Ensure :inets is loaded before tests

Author: josevalim

lib/mix/test/mix/utils_test.exs

@@ -8,6 +8,8 @@ defmodule Mix.UtilsTest do
   doctest Mix.Utils
 
   setup do
+    Mix.ensure_application!(:inets)
+
     # Store state before test
     mix_home = System.get_env("MIX_HOME")