Hello, I’m trying to test some code that fires off multiple external API calls in parallel using Task.async_stream(). I’m using Mox to mock these external api calls like you see below. They work 95% of the time, but sometimes the second item’s api call fires off first, which results in a failed test. It seems that Mox cares about the order it receives its calls. Is there a way around this?

code:

Task.async_stream(employee_ids, fn emp_id -> EmployeeClient.get(emp_id) end)

Mocks:

expect(Mock, :get, fn "/employees/1" ->
  {:ok,
   %HTTPoison.Response{
    status_code: 200
   }}
end)

expect(Mock, :get, fn "/employees/2" ->
  {:ok,
   %HTTPoison.Response{
    status_code: 200
   }}
end)

Error msg:

** (FunctionClauseError) no function clause matching in anonymous fn/1 in ----edited out file names----: anonymous fn("/employees/2") in ----edited out file names-----

Thanks!