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penchala rajupenchala raju 

. How to write test class for custom Setting values

NagaNaga (Salesforce Developers) 
 ​Hi Raju,User-added image

Best Regards
Naga Kiran
rajesh gandirajesh gandi
below urls are help you
http://salesforce.stackexchange.com/questions/12939/test-class-with-custom-setting
http://salesforce.stackexchange.com/questions/9565/how-to-get-custom-settings-in-apex-test-code

please select this answer is  useful to u