How to test macros?

[i-n-g-m-a-r]

Kind of the same topic:

How to test a compile error?

You can eval/compile files at runtime. Just build a fixture and test against it. You should change raise "invalid" to something a bit more helpful tho. maybe: raise CompileError, description: "missing attribute", file: __ENV__.file, line: __ENV__.line defmodule MustBeValidTest do @fixture_file Path.join(["fixtures", "must_be_valid.ex"] @external_resource @fixture_file use ExUnit.Case test "CompileError" do assert_raise CompileError, "Some Helpful Info", fn() -> C…