Need help on Apex Test Class for Wrapper Class

Question

Can someone help me with how to write a Test Class for the below Wrapper Class...

    public class OppRelatedSolutionsController {
    public List<WrapperClass> wrapList{get;set;}
    public List<Solution__c> selectedRecords{get;set;}
    public OppRelatedSolutionsController(ApexPages.StandardController stdController) {
        wrapList = new List<WrapperClass>();
        for(Solution__c solRecs : [SELECT Name, Amount__c, Expected_Revenue__c FROM Solution__c WHERE Opportunity__c = NULL]) {
            wrapList.add(new WrapperClass(solRecs));
        }
        if(wrapList.size() <= 0) {
            ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.INFO,'No Records found'));
        }
    }
    public pageReference saveRecords() {
        selectedRecords = new List<Solution__c>();
        for(WrapperClass wrapRecs : wrapList) {
            if(wrapRecs.selected == TRUE) {
                wrapRecs.sol.Opportunity__c = ApexPages.currentPage().getParameters().get('id');
                selectedRecords.add(wrapRecs.sol);
            }
        }
        update selectedRecords;
        if(selectedRecords.size() > 0) {
            pageReference ref = new PageReference('/'+ApexPages.currentPage().getParameters().get('id'));
            ref.setRedirect(true);
            return ref;
        }
        return null;
    }
    //Wrapper Class
    public class WrapperClass {
        public Solution__c sol{get;set;}
        public Boolean selected{get;set;}
        public WrapperClass(Solution__c s) {
            sol = s;
            selected = false;
        }
    }
}

I've gone through a few references and wrote Test Class but I was not able to cover all the code. Can someone help me with what needs to be changed in my test class.

@isTest
public class OppRelatedSolutionsControllerTest {
    public static testMethod void method1() {
        Solution__c solRec = new Solution__c();
        solRec.Name = 'Test Solution';
        solRec.Amount__c = 582;
        solRec.Expected_Revenue__c = 879;
        insert solRec;
        Test.startTest();
        List<WrapperClassTest> wrapList = new List<WrapperClassTest>();
        List<Solution__c> selectedRecords = new List<Solution__c>();
        for(Solution__c recs : [SELECT Name, Amount__c, Expected_Revenue__c FROM Solution__c WHERE Opportunity__c = NULL]) {
            wrapList.add(new WrapperClassTest(recs));
        }
        ApexPages.StandardController stdController = new ApexPages.StandardController(solRec);
        OppRelatedSolutionsController oppRel = new OppRelatedSolutionsController(stdController);
        oppRel.saveRecords();
        for(WrapperClassTest selWrap : wrapList) {
            if(selWrap.selected == TRUE) {
                selWrap.sol.Opportunity__c = ApexPages.currentPage().getParameters().get('id');
                selectedRecords.add(selWrap.sol);
            }
        }
        update selectedRecords;
        Test.stopTest();
    }
    public class WrapperClassTest {
        public Solution__c sol{get;set;}
        public Boolean selected{get;set;}
        public WrapperClassTest(Solution__c s) {
            sol =s;
            selected = false;
        }
    }
}

Answer 1

Can you please try the below test class

    @isTest
public class OppRelatedSolutionsControllerTest {
    public static testMethod void method1() {
        Solution__c solRec = new Solution__c();
        solRec.Name = 'Test Solution';
        solRec.Amount__c = 582;
        solRec.Expected_Revenue__c = 879;
        insert solRec;
        Test.startTest();
        ApexPages.StandardController stdController = new ApexPages.StandardController(solRec);
        OppRelatedSolutionsController oppRel = new OppRelatedSolutionsController(stdController);
        oppRel.saveRecords();
        Test.stopTest();
    }
}