added hack to pass as pydantic model in fastapi, tests for fastapi

tests/test_fastapi_usage.py

@@ -0,0 +1,42 @@
+import json
+from typing import Optional
+
+import databases
+import pydantic
+import sqlalchemy
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+app = FastAPI()
+
+import orm
+from tests.settings import DATABASE_URL
+
+database = databases.Database(DATABASE_URL, force_rollback=True)
+metadata = sqlalchemy.MetaData()
+
+
+class Item(orm.Model):
+    __tablename__ = "users"
+    __metadata__ = metadata
+    __database__ = database
+
+    id = orm.Integer(primary_key=True)
+    name = orm.String(length=100)
+
+
+@app.post("/items/", response_model=Item)
+async def create_item(item: Item):
+    return item
+
+
+client = TestClient(app)
+
+
+def test_read_main():
+    response = client.post("/items/", json={'name': 'test', 'id': 1})
+    print(response.json())
+    assert response.status_code == 200
+    assert response.json() == {'name': 'test', 'id': 1}
+    item = Item(**response.json())
+    assert item.id == 1