Unit test class reference issue in Objective C

I am working on multi target ios project in objective C. Some swift classes are also there by Bridging-header. There is a Unit test target for main target as Host application. I have to do unit test for another particular target [Say, SecondaryTarget]. I have added the "Unit test target" by Edit Scheme > Test to enable unit test.
I am trying to import a existing class and do the unit test. But I am always getting reference issue [file not found] in test classes, while importing the classes.
Unit test class reference issue in Objective C
 
 
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