Day 4; run watches in a seperate process to allow continuation after crashes

lib/mix_tasks.ex

@@ -5,6 +5,7 @@ defmodule Mix.Tasks.Aoc do
   defp module(1), do: Aoc2023.Day1
   defp module(2), do: Aoc2023.Day2
   defp module(3), do: Aoc2023.Day3
+  defp module(4), do: Aoc2023.Day4
   # [MODULE INSERTION POINT]  
 
   defp base_dir(), do: System.get_env("AOC_BASE")
@@ -102,7 +103,7 @@ defmodule Mix.Tasks.Aoc do
   end
 
   defp run(day, ["test", "watch"]) do
-    {:ok, pid} = Mix.Tasks.Aoc.Watcher.start_link({[dirs: ["lib/", "test/day#{day}/"]], self()})
+    {:ok, pid} = Mix.Tasks.Aoc.Watcher.start_link({[dirs: ["lib/", "tests/day#{day}/"]], self()})
     Process.monitor(pid)
     loop = fn (loop) ->
       IO.puts(IO.ANSI.clear() <> IO.ANSI.cursor(0, 0))
@@ -112,7 +113,9 @@ defmodule Mix.Tasks.Aoc do
       :code.purge(Aoc2023.Common)
       :code.load_file(module(day))
       :code.load_file(Aoc2023.Common)
-      run(day, ["test"])
+      spawn fn ->
+        run(day, ["test"])
+      end
       receive do
         :update -> loop.(loop)
         {:DOWN, _, :process, ^pid, _} -> nil
@@ -129,8 +132,6 @@ defmodule Mix.Tasks.Aoc do
     |> Enum.map(&test(day, &1))
     |> Enum.map(fn {test, input, p1e, p2e} ->
       parsed = mod.parse(input)
-      p1 = mod.part1(parsed)
-      p2 = mod.part2(parsed)
 
       result = fn (part, got, expected) ->
         cond do
@@ -142,8 +143,8 @@ defmodule Mix.Tasks.Aoc do
         end
       end
 
-      result.(1, p1, p1e)
-      result.(2, p2, p2e)
+      result.(1, mod.part1(parsed), p1e)
+      result.(2, mod.part2(parsed), p2e)
     end)
   end