trigger ZCQAttachment on Attachment (after insert) {
    Set<Id> Parents = new Set<Id>();

    List<Attachment> newFiles = new List<Attachment>();


    for (attachment a : Trigger.New) {
        Parents.add(a.parentId);
    }
System.Debug('NewTriggerParentID+++++' + Parents);

    for (EmailMessage e : [SELECT Id, ParentId,Community_Quote__c FROM EmailMessage WHERE Id in :Parents]) { //loop through unique parents
    System.Debug('NewTriggere+++++' + e);
        for (Attachment a : Trigger.New) {
            if (e.Id == a.ParentId) {
                Attachment newFile = a.clone();
                newFile.ParentId = e.Community_Quote__c;
                newFiles.add(newFile);
            }
        }
    }

    Insert newFiles;
    System.Debug('++++++newFiles' +newFiles);
}

Quote quoterec = [Select Case__c, Id, OpportunityId,AccountId,Case_Thread__c,QuoteNumber From Quote where id=:qt];
        //Insert emailmessage for case
        EmailMessage email = new EmailMessage();
            email.FromAddress = 'test@abc.org';
            email.Incoming = True;
            email.ToAddress= 'test@xyz.org';
            email.Subject = 'Test email';
            email.HtmlBody = 'Test email body';
            email.ParentId = quoterec.Case__c; 
        insert email;
        Attachment attach = new Attachment();

        attach.Name='Unit Test Attachment';
            Blob bodyBlob=Blob.valueOf('Unit Test Attachment Body');
            attach.body=bodyBlob;
            attach.parentId=quoterec.Case__c;
        insert attach;

                   Community_Quote__c ins = new Community_Quote__c ( 
                        Case__c = quoteRec.Case__c, 
                        Quote__c = quoteRec.Id, 
                        Opportunity__c = quoteRec.OpportunityId, 
                        Account__c = quoteRec.AccountId,
                        ThreadID__c = quoteRec.Case_Thread__c,
                        Name = quoteRec.QuoteNumber,
                        Related_Email_Message__c = email.id );
                insert ins;

                EmailMessage emg = [Select Community_Quote__c from EmailMessage Where Id=:email.id];
                    emg.Community_Quote__c=ins.Id;
                update emg;
        
        Attachment newFile = new Attachment();

        newFile.Name='Unit Test Attachment';
            Blob bodyBlob2=Blob.valueOf('Unit Test Attachment Body');
            newFile.body=bodyBlob;
            newFile.parentId=emg.Community_Quote__c;
        insert newFile;