Cleaning up and writing tests

game/spec/stdout_helper.rb

@@ -0,0 +1,12 @@
+# If you are getting an error `uninitialized constant StringIO` make sure that
+# your code is in an `it` block.
+
+# Helper that captures STDOUT.
+def capture_stdout
+  output = StringIO.new
+  $stdout = output
+  yield
+  output.string
+ensure
+  $stdout = STDOUT
+end