httpx deprecated for starlette TestClient #15742

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Example Code

from fastapi.testclient import TestClient

def test_health_returns_200(client: TestClient):
    resp = client.get("/health")
    assert resp.status_code == 200

Description

.venv/lib/python3.14/site-packages/fastapi/testclient.py:1
  /home/[redacted]/.venv/lib/python3.14/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead.
    from starlette.testclient import TestClient as TestClient  # noqa

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html

Operating System

Linux

Operating System Details

No response

FastAPI Version

0.136.3

Pydantic Version

2.13.4

Python Version

3.14

Additional Context

Using uv not pip