My class 0 code coverage,urgent please help on this

my class:
public with sharing class GE_LGT_EM_ApproveRejectAllRecs
{
    List<PendingAppRecs>ProsInsts{get;set;}
    public List<ProcessInstance>prosInslist{get;set;}
    public boolean rendPgeBlock  {get;set;}
    public String pgMsg{get;set;}
    public string comments{get;set;}
    public List<GE_LGT_EM_ComplaintLineItem__c> selProsInss{get;set;}
   
    public List<ProcessInstance>  prosInsWrkItms = new List<ProcessInstance>();   
    private List<ProcessInstanceWorkitem>  prosInsWrkItms1 = new List<ProcessInstanceWorkitem>();
    public List<PendingAppRecs>  selVals = new List<PendingAppRecs>();       
    set<string>cliids=new set<string>();
    set<string>PIids=new set<string>();
    private List<Id> prosInsIds = new List<Id>();   
    public GE_LGT_EM_ApproveRejectAllRecs()
    {
        prosInslist= new List<ProcessInstance>();
        selProsInss = new List<GE_LGT_EM_ComplaintLineItem__c>();
            
        prosInslist=[Select Id, TargetObjectId, isDeleted,TargetObject.Type,Status,(Select Id, ProcessInstanceId, ActorId, Actor.Name, StepStatus, Comments From StepsAndWorkItems
                     Where StepStatus = 'Pending')From ProcessInstance Where isDeleted = false and Status = 'Pending' and TargetObject.Type='GE_LGT_EM_ComplaintLineItem__c'];
        for(ProcessInstance PIns:prosInslist){
            cliids.add(PIns.TargetObject.id);
            PIids.add(PIns.id);
            prosInsIds.add(PIns.Id);

        }
        prosInsWrkItms1 =  [SELECT Id, ProcessInstance.Id, ProcessInstance.Status, Actor.Id, Actor.Name, Actor.Type FROM ProcessInstanceWorkitem where ProcessInstance.Id in : prosInsIds];
              
   }
    public pagereference appPendingRecs()
    {
        if(!(prosInslist.size()>0))
        {
            pgMsg = 'There are no records submitted for approval.';
            rendPgeBlock  = true;
        }
        else
            rendPgeBlock  = true;
        return null;
    }
   
    public void appRej(String appRej)
    {
                     
            for(ProcessInstance  pwi :prosInslist)
            {
         
            for(GE_LGT_EM_ComplaintLineItem__c pi :selProsInss)

               {
         
                if(pwi.TargetObject.Id==pi.Id)
                {
                    Approval.ProcessWorkitemRequest req = new Approval.ProcessWorkitemRequest();
                    req.setComments(Comments);
                    req.setAction(appRej);
                    if(appRej == 'Approve')
                      // req.setNextApproverIds(new Id[] {pwi.id}); 
                        req.setNextApproverIds(null);  // No further approvals for this step needed.
     
                    List<ProcessInstanceWorkitem> procWrkItms = new List<ProcessInstanceWorkitem>();
                    procWrkItms  = [Select Id from ProcessInstanceWorkitem where ProcessInstance.Id =:pwi.id];  
                    system.debug('procWrkItms--->'+procWrkItms);                

                    if((!(procWrkItms.isEmpty()) && procWrkItms[0].Id!=null))
                    {
                      req.setWorkitemId(procWrkItms[0].Id);       
                                 
                        // Submit the request for approval   
                        Approval.ProcessResult result2 =  Approval.process(req);
                   }
                }
            }
        }
    }
   
   
    public pagereference approveAll()
    {
        system.debug('selProsInss--->'+selProsInss.size());
        system.debug('prosInsWrkItms--->'+prosInslist.size());  
        appRej('Approve');
        system.debug('appRej--->'+''); 
        Pagereference pg = new pagereference('/apex/GE_LGT_EM_BulkApproveReject');
        pg.setredirect(true);
        return pg;
    }

    public pagereference rejectAll()
    {
        appRej('Reject');
        Pagereference pg = new pagereference('/apex/GE_LGT_EM_BulkApproveReject');
        pg.setredirect(true);
        return pg;
    }

    public pagereference cancel()
    {
        Pagereference pg = new pagereference('/apex/GE_LGT_EM_BulkApproveReject');
        pg.setredirect(true);
        return pg;
    }
   
