TestClient DeprecationWarning with httpx 0.27.0

[b-phi]

httpx has deprecated the app parameter for their Client class in 0.27.0. The starlette TestClient should likely be updated to use only the transport parameter of the httpx Client https://github.com/encode/starlette/blob/master/starlette/testclient.py#L456

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[Kludex]

We need to pass transport instead of app to httpx.Client, yeah.

[JaimeFLandbot]

This is unclear to me.

I'm using version starlette==0.36.3 that comes from fastapi

But it still shows the warning

Is there any specific change I need to do?

[Kludex]

You need to wait for the new release of both Starlette, and FastAPI.

[keakon]

transport = ASGITransport(app=app)

def async_client():
    return AsyncClient(transport=transport, base_url="http://test")

@pytest.mark.asyncio
async def test_xxx():
    async with async_client() as client:
        response = await client.get('/xxx')

[TheNotary]

Btw, you can make all the example documentation work fine without warnings by using httpx==0.26.0.

[raphaellaude]

For those coming from FastAPI, upgrading to 0.114.0 did the trick for me (starlette 0.38.5).

[ofer-pd]

There's a section of Starlette docs that should probably be updated to replace the use of the now-deprecated app arg:

https://www.starlette.io/testclient/#asynchronous-tests