test: added testing for lifespan events

Author: hel-mefe

tests/test_lifespan.py

@@ -0,0 +1,51 @@
+import pytest
+
+from microapi.app import MicroAPI
+
+
+@pytest.mark.asyncio
+async def test_startup_and_shutdown_hooks_run():
+    events = []
+
+    app = MicroAPI()
+
+    @app.on_startup
+    async def startup():
+        events.append("startup")
+
+    @app.on_shutdown
+    async def shutdown():
+        events.append("shutdown")
+
+    await app._run_startup()
+    await app._run_shutdown()
+
+    assert events == ["startup", "shutdown"]
+
+
+@pytest.mark.asyncio
+async def test_multiple_hooks_preserve_order():
+    events = []
+
+    app = MicroAPI()
+
+    @app.on_startup
+    async def s1():
+        events.append("s1")
+
+    @app.on_startup
+    async def s2():
+        events.append("s2")
+
+    @app.on_shutdown
+    async def d1():
+        events.append("d1")
+
+    @app.on_shutdown
+    async def d2():
+        events.append("d2")
+
+    await app._run_startup()
+    await app._run_shutdown()
+
+    assert events == ["s1", "s2", "d1", "d2"]