fixed #6696 -  Messages Unit Test Improved
fixed #6696 -  Messages Unit Test Improved

Messages unit test improved.
message types checked.
message service checked.

WebRota/primeng,sourabh8003/ultimate-primeNg,sourabh8003/ultimate-primeNg,WebRota/primeng,sourabh8003/ultimate-primeNg,primefaces/primeng,sourabh8003/ultimate-primeNg,primefaces/primeng,primefaces/primeng,WebRota/primeng,primefaces/primeng,WebRota/primeng