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sumit dsumit d 

Test class for controller of VF page

Hi All, 
          I have a controller class. How to write test class for the controller given below:-
public without sharing class MatchMakingController {
    private ApexPages.StandardController sctrl;
    rie__Registration__c regObj;
    public Map<String, List<SelectOption>> questionsMap {get;set;}
    private Map<String, String> questionAnswerMap;
    public Map<String, rie__Question__c> questionsSet {get;set;}
    public String Selectedvalues {get;set;}
    public String answeredQuestion{get; set;}
    public MatchMakingController(ApexPages.StandardController st){
        this.sctrl = st;
        this.regObj = (rie__Registration__c) st.getRecord();
        questionAnswerMap = new Map<String, String>();
    public pageReference getQuestionsList(){
       List<rie__Question__c> questionsList = new List<rie__Question__c>([Select id, rie__Question__c, 
                                                                          from rie__Question__c]);
        questionsMap = new Map<String, List<SelectOption>>();
        List<SelectOption> answerList = new List<SelectOption>();
        questionsSet = new Map<String, rie__Question__c>();
        if(questionsList != Null && questionsList.size() > 0){
            for(rie__Question__c questions : questionsList){
                answerList = new List<SelectOption>();
                    List<String> answerSplitList = new List<String>(questions.rie__Answers__c.split(','));
                    if(answerSplitList != Null && answerSplitList.size() > 0){
                        answerList.add(new SelectOption('None','--NONE--'));
                        for(String str : answerSplitList){
                           answerList.add(new SelectOption(str.trim(), str.trim())); 
                    questionsMap.put(questions.rie__Question__c.trim() , answerList);
                    questionsSet.put(questions.rie__Question__c.trim() , questions); 
        return null;
     public void populateAnswers()
        questionAnswerMap.put(answeredQuestion.trim(), Selectedvalues.trim());
    public pageReference submitAnswers(){
        List<rie__Registrant_Answer__c> existingRegAnswersList = new List<rie__Registrant_Answer__c>([Select id, rie__Question__c,
                                                                                                     rie__Answer__c, rie__Registration__c
                                                                                                     from rie__Registrant_Answer__c
                                                                                                     where rie__Registration__c =: regObj.Id]);
        Map<String, rie__Registrant_Answer__c> existingRegAnswersMap = new Map<String, rie__Registrant_Answer__c>();
        if(existingRegAnswersList != Null && existingRegAnswersList.size() > 0){
            for(rie__Registrant_Answer__c regAnswers : existingRegAnswersList){
                existingRegAnswersMap.put(regAnswers.rie__Question__c, regAnswers);
        List<rie__Registrant_Answer__c> regAnswerList = new List<rie__Registrant_Answer__c>();
        if(questionAnswerMap != Null && questionAnswerMap.size() > 0){
            for(String question : questionAnswerMap.keySet()){
                if(question != Null && question != 'None' &&
                   questionAnswerMap.get(question) != Null && 
                   questionAnswerMap.get(question) != 'None'){
                       if(existingRegAnswersMap != Null && 
                          existingRegAnswersMap.size() > 0 && 
                              rie__Registrant_Answer__c regAnswer = new rie__Registrant_Answer__c(Id = existingRegAnswersMap.get(question).Id);
                              regAnswer.rie__Question__c = questionsSet.get(question).Id;
                              regAnswer.rie__Answer__c = questionAnswerMap.get(question);
                              regAnswer.rie__Registration__c = regObj.Id;
                              rie__Registrant_Answer__c regAnswer = new rie__Registrant_Answer__c();
                              regAnswer.rie__Question__c = questionsSet.get(question).Id;
                              regAnswer.rie__Answer__c = questionAnswerMap.get(question);
                              regAnswer.rie__Registration__c = regObj.Id;
        if(regAnswerList != Null && regAnswerList.size() > 0){
            insert regAnswerList;
        PageReference cancel = sctrl.cancel(); 
        return cancel;
    public pageReference cancel(){
       PageReference cancel = sctrl.cancel(); 
       return cancel; 

​​​​​​​Can anyone help me with this?
ANUTEJANUTEJ (Salesforce Developers) 
Hi Sumit,

I will recommend you to start using trailhead to learn about test classes
1) https://trailhead.salesforce.com/modules/apex_testing

Also please check below post
1) https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_qs_test.htm
2) https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing_example.htm

Please check below post sample test class
1) http://amitsalesforce.blogspot.com/2015/06/best-practice-for-test-classes-sample.html

You write a test class for this the same way that you would any other:
- Set up some data for the controller to access (Account, Contact etc)
- Execute a method/methods:-
- Verify the behaviour with asserts.
Please follow below salesforce Best Practice for Test Classes :-

1. Test class must start with @isTest annotation if class class version is more than 25
2. Test environment support @testVisible , @testSetUp as well
3. Unit test is to test particular piece of code working properly or not .
4. Unit test method takes no argument ,commit no data to database ,send no email ,flagged with testMethod keyword .
5. To deploy to production at-least 75% code coverage is required
6. System.debug statement are not counted as a part of apex code limit.
7. Test method and test classes are not counted as a part of code limit
9. We should not focus on the  percentage of code coverage ,we should make sure that every use case should covered including positive, negative,bulk and single record .
Single Action -To verify that the the single record produces the correct an expected result .
Bulk action -Any apex record trigger ,class or extension must be invoked for 1-200 records .
Positive behavior : Test every expected behavior occurs through every expected permutation , i,e user filled out every correctly data and not go past the limit .
Negative Testcase :-Not to add future date , Not to specify negative amount.
Restricted User :-Test whether a user with restricted access used in your code .
10. Test class should be annotated with @isTest .
11 . @isTest annotation with test method  is equivalent to testMethod keyword .
12. Test method should static and no void return type .
13. Test class and method default access is private ,no matter to add access specifier .
14. classes with @isTest annotation can't be a interface or enum .
15. Test method code can't be invoked by non test request .
16. Stating with salesforce API 28.0 test method can not reside inside non test classes .
17. @Testvisible annotation to make visible private methods inside test classes.
18. Test method can not be used to test web-service call out . Please use call out mock .
19. You can't  send email from test method.
20.User, profile, organization, AsyncApexjob, Corntrigger, RecordType, ApexClass, ApexComponent ,ApexPage we can access without (seeAllData=true) .
21. SeeAllData=true will not work for API 23 version eailer .
22. Accessing static resource test records in test class e,g List<Account> accList=Test.loadData(Account,SobjectType,'ResourceName').
23. Create TestFactory class with @isTest annotation to exclude from organization code size limit .
24. @testSetup to create test records once in a method  and use in every test method in the test class .
25. We can run unit test by using Salesforce Standard UI,Force.com IDE ,Console ,API.
26. Maximum number of test classes run per 24 hour of period is  not grater of 500 or 10 multiplication of test classes of your organization.
27. As apex runs in system mode so the permission and record sharing are not taken into account . So we need to use system.runAs to enforce record sharing .
28. System.runAs will not enforce user permission or field level permission .
29. Every test to runAs count against the total number of DML issued in the process .

Please let us know if this post will help you