I'm encountering a deprecation warning related to Jinja2Templates when running pytest tests with starlette>=0.28.0 :

.venv/lib/python3.11/site-packages/starlette/templating.py:106: DeprecationWarning: Extra environment options are deprecated. Use a preconfigured jinja2.Environment instead.
    warnings.warn(

This warning does not appear when installing starlette==0.27.0

According to the Starlette 0.28.0 release notes, the **env_options parameter in Jinja2Templates has been deprecated in favor of the new env parameter. The relevant pull request #2159 explains this change.

It seems likely that Starlette Admin (or other dependencies) are still using the deprecated **env_options, causing the warning when running tests with Starlette 0.28.0.

Steps to Reproduce:

1. Project Structure:

   .
   ├── app.py
   ├── requirements-deprecation-warning.txt
   ├── requirements-no-warnings.txt
   └── test_app.py
   

2. Source Code:

   app.py:

   from fastapi import FastAPI
   from starlette_admin.contrib.sqlmodel import Admin
   from sqlmodel import SQLModel, create_engine
   
   DATABASE_URL = "sqlite:///./test.db"
   engine = create_engine(DATABASE_URL, echo=True)
   SQLModel.metadata.create_all(engine)
   
   app = FastAPI()
   admin = Admin(engine, title="Simple Admin")
   admin.mount_to(app)

   test_app.py:

   import pytest
   from fastapi.testclient import TestClient
   from app import app
   
   @pytest.fixture(scope="module")
   def client():
       with TestClient(app) as client:
           yield client
   
   def test_admin_page(client):
       response = client.get("/admin")
       assert response.status_code == 200
       assert "Simple Admin" in response.text

3. Requirements Files:

   requirements-deprecation-warning.txt:

   fastapi
   sqlmodel
   uvicorn
   starlette-admin
   jinja2
   sqlalchemy
   starlette==0.28.0
   pytest
   httpx==0.24.1
   

   requirements-no-warnings.txt:

   fastapi
   sqlmodel
   uvicorn
   starlette-admin
   jinja2
   sqlalchemy
   starlette==0.27.0
   pytest
   httpx==0.24.1
   

4. Reproduce the Warning:

   pip install -r requirements-deprecation-warning.txt
   pytest

   Result: Deprecation Warning

   pip install -r requirements-no-warnings.txt
   pytest

   Result: All tests pass without warnings.