dependency injection makes testing easier

cool.py

#  have a function to create the client so you can dependcy in ject it into the exceite function
#  pass in host, port and region so your tests can override these
def create_es_client(host, port, region):
    return Elasticsearch(
        hosts=[{"host": host, "port": port}],
        http_auth=BotoAWSRequestsAuth(
            aws_host=host, aws_region=region, aws_service="es"
        ),
        use_ssl=True,
        verify_certs=True,
        connection_class=RequestsHttpConnection,
    )

# have a small function that exceutes your query
# pass in the es_client and the query so the values can be overidden in tests
def execute_es_query(es_client, query):
    return query.using(es_client).execute(ignore_cache=True).to_dict()

test_cool.py

# integration test.
def test_execute_query(self):
    test_extent = {
        "ymin": -105.2,
        "ymax": -105.1,
        "xmin": 35.7,
        "xmax": 35.8,
    }
    test_tenant = "DEV"
    test_timestamp = 12345
    
#     use your normal create query function. this will test you real query
    query = create_es_query(test_extent, test_tenant, test_timestamp)
  
#   create a client that points to localstack just for testing
# if running tests inside a docker container, set the docker envar to ES_ENDPOINT=localstack
# if running the tests on your host machine, set envar to localhost when running tests (ES_ENDPOINT=localhost PORT=4571 pytest -rA tests/integration)
    client = create_es_client(
        os.environ["ES_ENPOINT"],
        os.environ["PORT"],
        os.environ["AWS_REGION"])
    result = execute_es_query(client, query)
    print(str(result))