Testing

You can test Quart-Schema validated routes the same way you’d test normal Quart routes (everything works the same). In addition Quart-Schema allows Pydantic models, or dataclasses to be sent via the test client as json or form data, for example,

attrsdataclassesattrspydantic

from attrs import define

@define
class Details:
    name: str
    age: int | None = None

@pytest.mark.asyncio
async def test_send() -> None:
    ...
    test_client = app.test_client()
    response = await test_client.post("/", json=Details(name="bob", age=2))
    # Or
    response = await test_client.post("/", form=Details(name="bob", age=2))

Hypothesis testing

It can be difficult to write test cases for complex structures that cover all the edge cases (data state space). Hypothesis is a library that can generate data for you that covers the edge cases. As Hypothesis can infer how to construct type-annotated classes and Pydantic ships a Hypothesis plugin for specific types it is possible to test Quart-Schema routes with Hypothesis generated data, for example,

from hypothesis import given, strategies as st
from dataclasses import dataclass
# Other imports not shown

@dataclass
class Details:
    name: str
    age: int | None = None

@given(st.builds(Details))
@pytest.mark.asyncio
async def test_index(data: Details) -> None:
    app = Quart(__name__)
    QuartSchema(app)

    @app.route("/", methods=["POST"])
    @validate_request(Details)
    async def index(data: Details) -> Any:
        return data

    test_client = app.test_client()
    response = await test_client.post("/", json=data)
    assert response.status_code == 200

Note

Hypothesis must be installed seperately.