add unit tests (serialized object) (issue #7 )

This version introduces multiple enhancements:

allow to test creation object with serialized object

Details of additions/deletions below:
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Modified:   Test/ObjectTest.php
            -- Added --
                StdClass
            -- Updated --
                testCreationWithSerializedObject added test logic
                _exampleSerializedData changed object creation
                testDataValidation fixed test