Pytest Http functions

I would like to make unit test for this code via pytest. could you help me about it.

import logging
import json
import azure.functions as func
from azure.cosmos import CosmosClient
import fastapi
import os
app = fastapi.FastAPI()
client = CosmosClient.from_connection_string(os.environ["CosmosDBConnStr"])
database_name = "dmdb"
container_name = "DataContract"
database = client.get_database_client(database_name)
container = database.get_container_client(container_name)
@app.get("/marketplace/{V}")
async def get_data_by_version(V: str):
logging.info("all data contracts are coming....")
query = f''' SELECT c.name,c.version, c.Theme, c.title, c.description, udf.tsToDate(c._ts) as updated_at
FROM c 
WHERE c.version = '{V}'
ORDER BY c._ts DESC
OFFSET 0 LIMIT 20
'''
items = list(container.query_items(query, enable_cross_partition_query=True))
logging.info(f"items: {items}")
response_body = json.dumps(items)
return func.HttpResponse(body=response_body, mimetype="application/json")
@app.get("/marketplace/{V}/themes")
async def get_existing_themes_by_version(V: str):
query = f"SELECT c.Theme FROM c WHERE c.version = '{V}'"
items = list(container.query_items(query, enable_cross_partition_query=True))
unique_themes = list(set(item["Theme"] for item in items))
response_body = json.dumps(unique_themes)
return func.HttpResponse(body=response_body, mimetype="application/json")
@app.get("/marketplace/{V}/{id}")
async def get_data_by_version_and_id(V: str, id: str):
query = f"SELECT * FROM c WHERE c.version = '{V}' AND c.id = '{id}'"
items = list(container.query_items(query, enable_cross_partition_query=True))
if not items:
return func.HttpResponse(
f"No item with version '{V}' and id '{id}' was found",
status_code=404
)
response_body = json.dumps(items[0])
return func.HttpResponse(body=response_body, mimetype="application/json")
async def main(req: func.HttpRequest, context: func.Context) -> func.HttpResponse:
return await func.AsgiMiddleware(app).handle_async(req, context)

this is my code. how can I make a test with py test. i am getting this answers from the urls:

this is for all summmarize data:

http://localhost:7071/marketplace/V1
{"_HttpResponse__status_code":200,"_HttpResponse__mimetype":"application/json","_HttpResponse__charset":"utf-8","_HttpResponse__headers":{},"_HttpResponse__body":"[{\"name\": \"demo_contrac1\", \"version\": \"V1\", \"Theme\": \"Theme1\", \"title\": \"title1\", \"description\": \"test data contract management2\", \"updated_at\": \"2023-06-02T17:06:44.000Z\"}]"}

this is for themes:

http://localhost:7071/marketplace/V1/themes:
{"_HttpResponse__status_code":200,"_HttpResponse__mimetype":"application/json","_HttpResponse__charset":"utf-8","_HttpResponse__headers":{},"_HttpResponse__body":"[\"Theme1\"]"}

this is for get by id:

http://localhost:7071/marketplace/V1/123:
{"_HttpResponse__status_code":200,"_HttpResponse__mimetype":"application/json","_HttpResponse__charset":"utf-8","_HttpResponse__headers":{},"_HttpResponse__body":"{\"version\": \"V1\", \"name\": \"demo_contrac1\", \"title\": \"title1\", \"Theme\": \"Theme1\", \"description\": \"test data contract management2\", \"data owner\": \"j.jansen@amsterdam.nl\", \"confidentiality\": \"open\", \"table1\": {\"description:\": \"testen\", \"attribute_1\": {\"type\": \"int\", \"description:\": \"testen\", \"identifiability\": \"identifiable\"}}, \"id\": \"f895357f-efe0-4e64-a3b4-868f54e266c1\", \"_rid\": \"R69IAIfCVFQ7AAAAAAAAAA==\", \"_self\": \"dbs/R69IAA==/colls/R69IAIfCVFQ=/docs/R69IAIfCVFQ7AAAAAAAAAA==/\", \"_etag\": \"\\\"00000000-0000-0000-9574-9bf76b6101d9\\\"\", \"_attachments\": \"attachments/\", \"_ts\": 1685725604}"}

i could not manage it. functionaltest is OK . but i stuck at unit test.

>using the above Reference in commits I tried a sample trigger with Fast Api from this SO

def test_read_main(): response = client.get("/")
 assert response.status_code == 200 
 assert response.json() == {"msg": "Hello World"}

import json
from fastapi.testclient import TestClient
from main import app

client = TestClient(app)

def test_get_data_by_version():
    response = client.get("/marketplace/V1")
    assert response.status_code == 200
    assert response.headers["Content-Type"] == "application/json"
    data = response.json()
    assert len(data) == 1 
    assert data[0]["name"] == "demo_contrac1" 

Output:

• For more details refer this link.