Wonder if that'll work...

hypothesis.ex

  @doc """
  Provides a convenient macro that allows a test to be
  defined with a string. This macro automatically inserts
  the atom :ok as the last line of the test. That said,
  a passing test always returns :ok, but, more important,
  it forces Elixir to not tail call optimize the test and
  therefore avoiding hiding lines from the backtrace.

  ## Examples

      test "true is equal to true" do
        assert true == true
      end

  """
  defmacro test(message, contents) do
    contents =
      case contents do
        [do: block] ->
          quote do
            unquote(contents)
            :ok
          end
        _ ->
          quote do
            try(unquote(contents))
            :ok
          end
      end

    quote do
      message = unquote(message)
      message = if is_binary(message) do
        :"test #{message}"
      else
        :"test_#{message}"
      end
      __TESTS = __TESTS ++ [ unquote(message): fn -> unquote(Macro.escape contents)]
      def message, [], [], do: __TESTS[unquote(message)].()
    end
  end