",
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"ScrapingChain",
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"SearchChain",
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"SiteChain",
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"SubscribeChain",
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"WorkflowChain",
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}
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