Hello everyone,

I need a hand getting 100% code coverage for one of my Apex Classes

The Apex Class:

public class avgCES{

    private final Case cas;

    public double avrgCES{public get; public set;}
    public string CES_Colour{public get; public set;}
    public double count{public get; public set;}

    public avgCES(ApexPages.StandardController controller) {

    this.cas = (Case)Controller.getRecord();
    

if(cas.account.id!=NULL){
    
    List <case> allCase=[Select How_easy_was_it_to_get_the_help_you_need__c from case where accountid=:cas.account.id and How_easy_was_it_to_get_the_help_you_need__c!=NULL];

    double d=0.0;
    integer count=0;
    if(allCase.size()>0){
    for(case c: allCase)
    {
     d+=c.How_easy_was_it_to_get_the_help_you_need__c;
     count++;
    }
    }
    
    
    if(count>0)
    {
        avrgCES=d/count;
    }
    else
    {
        avrgCES=0;
        CES_Colour='Grey';
    }
    
    if(avrgCES<6)
    {
        CES_Colour='Red';
    }
    else if(avrgCES>=6 && avrgCES <=8 )
    {
        CES_Colour='Yellow';
    }
    else
    {
        CES_Colour='Green';
    }
}
}
}

The Test Class

@isTest
public class avgCES_test{
    public static testMethod void testAvgCES() {
        Account a = new Account(name='TestAcc',Reseller_Id__c=12345,Virtualisation_Id__c=1);
        insert a;
        Case c = new Case(subject='Test Case',Account=a,How_easy_was_it_to_get_the_help_you_need__c=6);
        Case c2 = new Case(subject='Test Case2',Account=a,How_easy_was_it_to_get_the_help_you_need__c=5);
        insert c;
        insert c2;
        ApexPages.StandardController sc = new ApexPages.standardController(c);
        avgCES testme = new avgCES(sc);
        testme.avrgCES=5.5;
        testme.CES_Colour='Red';
        
        system.assertEquals(5.5, testme.avrgCES);
        system.assertEquals('Red', testme.CES_Colour);
  }
    
    public static testMethod void testAvgCES2() {
        Account a = new Account(name='TestAcc',Reseller_Id__c=12345,Virtualisation_Id__c=1);
        insert a;
        Case c = new Case(subject='Test Case',Account=a,How_easy_was_it_to_get_the_help_you_need__c=10);
        Case c2 = new Case(subject='Test Case2',Account=a,How_easy_was_it_to_get_the_help_you_need__c=8);
        insert c;
        insert c2;
        ApexPages.StandardController sc2 = new ApexPages.standardController(c);
        avgCES testme = new avgCES(sc2);
        testme.avrgCES=9;
        
        system.assertEquals(9, testme.avrgCES);
        system.assertEquals('Green', testme.CES_Colour);
  }
    
  public static testMethod void testAvgCES3() {
        Account a = new Account(name='TestAcc',Reseller_Id__c=12345,Virtualisation_Id__c=1);
        insert a;
        Case c = new Case(subject='Test Case',Account=a,How_easy_was_it_to_get_the_help_you_need__c=7);
        Case c2 = new Case(subject='Test Case2',Account=a,How_easy_was_it_to_get_the_help_you_need__c=8);
        insert c;
        insert c2;
        ApexPages.StandardController sc3 = new ApexPages.standardController(c);
        avgCES testme = new avgCES(sc3);
        testme.avrgCES=7.5;
    
        testme.CES_Colour='Yellow';
        system.assertEquals(7.5, testme.avrgCES);
        system.assertEquals('Yellow', testme.CES_Colour);
  }
    
  public static testMethod void testAvgCES4() {
        Account a = new Account(name='TestAcc',Reseller_Id__c=12345,Virtualisation_Id__c=1);
        insert a;
        Case c = new Case(subject='Test Case',Account=a,How_easy_was_it_to_get_the_help_you_need__c=NULL);
        Case c2 = new Case(subject='Test Case2',Account=a,How_easy_was_it_to_get_the_help_you_need__c=NULL);
        insert c;
        insert c2;
        ApexPages.StandardController sc4 = new ApexPages.standardController(c);
        avgCES testme = new avgCES(sc4);
        testme.avrgCES=0;
        testme.CES_Colour='Grey';
        system.assertEquals(0, testme.avrgCES);
        system.assertEquals('Grey', testme.CES_Colour);
  }
    

}

Im still fairly new to Apex and would appreciate any and all help with this.

Thanks in advance!