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tests/test_tutorial/test_behind_a_proxy/test_tutorial001.py

client = TestClient(app, root_path="/api/v1")


def test_main():
    response = client.get("/app")
    assert response.status_code == 200
    assert response.json() == {"message": "Hello World", "root_path": "/api/v1"}


def test_openapi():
    response = client.get("/openapi.json")
    assert response.status_code == 200
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},

Created: Sun Dec 28 07:19:09 GMT 2025

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github.com/tiangolo/fastapi

tests/test_tutorial/test_extra_models/test_tutorial004.py

    response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.json() == [
        {"name": "Foo", "description": "There comes my hero"},
        {"name": "Red", "description": "It's my aeroplane"},
    ]


def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text

Created: Sun Dec 28 07:19:09 GMT 2025

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github.com/tiangolo/fastapi

tests/test_tutorial/test_authentication_error_status_code/test_tutorial001.py

    assert response.status_code == 200
    assert response.json() == {
        "message": "You are authenticated",
        "token": "secrettoken",
    }


def test_get_me_no_credentials(client: TestClient):
    response = client.get("/me")
    assert response.status_code == 403
    assert response.json() == {"detail": "Not authenticated"}

Created: Sun Dec 28 07:19:09 GMT 2025

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github.com/tiangolo/fastapi

tests/test_tutorial/test_websockets/test_tutorial001.py

from fastapi.websockets import WebSocketDisconnect

from docs_src.websockets.tutorial001_py39 import app

client = TestClient(app)


def test_main():
    response = client.get("/")
    assert response.status_code == 200, response.text
    assert b"<!DOCTYPE html>" in response.content


def test_websocket():
    with pytest.raises(WebSocketDisconnect):
        with client.websocket_connect("/ws") as websocket:

Created: Sun Dec 28 07:19:09 GMT 2025

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github.com/tiangolo/fastapi

tests/test_tutorial/test_custom_response/test_tutorial002_tutorial003_tutorial004.py

        <body>
            <h1>Look ma! HTML!</h1>
        </body>
    </html>
    """


def test_get_custom_response(client: TestClient):
    response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.text == html_contents


def test_openapi_schema(client: TestClient, mod_name: str):
    if mod_name.startswith("tutorial003"):

Created: Sun Dec 28 07:19:09 GMT 2025

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github.com/tiangolo/fastapi

docs_src/app_testing/tutorial004_py39.py

    # Before the lifespan starts, "items" is still empty
    assert items == {}

    with TestClient(app) as client:
        # Inside the "with TestClient" block, the lifespan starts and items added
        assert items == {"foo": {"name": "Fighters"}, "bar": {"name": "Tenders"}}

        response = client.get("/items/foo")
        assert response.status_code == 200
        assert response.json() == {"name": "Fighters"}

Created: Sun Dec 28 07:19:09 GMT 2025

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github.com/tiangolo/fastapi

tests/test_tutorial/test_body/test_tutorial004.py

    )
    assert response.status_code == 200
    assert response.json() == {
        "item_id": 123,
        "name": "Foo",
        "price": 50.1,
        "description": None,
        "tax": None,
    }


def test_put_with_no_data(client: TestClient):
    response = client.put("/items/123", json={})
    assert response.status_code == 422
    assert response.json() == {
        "detail": [

Created: Sun Dec 28 07:19:09 GMT 2025

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github.com/tiangolo/fastapi

tests/test_tutorial/test_encoder/test_tutorial001.py

        json={
            "title": "Foo",
            "timestamp": "2023-01-01T12:00:00",
            "description": "An optional description",
        },
    )
    assert response.status_code == 200
    assert "123" in fake_db
    assert fake_db["123"] == {
        "title": "Foo",
        "timestamp": "2023-01-01T12:00:00",
        "description": "An optional description",
    }

Created: Sun Dec 28 07:19:09 GMT 2025

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github.com/tiangolo/fastapi

tests/test_tutorial/test_body_updates/test_tutorial001.py

    )
    assert response.json() == {
        "name": "Barz",
        "description": None,
        "price": 3,
        "tax": 10.5,
        "tags": [],
    }


def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",

Created: Sun Dec 28 07:19:09 GMT 2025

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github.com/tiangolo/fastapi

tests/test_dependency_after_yield_websockets.py


def test_websocket_dependency_after_yield():
    with client.websocket_connect("/ws") as websocket:
        data = websocket.receive_text()
        assert data == "foo"
        data = websocket.receive_text()
        assert data == "bar"
        data = websocket.receive_text()
        assert data == "baz"


def test_websocket_dependency_after_yield_broken():
    with pytest.raises(ValueError, match="Session closed"):

Created: Sun Dec 28 07:19:09 GMT 2025

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