tree ed27d83bb200ba8398840ab2f37b1838b9153fa0
parent 25bd53e6bbe7ab7bf7f5be4b89c4db9b9b41f737
author Ray Milkey <ray@onlab.us> 1399399581 -0700
committer Ray Milkey <ray@onlab.us> 1399493287 -0700

Add a utility class checker for unit tests

Added a utility class checker and a unit test for it.  The
utility class checker makes sure that a utility class adheres
to the following rules:

    - the class must be declared final
    - the class must have only one constructor
    - the constructor must be private and inaccessible to callers
    - the class must have only static methods

Putting this checker in your unit tests will prevent future modifications
to your class that break the utility class assumptions.  The checker
also triggers an object creation through reflection that will
cause coverage events from the test.

Change-Id: Ia469908aefd5ad5c9a7387e6168576d50da01b3e