[COOK-1792] - add minitest-chef tests

* Create minitest-chef tests
* Also use better style (don't specify action if its the default, use
  5 digit modes, update notification syntax)

files/default/tests/minitest/support/helpers.rb

@@ -0,0 +1,24 @@
+#
+# Copyright 2012, Opscode, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+module Helpers
+  module Postfix
+    include MiniTest::Chef::Assertions
+    include MiniTest::Chef::Context
+    include MiniTest::Chef::Resources
+
+  end
+end