Check in packages.

part9/tests/Example.elm

@@ -0,0 +1,10 @@
+module Example exposing (..)
+
+import Expect exposing (Expectation)
+import Fuzz exposing (Fuzzer, int, list, string)
+import Test exposing (..)
+
+
+suite : Test
+suite =
+    todo "Implement our first test. See http://package.elm-lang.org/packages/elm-community/elm-test/latest for how to do this!"