feat: code quality (#39)

tests/test_init.py

@@ -0,0 +1,11 @@
+import pytest
+from fastapi import APIRouter
+
+from .. import boltcards_ext
+
+
+# just import router and add it to a test router
+@pytest.mark.asyncio
+async def test_router():
+    router = APIRouter()
+    router.include_router(boltcards_ext)