@isTest
private class ViewParticipantsControllerTest {
    static testMethod void testMethod1() {
        TestDataUtility.CreatePIPolicyConfiguration('Contact');
        CampaignMember__c con = new CampaignMember__c();

        Test.startTest();
        ApexPages.StandardController sc = new ApexPages.StandardController(con);
        ViewParticipantsController vp = new ViewParticipantsController(sc);
        vp.viewContactId = '123';
        Test.stopTest();
    }
}