test_propagates_pydantic2_model_config() — fastapi Function Reference

Architecture documentation for the test_propagates_pydantic2_model_config() function in test_compat.py from the fastapi codebase.

Function python FastAPI Applications

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FastAPI→ Applications→ test_propagates_pydantic2_model_config() — fastapi Function Reference

Dependency Diagram

graph TD
  b9b927bb_06fb_ce23_18d4_d959031c8e32["test_propagates_pydantic2_model_config()"]
  d8f09690_317a_a71d_db2f_7a9171e4e6fd["test_compat.py"]
  b9b927bb_06fb_ce23_18d4_d959031c8e32 -->|defined in| d8f09690_317a_a71d_db2f_7a9171e4e6fd
  style b9b927bb_06fb_ce23_18d4_d959031c8e32 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

tests/test_compat.py lines 43–84

def test_propagates_pydantic2_model_config():
    app = FastAPI()

    class Missing:
        def __bool__(self):
            return False

    class EmbeddedModel(BaseModel):
        model_config = ConfigDict(arbitrary_types_allowed=True)
        value: Union[str, Missing] = Missing()

    class Model(BaseModel):
        model_config = ConfigDict(
            arbitrary_types_allowed=True,
        )
        value: Union[str, Missing] = Missing()
        embedded_model: EmbeddedModel = EmbeddedModel()

    @app.post("/")
    def foo(req: Model) -> dict[str, Union[str, None]]:
        return {
            "value": req.value or None,
            "embedded_value": req.embedded_model.value or None,
        }

    client = TestClient(app)

    response = client.post("/", json={})
    assert response.status_code == 200, response.text
    assert response.json() == {
        "value": None,
        "embedded_value": None,
    }

    response2 = client.post(
        "/", json={"value": "foo", "embedded_model": {"value": "bar"}}
    )
    assert response2.status_code == 200, response2.text
    assert response2.json() == {
        "value": "foo",
        "embedded_value": "bar",
    }