HI   i wrote trigger  ,   and i neeed to test  coverage fothat trigger

,i wrote test class for that , but i am not gettin any covarge, any can help;

trigger updateAsurvey on Send_Email__c (Before update) {
list<Anxiety_Survey_del__c> aslist=new list<Anxiety_Survey_del__c>();
list<Send_Email__c> slist=new list<Send_Email__c>();
list<Send_Email__c> dellist=new list<Send_Email__c>();
for(Send_Email__c se:trigger.new){
If(se.change__c!=null&&se.Date_to_send__c!=null){
If(se.Anxiety_Survey__c!=null)
If(se.Anxiety_Survey__r.Survey_Created__c==false)
{
    for(Send_Email__c sek:[select id from Send_Email__c where Anxiety_Survey__c=:se.Anxiety_Survey__c and id!=:se.id])
    dellist.add(sek);
    Anxiety_Survey_del__c ask=new Anxiety_Survey_del__c(id=se.Anxiety_Survey__c);
    ask.Send_Daily_email__c=se.Date_to_send__c.adddays(1);
    aslist.add(ask);
    Send_Email__c sec=new Send_Email__c();
    sec.Date_to_send__c=se.Date_to_send__c.adddays(1);
    sec.Anxiety_Survey__c=se.Anxiety_Survey__c;
    slist.add(sec);    
}
}
}
if(slist.size()>0)
insert slist;
if(aslist.size()>0)
update aslist;
if(dellist.size()>0)
delete dellist;

}

@isTest
private class TestupdateAsurvey
{
 private Static  TestMethod  void Testupdate1()
{
 Patient__c  p =new Patient__c(E_LastName__c='xxxx',E_Electronic_Chart_ID__c='aaaaaa');
 insert p;
 Patient__c  p1 =new Patient__c(E_LastName__c='yyyyy',E_Electronic_Chart_ID__c='zzzzz');
 insert p1;
 Anxiety_Survey_del__c  a=new Anxiety_Survey_del__c(Name='aaaaa',Patient__c =p.id,Survey_Created__c=false);
 insert a;
 Anxiety_Survey_del__c  a1=new Anxiety_Survey_del__c(Name='bbbb',Patient__c = p.id,Survey_Created__c=false);
 insert a1;
 Send_Email__c  s=new Send_Email__c(Anxiety_Survey__c=a.id,change__c='zzzz',Date_to_send__c=system.today().adddays(3));
 insert s;
 Send_Email__c  s1=new Send_Email__c(Anxiety_Survey__c=a.id,change__c='eeee',Date_to_send__c=system.today().adddays(4));
 insert s1;
 //a1.Patient__c=p1.id ;
 //update a1;
 s1.Anxiety_Survey__c=a1.id;
 delete s1;
 
}
}