     }
   end
 
-  defp valid_configuration do
-    default_configuration
+  defp valid_configuration() do
+    default_configuration()
     |> Map.put(:active, true)
     |> Map.put(:push_api_key, "00000000-0000-0000-0000-000000000000")
     |> Map.put(:valid, true)
   end
 
-  defp valid_heroku_configuration do
-    valid_configuration
+  defp valid_heroku_configuration() do
+    valid_configuration()
     |> Map.put(:running_in_container, true)
     |> Map.put(:log, "stdout")
   end

  end

  test "default configuration" do
    assert default_configuration == init_config
  end

  describe "using the application environment" do

    end

    test ":running_in_container and :log" do
      assert valid_heroku_configuration() == init_config()
      assert "true" == System.get_env("APPSIGNAL_RUNNING_IN_CONTAINER")
      assert "stdout" == System.get_env("APPSIGNAL_LOG")
    end
