Build 060.25: implement Production Runtime Integration

app/tests/unit/test_main.py

@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+import asyncio
+
+import src.main as main_module
+
+
+def test_main_runs_application_composition(
+    monkeypatch,
+) -> None:
+    application = object()
+    received_applications: list[object] = []
+
+    monkeypatch.setattr(
+        main_module,
+        "create_app",
+        lambda: application,
+    )
+
+    async def run(received_application: object) -> None:
+        received_applications.append(
+            received_application,
+        )
+
+    monkeypatch.setattr(
+        main_module,
+        "run_application",
+        run,
+    )
+
+    asyncio.run(main_module.main())
+
+    assert received_applications == [application]