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This section provides tips for troubleshooting and resolving common development mistakes and error situations.

API tests return an unexpected 307 Redirected

Summary: Requests require a trailing / in the request URL.

If you write a test that does not include a trailing / in the request URL:

async def test_example(client):
    response = await"/my_route")
    assert response.status_code == 201

You'll see a failure like:

E       assert 307 == 201
E        +  where 307 = <Response [307 Temporary Redirect]>.status_code

To resolve this, include the trailing /:

async def test_example(client):
    response = await"/my_route/")
    assert response.status_code == 201

Reference: "HTTPX disabled redirect following by default" in 0.22.0.