If I understand you right you want to see the file that defines Demo.SomeTest in the error, and if I understand the docs correctly, that’ll be the case if you remove : location.

https://hexdocs.pm/elixir/Kernel.SpecialForms.html#quote/2-stacktrace-information

Hey guys, long time since this question was asked but I was just looking for the same answer and lucikly I found a workaround, in Elixir 1.18.3 (compiled with Erlang/OTP 27).

Following the recommendations from the Macros docs, this is how I’m able to get a stacktrace ending with the exact line where the assertion error is happening, in the CaseTemplate file:

defmodule Demo.TestSuite do
  use ExUnit.CaseTemplate

  using do
    quote do
      import Demo.TestSuite

      test "some test" do
        assert_eq(1, 2)
      end
    end
  end

  def assert_eq(a, b) do
    assert a == b
    true # WITHOUT this, it just shows the line in the test file at the top of the stacktrace
  end
end

I’m returning true because the function starts with assert_. I would return false if the function starts with refute_

I don’t know the exact reason of this behavior, I just noticed that if the last statement in the function is an assert or refute, the output shows only the line where the function is called, and not the line inside the function.