GH-5: Create a basic test-case

Author: ArtyomVancyan

tests/test_oauth2_middleware.py

@@ -0,0 +1,19 @@
+from fastapi import APIRouter
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+from fastapi_oauth2.middleware import OAuth2Middleware
+from fastapi_oauth2.router import router as oauth2_router
+
+app = FastAPI()
+router = APIRouter()
+
+app.include_router(oauth2_router)
+app.add_middleware(OAuth2Middleware, config={})
+
+client = TestClient(app)
+
+
+def test_read_main():
+    response = client.get("/")
+    assert response.status_code == 404