Hello, Would someone be able to assist in writing a test class for the following apex class:
global class purgeFiles implements Schedulable{
    
    global void execute(SchedulableContext SC) {
        
    List<ContentDocumentLink > docs;
        docs = [SELECT Id, Linkedentity.name, Linkedentity.id,ContentDocument.CreatedDate  
                FROM contentDocumentLink 
                WHERE Linkedentityid 
                IN (SELECT Id FROM lead where createddate < Last_N_Days:7 and isconverted = false) ];  
                //may want to change to include ALL leads
                //AND ContentDocument.CreatedDate < Last_N_Days:7];
                if(!docs.isEmpty())
            delete docs;
    }
}

Thank you very much