Task two is done

Author: jamiecurle

mix.exs

@@ -14,5 +14,5 @@ defmodule Hackerank.MixProject do
   end
 
   defp elixirc_paths(:test), do: ["tests", "w1", "w2", "w3", "w4", "w5"]
-  defp elixirc_paths(_), do: ["lib"]
+  defp elixirc_paths(_), do: ["lib", "w1", "w2", "w3", "w4", "w5"]
 end

test/test_helper.exs

@@ -36,8 +36,7 @@ defmodule Hackerrank.Test.Helper do
     expected = exp_fn.(expected)
 
     # and done
-    # [args, expected]
-    {tc, args, expected}
+    [args, expected]
   end
 
 end

w1/plus_minus.ex

@@ -9,6 +9,7 @@ defmodule Hackerrank.W1.PlusMinus do
     |> List.to_string()
   end
 
+  @spec challenge([integer()]) :: [String.t()]
   def challenge(arr) do
 
     # length is accessed a few times

w1/plus_minus_test.exs

@@ -8,8 +8,8 @@ defmodule Hackerank.W1.PlusMinusTest do
 
   test "run the tests" do
     Helper.test_all(@pattern, &parse_args/1, &parse_expected/1 )
-    |> Enum.each(fn {_label, args, expected} ->
-      assert PlusMinus.challenge(args) == expected
+    |> Enum.each(fn [args, expected] ->
+       assert PlusMinus.challenge(args) == expected
     end)
   end