Cannot build test data for survey objects

Hello All,

I activate survey in my org and now I want to measure NPS depends on these surveys.

So I built a class to measure NPS for whole company, division, NPS based governorate and more.. 

And when I tried to built Test class to deploy it to production it restricted me to build test data on all survey objects,

And always give me the error field is not writeable for each field.  

So now I can't deploy it to prod without the test class.

I would be grateful for any solutions :)

Code:

         // insert new Survey
        List<Survey> SurveyTest = new List<Survey>();
        SurveyTest.add(new Survey(Name = 'testSurvey1'));
        SurveyTest.add(new Survey(Name = 'testSurvey2'));
        // insert new SurveyInvitation
        List<SurveyInvitation> SurveyInvitationTest = new List<SurveyInvitation>();
        SurveyInvitationTest.add(new SurveyInvitation(Name = 'surveyInvitationTest1', SurveyId = SurveyTest[0].Id, ContactId = testContacts[0].Id, ParticipantId = testContacts[0].Id));
        SurveyInvitationTest.add(new SurveyInvitation(Name = 'surveyInvitationTest2', SurveyId = SurveyTest[1].Id, ContactId = testContacts[1].Id, ParticipantId = testContacts[1].Id));
        // insert new SurveyQuestion
        List<SurveyQuestion> SurveyQuestionTest = new List<SurveyQuestion>();
        SurveyQuestionTest.add(new SurveyQuestion(Name = 'SurveyQuestionTestNPS1', Type = 'NPS'));
        SurveyQuestionTest.add(new SurveyQuestion(Name = 'SurveyQuestionTestNPS2', Type = 'NPS'));        
        // insert new SurveyQuestionResponse
        List<SurveyQuestionResponse> SurveyQuestionResponseTest = new List<SurveyQuestionResponse>();
        SurveyQuestionResponseTest.add(new SurveyQuestionResponse(QuestionId = SurveyQuestionTest[0].Id, NumberValue = 9));
        SurveyQuestionResponseTest.add(new SurveyQuestionResponse(QuestionId = SurveyQuestionTest[1].Id, NumberValue = 10));
        // insert new SurveySubject
        List<SurveySubject> SurveySubjectTest = new List<SurveySubject>();
        SurveySubjectTest.add(new SurveySubject(Name = 'SurveySubjectTest1', SurveyInvitationId = SurveyInvitationTest[0].Id, ParentId = SurveyInvitationTest[0].Id, SubjectId = testAccounts[0].Id, SurveyId = SurveyTest[0].Id, SubjectEntityType = 'Account'));
        SurveySubjectTest.add(new SurveySubject(Name = 'SurveySubjectTest2', SurveyInvitationId = SurveyInvitationTest[1].Id, ParentId = SurveyInvitationTest[1].Id, SubjectId = testCase[0].Id, SurveyId = SurveyTest[1].Id, SubjectEntityType = 'Case'));       

#Apex #Test Classes #Salesforce Surveys