I have written a class(Please click on Link to view the class with red and blue to show the coverage)
https://docs.google.com/document/d/1i3OjMQ1sPvaV0TKaKIG0O8dfHb4ILTAPie_86F66KxM/edit?usp=sharing
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 :-


Test Class :-
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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