修复坏枪从来没有运行过的单元测试，为项目引入单元测试框架（终于。。）

tests/conftest.py

@@ -0,0 +1,28 @@
+# 文件内容来源：
+#     https://nonebot.dev/docs/best-practice/testing/
+# 保证 nonebug 测试框架正常运作
+
+import pytest
+import nonebot
+from pytest_asyncio import is_async_test
+from nonebot.adapters.console import Adapter as ConsoleAdapter
+from nonebug import NONEBOT_START_LIFESPAN
+
+
+def pytest_collection_modifyitems(items: list[pytest.Item]):
+    pytest_asyncio_tests = (item for item in items if is_async_test(item))
+    session_scope_marker = pytest.mark.asyncio(loop_scope="session")
+    for async_test in pytest_asyncio_tests:
+        async_test.add_marker(session_scope_marker, append=False)
+
+
+@pytest.fixture(scope="session", autouse=True)
+async def after_nonebot_init(after_nonebot_init: None):
+    driver = nonebot.get_driver()
+    driver.register_adapter(ConsoleAdapter)
+
+    nonebot.load_from_toml("pyproject.toml")
+
+
+def pytest_configure(config: pytest.Config):
+    config.stash[NONEBOT_START_LIFESPAN] = False