How to test test Web Services with Elixir?

We have a couple of REST APIs that need to be tested. APIs are owned by some other team. Currently, we use Node.js with Ava to test our external API.

We have recently started exploring Elixir as our scripting language. We would like to experiment with Elixir to test REST API. The question here is - how to test external web services/REST API with Elixir?

Every Google search around Elixir testing refers back to ExUnit which is basically for unit testing of Elixir apps. We don't have any app written in Elixir or in Phoenix.

All we want to do is to test API end-to-end. How to do that with Elixir? Which libraries to use? I know I can make network calls from my tests written in ExUnit and verify the API behavior, but not sure if it is the right way.

NOTE: We already have JMeter in place for load testing of API but we wish to keep functional testing separate from load testing due to complex workflows involved with API.