SalesForce代码覆盖率很低（53%），我不知道为什么

我已经在sandbox中为salesforce创建了一个类，它工作得很好，但是当我尝试将它部署到生产环境中时，我得到的代码成本很低。 我尝试了我所知道的一切，但是猫找到了解决办法， 这是密码，有什么帮助吗

public Class CandidateFileUploads_Ver1{

public String parentId ;
public String idxVal {get;set;}
public Map<String, Attachment> attachments {get;set;}
public Map<String, Attachment> attachmentsDup {get;set;}

public Boolean validateUser {get;set;}
public String multipulDocs {get;set;}
public String userMessage {get;set;}

private static final Map<String, String> descriptionNameMap = new Map<String, String>{
'Upload a scan of the Passport'=>'Passport',
'Upload a Resume (CV)'=>'Resume (CV)'};

private static final Map<String, String> descriptionCheckFieldMap = new Map<String, String>{
'Upload a scan of the Passport'=>'Passport_Attached__c',
'Upload a Resume (CV)'=>'CV_Attached__c'};


public CandidateFileUploads_Ver1(ApexPages.StandardController controller){

    idxVal = '';
    validateUser = true;
    multipulDocs = System.Label.multiple_docs;
    userMessage = '';

    checkUserValid();
    attachments = new Map<String, Attachment>();       
    attachmentsDup = new Map<String, Attachment>();  

    parentId = System.currentPageReference().getParameters().get('Id');
    //parentId = '0034E00000FVJzA';
    List<Attachment> existingAttachments = fetchAllAttachments(parentId);//get all attachements for thew user

    for(String key :descriptionNameMap.keySet()){
        String kokp = descriptionCheckFieldMap.get(key);
        attachments.put(key.toLowerCase(), new Attachment(parentId=parentId, Description=key, body=null,Name = kokp )) ;
    }    

    for(Attachment attach :existingAttachments){
        attach.body = null;
        attachments.put(attach.Description.toLowerCase(), attach);             
    }
}

 public void checkUserValid(){
    String hours = System.Label.hours;
    String whitelist = System.Label.whitelist;
    ID pId = System.currentPageReference().getParameters().get('Id');
    Boolean validateUser = true;
    String userMessage;

    Contact parenter = new Contact(Id=pId);
     // Validate Proccess status: get proccess string status
            String getStatus = parenter.Process_Status__c;
            String[] whitelistArr = whitelist.split(',');// split proccess string

             Boolean checkWhiteList = false;
             for(String val : whitelistArr){
                 if(val == getStatus) {
                     checkWhiteList = true;
                 }
             }

             if(validateUser != checkWhiteList){
                 validateUser = false;
                 userMessage = System.Label.error_not_premitted;
                 return;
             }

    //Validate Dates
            //Datetime  getLinktimestamp = (Datetime) contactSObject.get('linktimestamp__c');
            Datetime  getLinktimestamp = parenter.linktimestamp__c;
            Datetime  getValidTime = getLinktimestamp.addHours(Integer.valueof(hours.trim())); //add 48 hours
            Datetime timeNow = System.now();

             if(getValidTime < timeNow){//if if more then 48 hours
                 validateUser = false;
                 userMessage = System.Label.error_expired;
                 return;
             }
 }


 public Datetime  getLinktimestamp(){
    ID pId = System.currentPageReference().getParameters().get('Id');
    Datetime  accts = [SELECT linktimestamp__c FROM Contact WHERE Id=:pId].linktimestamp__c;
    return accts;
}


public List<Contact> contactObj(){
    ID pId = System.currentPageReference().getParameters().get('Id');

    sObject mySObject =[SELECT linktimestamp__c,Process_Status__c FROM Contact WHERE Id=:pId];
    //Datetime llli = s.linktimestamp__c;
    String strObjectName = String.valueOf( mySObject.get('linktimestamp__c') );

    List<Contact> obj = [SELECT linktimestamp__c,Process_Status__c FROM Contact WHERE Id=:pId];
    return obj;
}

public void uploadAttachment(){     
    List<Attachment> uploads = new List<Attachment>() ;
    List<Attachment> deletes = new List<Attachment>() ;

    try{
        for(integer i = 0 ; i < attachments.values().size() ; i++){

            Attachment attach = attachments.values()[i] ;
            if(attach.parentId == NULL){
                        attach.parentId = System.currentPageReference().getParameters().get('Id');
            }
            //this is a file that was uploaded now
            if(attach.body != NULL){
                //remove current attachement before uploading a new one
                if(attach.Id != NULL){
                    deletes.add(attachments.values().remove(i));
                }

                attach.Name = renameFile(attach.Name, attach.Description);
                uploads.add(attach) ;
            }
        }

        if(!deletes.isEmpty()){
            delete deletes ;
        }

        if(!uploads.isEmpty()){        
            for(Attachment atchmnt :uploads){
                atchmnt.Id = null;   
            }

            insert uploads;

