How to use fastapi - 10 common examples

def test_invalid_dict():
    with pytest.raises(AssertionError):
        app = FastAPI()

        class Item(BaseModel):
            title: str

        @app.get("/items/")
        def read_items(q: Dict[str, Item] = Query(None)):
            pass  # pragma: no cover

from typing import Optional

from fastapi import FastAPI
from pydantic import BaseModel
from starlette.testclient import TestClient

app = FastAPI()


class SubModel(BaseModel):
    a: Optional[str] = "foo"


class Model(BaseModel):
    x: Optional[int]
    sub: SubModel


class ModelSubclass(Model):
    y: int


@app.get("/", response_model=Model, response_model_exclude_unset=True)

from typing import Optional

from fastapi import FastAPI, Security
from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
from starlette.testclient import TestClient

app = FastAPI()

security = HTTPBearer(auto_error=False)


@app.get("/users/me")
def read_current_user(
    credentials: Optional[HTTPAuthorizationCredentials] = Security(security),
):
    if credentials is None:
        return {"msg": "Create an account first"}
    return {"scheme": credentials.scheme, "credentials": credentials.credentials}


client = TestClient(app)

openapi_schema = {

        def read_items(q: Dict[str, Item] = Query(None)):
            pass  # pragma: no cover

def test_no_recycling_in_bretagne_poi():
    """
    Check that no trash info is provided for a POI in bretagne
    """
    client = TestClient(app)
    response = client.get(url=f"http://localhost/v1/pois/osm:node:36153811")

    assert response.status_code == 200

    resp = response.json()

    assert resp["id"] == "osm:node:36153811"
    assert resp["name"] == "Multiplexe Liberté"
    assert len([x for x in resp["blocks"] if x["type"] == "recycling"]) == 0

def test_direction_car(mock_directions_car):
    client = TestClient(app)
    response = client.get(
        "http://localhost/v1/directions/2.3402355%2C48.8900732%3B2.3688579%2C48.8529869",
        params={"language": "fr", "type": "driving", "exclude": "ferry"},
    )

    assert response.status_code == 200

    response_data = response.json()
    assert response_data["status"] == "success"
    assert len(response_data["data"]["routes"]) == 3
    assert all(r["geometry"] for r in response_data["data"]["routes"])
    assert response_data["data"]["routes"][0]["duration"] == 1819
    assert len(response_data["data"]["routes"][0]["legs"]) == 1
    assert len(response_data["data"]["routes"][0]["legs"][0]["steps"]) == 10
    assert response_data["data"]["routes"][0]["legs"][0]["mode"] == "CAR"
    assert "exclude=ferry" in mock_directions_car.calls[0].request.url

def test_contact_phone():
    """
    The louvre museum has the tag 'contact:phone'
    We test this tag is correct here
    """
    client = TestClient(app)
    response = client.get(url=f"http://localhost/v1/pois/osm:relation:7515426")

    assert response.status_code == 200

    resp = response.json()

    assert resp["id"] == "osm:relation:7515426"
    assert resp["name"] == "Louvre Museum"
    assert resp["local_name"] == "Musée du Louvre"
    assert resp["class_name"] == "museum"
    assert resp["subclass_name"] == "museum"
    assert resp["blocks"][1]["type"] == "phone"
    assert resp["blocks"][1]["url"] == "tel:+33140205229"
    assert resp["blocks"][1]["international_format"] == "+33 1 40 20 52 29"
    assert resp["blocks"][1]["local_format"] == "01 40 20 52 29"

def test_redirect_obsolete_address_with_lat_lon():
    client = TestClient(app)
    response = client.get(
        url=f"http://localhost/v1/places/addr:-1.12;45.6?lang=fr", allow_redirects=False
    )
    assert response.status_code == 303
    assert response.headers["location"] == "/v1/places/latlon:45.60000:-1.12000?lang=fr"

def test_directions_public_transport_restricted_areas():
    client = TestClient(app)

    # Paris - South Africa
    response = client.get(
        "http://localhost/v1/directions/2.3211757,48.8604893;22.1741215,-33.1565800",
        params={"language": "fr", "type": "publictransport"},
    )
    assert response.status_code == 422

    # Pekin
    response = client.get(
        "http://localhost/v1/directions/116.2945000,39.9148800;116.4998847,39.9091405",
        params={"language": "fr", "type": "publictransport"},
    )
    assert response.status_code == 422

    #  Washington - New York

def test_full(mock_external_requests):
    """
    Exhaustive test that checks all possible blocks
    """
    client = TestClient(app)
    response = client.get(url=f"http://localhost/v1/pois/osm:way:7777778?lang=es")

    assert response.status_code == 200

    resp = response.json()

    assert resp == {
        "type": "poi",
        "id": "osm:way:7777778",
        "name": "Fako Allo",
        "local_name": "Fake All",
        "class_name": "museum",
        "subclass_name": "museum",
        "geometry": {
            "coordinates": [2.3250037768187326, 48.86618482685007],
            "type": "Point",