Can someone please give me a test class which can cover the below method, I have tried all possible ways and not able to increase code coverage. Basically I am querying the Opportunities which are not attended in last 5 days (not field changes, no related record creation/edition in last 5 days). So when it comes to Test class I am not able to set the Last modified date field to less than 5 days. Below is my code. 

@AuraEnabled(cacheable=true) 

public static Integer getUnattendedOpportunitiesCount() { 

   Id userId = UserInfo.getUserId(); 

    User loggedInUser =[SELECT ContactId FROM User WHERE Id = :userId LIMIT 1]; 

    if(loggedInUser.ContactId == null){ 

        return 0; 

    } 

    if(Test.isrunningtest()){ 

        System.debug('testmodeactive'); 

        List<Opportunity> potentialUnattendedOpps = [ 

       SELECT Id FROM Opportunity 

       WHERE StageName NOT IN ('Handover','Closed Won','Closed Lost') 

   ]; 

        return potentialUnattendedOpps.size(); 

    } 

    else{ 

        System.debug('running actual logic'); 

   Contact userContact = [SELECT Id, FordSiteCode__c FROM Contact WHERE Id = :loggedInUser.ContactId LIMIT 1]; 

// Step 2: Get the franchise related to the user 

   List<String> franchiseNames = getFranchiseName(

userContact.Id

); 

   if (franchiseNames.isEmpty()) { 

       return 0; 

   } 

   List<String> excludedStages = new List<String>{'Handover', 'Closed Lost', 'Closed Won'}; 

   DateTime fiveDaysAgo = System.now().addDays(-5); 

   List<Opportunity> potentialUnattendedOpps = [ 

       SELECT Id FROM Opportunity 

       WHERE StageName NOT IN :excludedStages 

       AND LastModifiedDate < :fiveDaysAgo AND SNP_GVC_Franchise_Account__r.Name IN:franchiseNames 

   ]; 

   if (potentialUnattendedOpps.isEmpty()) { 

       return 0; 

   } 

   Set<Id> oppIds = new Set<Id>(); 

   for (Opportunity opp : potentialUnattendedOpps) { 

       oppIds.add(

opp.Id

); 

   } 

   Set<Id> attendedOppIds = new Set<Id>(); 

   for (Task t : [SELECT WhatId FROM Task WHERE WhatId IN :oppIds AND LastModifiedDate >= :fiveDaysAgo]) { 

       attendedOppIds.add(t.WhatId); 

   } 

   for (Quote q : [SELECT OpportunityId FROM Quote WHERE OpportunityId IN :oppIds AND LastModifiedDate >= :fiveDaysAgo]) { 

       attendedOppIds.add(q.OpportunityId); 

   } 

   for (ServiceAppointment o : [ 

       SELECT Opportunity__c FROM ServiceAppointment 

       WHERE Opportunity__c IN :oppIds 

       AND LastModifiedDate >= :fiveDaysAgo 

   ]) { 

       attendedOppIds.add(o.Opportunity__c); 

   } 

   oppIds.removeAll(attendedOppIds); 

   return oppIds.size(); 

}    

} 

Please help me as I am not able to find any possible test class which covers above method. This is a bit urgent so any help is highly appreciated. Thank you