            Contact parent = new Contact(Id=parentId);

            for(Attachment attach :getUpdatedAttachments(uploads).values()){
                attach.body = null;
                attachments.put(attach.Description.toLowerCase(), attach);

                parent.put(descriptionCheckFieldMap.get(attach.Description), true);                    
            }

            update parent;

            ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.info,'Attachment upload Successfully');
            ApexPages.addMessage(myMsg);
        }

    }        
    catch(exception e){
        ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.ERROR,'An Error occured when uploading attachment');
        ApexPages.addMessage(myMsg);
    }
}

public void removeRow(){
    Attachment a = attachments.get(idxVal.toLowerCase());

    Contact parent = new Contact(Id=parentId);
    parent.put(descriptionCheckFieldMap.get(a.Description), false); 

    delete a;
    update parent;

    system.debug('attachments before: ' + attachments);
    attachments.put(a.Description.toLowerCase(), new Attachment(parentId = parentId, description = a.description, body=null));
    system.debug('attachments after: ' + attachments);
}    

private static String renameFile(String fileName, String description){
    String newName = descriptionNameMap.get(description);
    if(String.isNotBlank(fileName) && fileName.contains('.')){
        newName += fileName.substring(fileName.lastIndexOf('.'), fileName.length());
    }

    return newName;
} 

private static Map<String,Attachment> getUpdatedAttachments(List<Attachment> attachList){

    Map<String,Attachment> attMap = new Map<String,Attachment>();

    for(Attachment att : [SELECT Id,Name,Description
                                      FROM Attachment
                                      WHERE Id = :attachList]){
        attMap.put(att.Description.toLowerCase(), att) ;       
    }

    return attMap;
}

public List<Attachment> fetchAllAttachments(String parentId){

    return [SELECT Id,Name,Description,parentId
            FROM Attachment 
            WHERE ParentId =: parentId 
            AND Description IN :descriptionNameMap.keySet()];
}

公共类候选文件上载\u版本1{
公共字符串parentId；
公共字符串idxVal{get；set；}
公共映射附件{get；set；}
公共地图附件设置{get；set；}
公共布尔验证程序{get；set；}
公共字符串multipulDocs{get；set；}
公共字符串userMessage{get；set；}
私有静态最终映射描述NameMap=新映射{
'上载护照扫描'=>'护照'，
'上传简历（CV）'=>'简历（CV）}；
私有静态最终映射描述checkfieldmap=新映射{
“上传护照扫描”=>“护照随附”，
“上传简历（CV）”=>“简历附在简历上”}；
公共候选文件上传版本1（ApexPages.StandardController）{
idxVal=''；
validateUser=true；
multipulDocs=System.Label.multiple_docs；
userMessage=''；
checkUserValid（）；
附件=新地图（）；
attachmentsDup=新映射（）；
parentId=System.currentPageReference（）.getParameters（）.get（'Id'）；
//parentId='0034E00000FVJzA'；
List existingAttachments=fetchAllAttachments（parentId）；//获取w用户的所有附件
for（字符串键：descriptionNameMap.keySet（））{
字符串kokp=descriptionCheckFieldMap.get（键）；
attachments.put（key.toLowerCase（），新附件（parentId=parentId，Description=key，body=null，Name=kokp））；
}    
用于（附件附加：现有附件）{
attach.body=null；
attachments.put（attach.Description.toLowerCase（），attach）；
}
}
public void checkUserValid（）{
字符串小时数=System.Label.hours；
字符串白名单=System.Label.whitelist；
ID pId=System.currentPageReference（）.getParameters（）.get（'ID'）；
布尔验证euser=true；
字符串用户消息；
联系人父项=新联系人（Id=pId）；
//验证进程状态：获取进程字符串状态
字符串getStatus=parenter.Process\u Status\uuu c；
String[]whitelistArr=whitelist.split（'，'）；//split进程字符串
布尔检查白名单=假；
for（字符串val:whitelistArr）{
if（val==getStatus）{
checkWhiteList=true；
}
}
如果（validateUser！=检查白名单）{
validateUser=false；
userMessage=System.Label.error\u未预写；
返回；
}
//验证日期
//Datetime getLinktimestamp=（Datetime）contactSObject.get（'linktimestamp_____c'）；
Datetime getLinktimestamp=parenter.linktimestamp\uuu\c；
Datetime getValidTime=getLinktimestamp.addHours（Integer.valueof（hours.trim（））；//添加48小时
Datetime timeNow=System.now（）；
if（getValidTime