from typing import List from dirty_equals import IsDict from fastapi import Depends, FastAPI from fastapi.testclient import TestClient from pydantic import BaseModel app = FastAPI() client = TestClient(app) class Item(BaseModel): data: str def duplicate_dependency(item: Item): return item def dependency(item2: Item): return item2 def sub_duplicate_dependency( item: Item, sub_item: Item = Depends(duplicate_dependency) ): return [item, sub_item] @app.post("/with-duplicates") async def with_duplicates(item: Item, item2: Item = Depends(duplicate_dependency)): return [item, item2] @app.post("/no-duplicates") async def no_duplicates(item: Item, item2: Item = Depends(dependency)): return [item, item2] @app.post("/with-duplicates-sub") async def no_duplicates_sub( item: Item, sub_items: List[Item] = Depends(sub_duplicate_dependency) ): return [item, sub_items] def test_no_duplicates_invalid(): response = client.post("/no-duplicates", json={"item": {"data": "myitem"}}) assert response.status_code == 422, response.text assert response.json() == IsDict( { "detail": [ { "type": "missing", "loc": ["body", "item2"], "msg": "Field required", "input": None, } ] } ) | IsDict( # TODO: remove when deprecating Pydantic v1 { "detail": [ { "loc": ["body", "item2"], "msg": "field required", "type": "value_error.missing", } ] } ) def test_no_duplicates(): response = client.post( "/no-duplicates", json={"item": {"data": "myitem"}, "item2": {"data": "myitem2"}}, ) assert response.status_code == 200, response.text assert response.json() == [{"data": "myitem"}, {"data": "myitem2"}] def test_duplicates(): response = client.post("/with-duplicates", json={"data": "myitem"}) assert response.status_code == 200, response.text assert response.json() == [{"data": "myitem"}, {"data": "myitem"}] def test_sub_duplicates(): response = client.post("/with-duplicates-sub", json={"data": "myitem"}) assert response.status_code == 200, response.text assert response.json() == [ {"data": "myitem"}, [{"data": "myitem"}, {"data": "myitem"}], ] def test_openapi_schema(): response = client.get("/openapi.json") assert response.status_code == 200, response.text assert response.json() == { "openapi": "3.1.0", "info": {"title": "FastAPI", "version": "0.1.0"}, "paths": { "/with-duplicates": { "post": { "summary": "With Duplicates", "operationId": "with_duplicates_with_duplicates_post", "requestBody": { "content": { "application/json": { "schema": {"$ref": "#/components/schemas/Item"} } }, "required": True, }, "responses": { "200": { "description": "Successful Response", "content": {"application/json": {"schema": {}}}, }, "422": { "description": "Validation Error", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/HTTPValidationError" } } }, }, }, } }, "/no-duplicates": { "post": { "summary": "No Duplicates", "operationId": "no_duplicates_no_duplicates_post", "requestBody": { "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Body_no_duplicates_no_duplicates_post" } } }, "required": True, }, "responses": { "200": { "description": "Successful Response", "content": {"application/json": {"schema": {}}}, }, "422": { "description": "Validation Error", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/HTTPValidationError" } } }, }, }, } }, "/with-duplicates-sub": { "post": { "summary": "No Duplicates Sub", "operationId": "no_duplicates_sub_with_duplicates_sub_post", "requestBody": { "content": { "application/json": { "schema": {"$ref": "#/components/schemas/Item"} } }, "required": True, }, "responses": { "200": { "description": "Successful Response", "content": {"application/json": {"schema": {}}}, }, "422": { "description": "Validation Error", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/HTTPValidationError" } } }, }, }, } }, }, "components": { "schemas": { "Body_no_duplicates_no_duplicates_post": { "title": "Body_no_duplicates_no_duplicates_post", "required": ["item", "item2"], "type": "object", "properties": { "item": {"$ref": "#/components/schemas/Item"}, "item2": {"$ref": "#/components/schemas/Item"}, }, }, "HTTPValidationError": { "title": "HTTPValidationError", "type": "object", "properties": { "detail": { "title": "Detail", "type": "array", "items": {"$ref": "#/components/schemas/ValidationError"}, } }, }, "Item": { "title": "Item", "required": ["data"], "type": "object", "properties": {"data": {"title": "Data", "type": "string"}}, }, "ValidationError": { "title": "ValidationError", "required": ["loc", "msg", "type"], "type": "object", "properties": { "loc": { "title": "Location", "type": "array", "items": { "anyOf": [{"type": "string"}, {"type": "integer"}] }, }, "msg": {"title": "Message", "type": "string"}, "type": {"title": "Error Type", "type": "string"}, }, }, } }, }