         Code.eval_string("<<a::size(b)>>", a: :a, b: :b)
       rescue
         _ ->
-          assert System.stacktrace |> Enum.any?(&(elem(&1, 0) == __MODULE__))
+          assert System.stacktrace() |> Enum.any?(&(elem(&1, 0) == __MODULE__))
       end
     end
   end

    end
  end

  contents = quote do
    defmodule CodeTest.Sample do
      def eval_quoted_info, do: {__MODULE__, __ENV__.file, __ENV__.line}
    end
  end

  Code.eval_quoted contents, [], file: "sample.ex", line: 13

  describe "eval_string/1-3" do
    test "correctly evaluates a string of code" do

  end

  test "require_file/1" do
    Code.require_file(fixture_path("code_sample.exs"))
    assert fixture_path("code_sample.exs") in Code.loaded_files()
    assert Code.require_file(fixture_path("code_sample.exs")) == nil

    Code.unload_files([fixture_path("code_sample.exs")])
    refute fixture_path("code_sample.exs") in Code.loaded_files()
    assert Code.require_file(fixture_path("code_sample.exs")) != nil
  end

