How to spawn a cowboy server in a test?

Questions / Help
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1

Background

I have a specific test where I need to spawn a cowboy server listening on port 8082 that returns some static responses.

Objective

Normally I would spin up a cowboy process in my application.ex file like this:

   def start(_type, args) do
     children = children([{Cowboy, scheme: :http, plug: MyServer, options: [port: 8082]}])

     opts = [strategy: :one_for_one, name: MyApp.Supervisor]
     Supervisor.start_link(children, opts)
   end

But the code I am working on is not an application, so I can’t do that.

My objective is to use the setup_all callback of ExUnit to do this, however I don’t know how to do it or if it is possible.

Questions

  1. How can I start a cowboy server in ExUnit?
2

Are you familiar with bypass? Use it directly if you can, but if you have some unique requirements that preclude that, then its source contains techniques you could customize.

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