How to "focus" (à la RSpec) on one ExUnit test

test_helper.exs

ExUnit.configure(
  exclude: :test, include: :focus,
  # SNIP
)

your_test.exs

defmodule ExperimentalTest do
  use WisecashEx.ConnCase, async: true

  @tag :focus
  test "run this one" do
  end

  test "do not run this one" do
  end
end

@krisleech I looked for this a while back, but didn't find a solution at that time. It would be definitely still interesting, and maybe doable today!