Contact con2 = new Contact(FirstName = 'Test1', LastName = 'Test2',
                                MobilePhone='222-222-2222', Email='test1@test.com');
    insert con2;

   Contact con_a = [SELECT Id from contact where email = 'test1@test.com' LIMIT 1];

User signUpFormUser = [SELECT Id, FirstName FROM User WHERE FirstName = 'SignUpForm' LIMIT 1];
    System.runAs(signUpFormUser){
        Contact con_s = [SELECT Id from contact where email = 'test1@test.com' LIMIT 1];

    }