import pytest from dirty_equals import IsDict, IsOneOf from fastapi import FastAPI, Query from fastapi._compat import PYDANTIC_V2 from fastapi.testclient import TestClient from pydantic import BaseModel, Field from typing_extensions import Annotated from tests.utils import needs_pydanticv2 app = FastAPI() # ===================================================================================== # Without aliases @app.get("/required-str") async def read_required_str(p: str): return {"p": p} class QueryModelRequiredStr(BaseModel): p: str @app.get("/model-required-str") async def read_model_required_str(p: Annotated[QueryModelRequiredStr, Query()]): return {"p": p.p} @pytest.mark.parametrize( "path", ["/required-str", "/model-required-str"], ) def test_required_str_schema(path: str): assert app.openapi()["paths"][path]["get"]["parameters"] == [ { "required": True, "schema": {"title": "P", "type": "string"}, "name": "p", "in": "query", } ] @pytest.mark.parametrize( "path", ["/required-str", "/model-required-str"], ) def test_required_str_missing(path: str): client = TestClient(app) response = client.get(path) assert response.status_code == 422 assert response.json() == IsDict( { "detail": [ { "type": "missing", "loc": ["query", "p"], "msg": "Field required", "input": IsOneOf(None, {}), } ] } ) | IsDict( # TODO: remove when deprecating Pydantic v1 { "detail": [ { "loc": ["query", "p"], "msg": "field required", "type": "value_error.missing", } ] } ) @pytest.mark.parametrize( "path", ["/required-str", "/model-required-str"], ) def test_required_str(path: str): client = TestClient(app) response = client.get(f"{path}?p=hello") assert response.status_code == 200 assert response.json() == {"p": "hello"} # ===================================================================================== # Alias @app.get("/required-alias") async def read_required_alias(p: Annotated[str, Query(alias="p_alias")]): return {"p": p} class QueryModelRequiredAlias(BaseModel): p: str = Field(alias="p_alias") @app.get("/model-required-alias") async def read_model_required_alias(p: Annotated[QueryModelRequiredAlias, Query()]): return {"p": p.p} # pragma: no cover @pytest.mark.parametrize( "path", ["/required-alias", "/model-required-alias"], ) def test_required_str_alias_schema(path: str): assert app.openapi()["paths"][path]["get"]["parameters"] == [ { "required": True, "schema": {"title": "P Alias", "type": "string"}, "name": "p_alias", "in": "query", } ] @pytest.mark.parametrize( "path", ["/required-alias", "/model-required-alias"], ) def test_required_alias_missing(path: str): client = TestClient(app) response = client.get(path) assert response.status_code == 422 assert response.json() == IsDict( { "detail": [ { "type": "missing", "loc": ["query", "p_alias"], "msg": "Field required", "input": IsOneOf(None, {}), } ] } ) | IsDict( # TODO: remove when deprecating Pydantic v1 { "detail": [ { "loc": ["query", "p_alias"], "msg": "field required", "type": "value_error.missing", } ] } ) @pytest.mark.parametrize( "path", [ "/required-alias", pytest.param( "/model-required-alias", marks=pytest.mark.xfail( raises=AssertionError, condition=PYDANTIC_V2, reason="Fails only with PDv2 models", strict=False, ), ), ], ) def test_required_alias_by_name(path: str): client = TestClient(app) response = client.get(f"{path}?p=hello") assert response.status_code == 422 assert response.json() == IsDict( { "detail": [ { "type": "missing", "loc": ["query", "p_alias"], "msg": "Field required", "input": IsOneOf( None, {"p": "hello"}, # /model-required-alias PDv2 fails here ), } ] } ) | IsDict( # TODO: remove when deprecating Pydantic v1 { "detail": [ { "loc": ["query", "p_alias"], "msg": "field required", "type": "value_error.missing", } ] } ) @pytest.mark.parametrize( "path", [ "/required-alias", pytest.param( "/model-required-alias", marks=pytest.mark.xfail(raises=AssertionError, strict=False), ), ], ) def test_required_alias_by_alias(path: str): client = TestClient(app) response = client.get(f"{path}?p_alias=hello") assert response.status_code == 200, ( # /model-required-alias fails here response.text ) assert response.json() == {"p": "hello"} # ===================================================================================== # Validation alias @app.get("/required-validation-alias") def read_required_validation_alias( p: Annotated[str, Query(validation_alias="p_val_alias")], ): return {"p": p} class QueryModelRequiredValidationAlias(BaseModel): p: str = Field(validation_alias="p_val_alias") @app.get("/model-required-validation-alias") def read_model_required_validation_alias( p: Annotated[QueryModelRequiredValidationAlias, Query()], ): return {"p": p.p} @needs_pydanticv2 @pytest.mark.xfail(raises=AssertionError, strict=False) @pytest.mark.parametrize( "path", ["/required-validation-alias", "/model-required-validation-alias"], ) def test_required_validation_alias_schema(path: str): assert app.openapi()["paths"][path]["get"]["parameters"] == [ { "required": True, "schema": {"title": "P Val Alias", "type": "string"}, "name": "p_val_alias", "in": "query", } ] @needs_pydanticv2 @pytest.mark.parametrize( "path", [ pytest.param( "/required-validation-alias", marks=pytest.mark.xfail(raises=AssertionError, strict=False), ), "/model-required-validation-alias", ], ) def test_required_validation_alias_missing(path: str): client = TestClient(app) response = client.get(path) assert response.status_code == 422 assert response.json() == { "detail": [ { "type": "missing", "loc": [ "query", "p_val_alias", # /required-validation-alias fails here ], "msg": "Field required", "input": IsOneOf(None, {}), } ] } @needs_pydanticv2 @pytest.mark.parametrize( "path", [ pytest.param( "/required-validation-alias", marks=pytest.mark.xfail(raises=AssertionError, strict=False), ), "/model-required-validation-alias", ], ) def test_required_validation_alias_by_name(path: str): client = TestClient(app) response = client.get(f"{path}?p=hello") assert response.status_code == 422, ( # /required-validation-alias fails here response.text ) assert response.json() == { "detail": [ { "type": "missing", "loc": ["query", "p_val_alias"], "msg": "Field required", "input": IsOneOf(None, {"p": "hello"}), } ] } @needs_pydanticv2 @pytest.mark.parametrize( "path", [ pytest.param( "/required-validation-alias", marks=pytest.mark.xfail(raises=AssertionError, strict=False), ), "/model-required-validation-alias", ], ) def test_required_validation_alias_by_validation_alias(path: str): client = TestClient(app) response = client.get(f"{path}?p_val_alias=hello") assert response.status_code == 200, ( # /required-validation-alias fails here response.text ) assert response.json() == {"p": "hello"} # ===================================================================================== # Alias and validation alias @app.get("/required-alias-and-validation-alias") def read_required_alias_and_validation_alias( p: Annotated[str, Query(alias="p_alias", validation_alias="p_val_alias")], ): return {"p": p} class QueryModelRequiredAliasAndValidationAlias(BaseModel): p: str = Field(alias="p_alias", validation_alias="p_val_alias") @app.get("/model-required-alias-and-validation-alias") def read_model_required_alias_and_validation_alias( p: Annotated[QueryModelRequiredAliasAndValidationAlias, Query()], ): return {"p": p.p} @needs_pydanticv2 @pytest.mark.xfail(raises=AssertionError, strict=False) @pytest.mark.parametrize( "path", [ "/required-alias-and-validation-alias", "/model-required-alias-and-validation-alias", ], ) def test_required_alias_and_validation_alias_schema(path: str): assert app.openapi()["paths"][path]["get"]["parameters"] == [ { "required": True, "schema": {"title": "P Val Alias", "type": "string"}, "name": "p_val_alias", "in": "query", } ] @needs_pydanticv2 @pytest.mark.parametrize( "path", [ pytest.param( "/required-alias-and-validation-alias", marks=pytest.mark.xfail(raises=AssertionError, strict=False), ), "/model-required-alias-and-validation-alias", ], ) def test_required_alias_and_validation_alias_missing(path: str): client = TestClient(app) response = client.get(path) assert response.status_code == 422 assert response.json() == { "detail": [ { "type": "missing", "loc": [ "query", "p_val_alias", # /required-alias-and-validation-alias fails here ], "msg": "Field required", "input": IsOneOf(None, {}), } ] } @needs_pydanticv2 @pytest.mark.xfail(raises=AssertionError, strict=False) @pytest.mark.parametrize( "path", [ "/required-alias-and-validation-alias", "/model-required-alias-and-validation-alias", ], ) def test_required_alias_and_validation_alias_by_name(path: str): client = TestClient(app) response = client.get(f"{path}?p=hello") assert response.status_code == 422 assert response.json() == { "detail": [ { "type": "missing", "loc": [ "query", "p_val_alias", # /required-alias-and-validation-alias fails here ], "msg": "Field required", "input": IsOneOf( # /model-alias-and-validation-alias fails here None, {"p": "hello"}, ), } ] } @needs_pydanticv2 @pytest.mark.xfail(raises=AssertionError, strict=False) @pytest.mark.parametrize( "path", [ "/required-alias-and-validation-alias", "/model-required-alias-and-validation-alias", ], ) def test_required_alias_and_validation_alias_by_alias(path: str): client = TestClient(app) response = client.get(f"{path}?p_alias=hello") assert ( response.status_code == 422 # /required-alias-and-validation-alias fails here ) assert response.json() == { "detail": [ { "type": "missing", "loc": ["query", "p_val_alias"], "msg": "Field required", "input": IsOneOf( # /model-alias-and-validation-alias fails here None, {"p_alias": "hello"}, ), } ] } @needs_pydanticv2 @pytest.mark.parametrize( "path", [ pytest.param( "/required-alias-and-validation-alias", marks=pytest.mark.xfail(raises=AssertionError, strict=False), ), "/model-required-alias-and-validation-alias", ], ) def test_required_alias_and_validation_alias_by_validation_alias(path: str): client = TestClient(app) response = client.get(f"{path}?p_val_alias=hello") assert response.status_code == 200, ( response.text # /required-alias-and-validation-alias fails here ) assert response.json() == {"p": "hello"}