Exemplos de setup e argumentos

custom_test.exs

defmodule TesteTest do
  use ExUnit.Case

  setup_all do
    # we want all tests to use the same admin id
    admin_id = Ecto.UUID.generate()

    %{x: 1, admin_id: admin_id}
  end

  setup_all %{x: x} do
    %{x: x + 1, y: 3}
  end

  setup do
    %{now: NaiveDateTime.utc_now(), user_id: Ecto.UUID.generate()}
  end

  test "my test with no args" do
    assert 1 == 1
  end

  test "my test with args", %{x: x, y: y, now: now, user_id: user_id, admin_id: admin_id} do
    assert x == 2
    assert y == 3
    IO.inspect({now, user_id, admin_id}, label: "{now, user_id, admin_id}")
  end

  describe "my describe" do
    setup %{x: x, y: y} do
      %{x: x + 1, y: y + 2}
    end

    test "my test with args", %{x: x, y: y, now: now, user_id: user_id, admin_id: admin_id} do
      assert x == 3
      assert y == 5
      IO.inspect({now, user_id, admin_id}, label: "{now, user_id, admin_id}")
      # aqui o admin id é o mesmo que o do teste na L26, mas o user_id e o now, não
    end
  end
end