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Rst123Rst123 

Test class Coverage issue ...

I have written a test class for a Apex class but its not covering and showing only 5% coverage...
Can you help me in getting code coverage :-
I have highlighted the link of my CLASS below
@isTest
private class TestABC {

    static testMethod void specialReplaceAmpersandTest() {
        String testString = 'test&replacement';
        String resultString = 'test%26replacement';
        System.assertEquals(Utility.specialReplaceAmpersand(testString),resultString);
      
    }
  
    static testMethod void urlEncodeTest()
    {
        String testString = 'test&url%encode%test';
        String resultString = 'test%26url%25encode%25test';
      
        System.assertEquals(Utility.urlEncode(testString),resultString);
    }
  
    static testMethod void differentiateListsTest()
    {
        List<String> masterList = new List<String>();
        masterList.add('Element1');
        masterList.add('Element2');
        masterList.add('Element3');
        List<String> childList = new List<String>();
        childList.add('Element2');
        List<String> resultList = new List<String>();
        resultList.add('Element1');
        resultList.add('Element3');
      
        System.assertEquals(Utility.differentiateLists(masterList,childList),resultList);
      
    }
  
    static testMethod void substractSetTest()
    {
        Set<String> set1 = new Set<String>();
        set1.add('Element1');
        set1.add('Element2');
        set1.add('Element3');
        Set<String> set2 = new Set<String>();
        set2.add('Element2');
        Set<String> resultSet = new Set<String>();
        resultSet.add('Element1');
        resultSet.add('Element3');
        System.assertEquals(Utility.SubstractSet(set1,set2), resultSet);
    }
 
    Static testMethod void checkForNullTest()
    {
        String str1 = 'testStr1';
        String str2 = 'testStr2';
        String str3;
        Decimal decVal1 = 10.0;
        Decimal decVal2 = 11.0;
        Decimal decVal3;
        Integer intVal1 = 10;
        Integer intVal2 = 11;
        Integer intVal3;
        Boolean bool1 = true;
        Boolean bool2 = false;
        String str4 = 'T' ;
        Date dt1 = system.today();
        Date dt2 = system.today() + 1;
        Date dt3;
        DateTime datTime1 = DateTime.now();
        DateTime datTime2 = DateTime.now() + 1;
        DateTime datTime3;
      
        system.assertEquals(Utility.checkForNull(str1,str2),str2);
        system.assertEquals(Utility.checkForNull(str1,str3),str1);
        system.assertEquals(Utility.checkForNull(decVal1,decVal2),decVal2);
        system.assertEquals(Utility.checkForNull(decVal1,decVal3),decVal1);
        system.assertEquals(Utility.checkForNull(intVal1,intVal2),intVal2);
        system.assertEquals(Utility.checkForNull(intVal1,intVal3),intVal1);
        system.assertEquals(Utility.checkForNull(bool1,bool2),bool2);
        system.assertEquals(Utility.checkForNull(bool1,str4),bool1);
        system.assertEquals(Utility.checkForNull(dt1,dt2),dt2);
        system.assertEquals(Utility.checkForNull(dt1,dt3),dt1);
        system.assertEquals(Utility.checkForNull(datTime1,datTime2),datTime2);
        system.assertEquals(Utility.checkForNull(datTime1,datTime3),datTime1);
      
    }
  
   static testMethod void getPhoneEscapedTest()
   {
    String FullNumber = '203-000-007x2345';
    String phoneNumber = '203000007';
    String extension = '2345';
    System.assertEquals(Utility.getPhoneEscaped(FullNumber,true),phoneNumber);
    System.assertEquals(Utility.getPhoneEscaped(FullNumber,false),extension);
   }
 
   static testMethod void testEncrypt()
   {
    String Value = '003M0000008tN30';
    String Test = 'JiW2d9ABjkbJ15c0jFQg7g%3D%3D';
    System.assertEquals(Utility.EncryptId(Value),Test);
   }
 
   static testMethod void testEncryptIdB64()
   {  
    String Value = '003M0000008tN30';
    String Test = 'JiW2d9ABjkbJ15c0jFQg7g==';
    System.assertEquals(Utility.EncryptIdB64(Value),Test);
   }
 
   static testMethod void testsaveMultipleLogsToDataStore()
   {  
         integer TEST_SIZE = 5 ;
         String [] idList = new String[0] ;
         String [] strList = new String[0] ;
         List<Account> aList = new List<Account>() ;
         for (integer i=0 ;i < TEST_SIZE ;i++){
            Account testAccount = new Account(Name='Test Account',Request_Merge__c = TRUE,Account_Merge_Details__c='Test Detail');
            aList.add(testAccount) ;
         }
         insert aList;
       
         for (Account a:aList)
            idList.add(a.Id) ;
       
         for (integer i=0 ;i < TEST_SIZE ;i++){
            String str = '' ;
            for (integer k=0 ; k < 700;k++)
                 str+='AAAAAAAAAAAA ' ;
            System.debug('--- ' + str.length());   
            strList.add(str) ;
         }
        Test.startTest() ;
        System.debug('ID List size : ' + idList.size() + '  StringList size:  ' + strList.size());
        Utility.saveMultipleLogsToDataStore(idList, 'Test', strList) ;
        Integer count = [select count() from Data_Store__c where Parent_Object__c = 'Test'] ;
        System.assertEquals(TEST_SIZE*2, count) ; // String is going to be split into 2
        Test.stopTest();
      
   }
 
   static testMethod void testcheckLimits(){
         integer TEST_SIZE = 1 ;
         List<Account> aList = new List<Account>() ;
         for (integer i=0 ;i < TEST_SIZE ;i++){
            Account testAccount = new Account(Name='Test Account'+i,Request_Merge__c = TRUE,Account_Merge_Details__c='Test Detail'+i);
            aList.add(testAccount) ;
         }
         insert aList;
       
         String debugX = '******* Test log' ;
       
         debugX = Utility.checkLimits(debugX) ;
                
         System.assertEquals(debugX.indexof('RESOURCE USAGE')>0, true) ;
              
   }
}


APEX CLASS :
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Vinita_SFDCVinita_SFDC
Hello,

Can you share your code with colors red and blue. The lines which haven't been covered will be shown in Red in developer console and covered one in blue color.
Rst123Rst123
Thanks for your reply!!!

Please find the code in Red at below link

https://docs.google.com/document/d/1i3OjMQ1sPvaV0TKaKIG0O8dfHb4ILTAPie_86F66KxM/edit?usp=sharing

https://docs.google.com/document/d/1i3OjMQ1sPvaV0TKaKIG0O8dfHb4ILTAPie_86F66KxM/edit?usp=sharing