    public pagereference selRecs(){
 
            for(PendingAppRecs pendApp:ProsInsts)
            {
                if(pendApp.selected == true)
                {
                    selProsInss.add(pendApp.proInstce);
                }
            }       
            return null;
    }
 
  public List<PendingAppRecs> getProsInsts() {
   
        if (ProsInsts== null) {
            ProsInsts= new List<PendingAppRecs>();
            }
         else {
            ProsInsts.clear();
        }
       
        for(GE_LGT_EM_ComplaintLineItem__c pins : [SELECT Id,Name,GE_LGT_EM_SAPInvoiceNumber__c,GE_LGT_EM_ApprovingFunction__c,GE_LGT_EM_Category__c,GE_LGT_EM_ApprovedQuantity__c, CreatedDate FROM GE_LGT_EM_ComplaintLineItem__c where id=:cliids])
            {
             ProsInsts.add(new PendingAppRecs(pins));
            }
       
        return ProsInsts;
    }
   
    //wrapper class
    public class PendingAppRecs
    {
        public GE_LGT_EM_ComplaintLineItem__c proInstce{get; set;}
        public Boolean selected {get; set;}
     
        public PendingAppRecs(GE_LGT_EM_ComplaintLineItem__c p)
        {
        proInstce = p;
        selected = false;
       
        }
    } 
}


===============================================
my test class

@isTest(SeeAllData=true)
public class GE_LGT_EM_ApproveReject_test{
static testMethod void myUnitTest() {
   
    Test.startTest();  
        Case Caseobj=new Case(GE_LGT_EM_Salesorg__c='2BE1',Subject='test sample data');
        insert Caseobj;
       
       
        GE_LGT_EM_InvoiceLineItem__c newrec=new GE_LGT_EM_InvoiceLineItem__c(Name='testinvoicedata',CurrencyIsoCode='USD',GE_LGT_EM_CM_DM_RO_NO__c='5000');
        insert newrec;      
       
           
        GE_LGT_EM_ComplaintLineItem__c acc  = new GE_LGT_EM_ComplaintLineItem__c(GE_LGT_EM_Category__c='118-Product Mispick-Return',GE_LGT_EM_Comments__c='sample data',GE_LGT_EM_CaseNumber__c=Caseobj.id,CurrencyIsoCode='USD',GE_LGT_EM_CM_DM_RO_Number__c='500');
        insert acc ;
       
       Test.setMock(WebServiceMock.class, new GE_LGT_EM_171WebServiceMockImpl_test());
         // Create an approval request for the cli
    Approval.ProcessSubmitRequest req1 =new Approval.ProcessSubmitRequest();
    req1.setComments('Submitting request for approval.');
    req1.setObjectId(acc.id);

    // Submit the approval request for the cli
    Approval.ProcessResult result = Approval.process(req1);
  
    // Verify the result
   System.assert(result.isSuccess());

   System.assertEquals(
        'Pending', result.getInstanceStatus(),
        'Instance Status'+result.getInstanceStatus());
       
   
  // Approve the submitted request
    // First, get the ID of the newly created item
    List<Id> newWorkItemIds = result.getNewWorkitemIds();
system.debug('newWorkItemIds --->'+newWorkItemIds );
    // Instantiate the new ProcessWorkitemRequest object and populate it
    Approval.ProcessWorkitemRequest req2 =
        new Approval.ProcessWorkitemRequest();
    req2.setComments('Approving request.');
    req2.setAction('Approve');
   // req2.setNextApproverIds(new Id[] {UserInfo.getUserId()});
    req2.setNextApproverIds(new Id[] {acc.id});
    // Use the ID from the newly created item to specify the item to be worked
    req2.setWorkitemId(newWorkItemIds.get(0));

    // Submit the request for approval
    Approval.ProcessResult result2 =  Approval.process(req2);
  
    // Verify the results
system.debug('--------->'+result2);
   System.assert(result2.isSuccess(), 'Result Status:'+result2.isSuccess());

  System.assertEquals('Approved', result2.getInstanceStatus(),
     'Instance Status'+result2.getInstanceStatus());     
     Test.stopTest();
  
}    
       
   
}