Created a new scheduler class; (works like a champ in sandbox)
(the purpose is to update a date field every night after midnight)

global class SchedulerToUpdateDate implements Schedulable { List<Grad_Employment_Detail__c> allRec = new List<Grad_Employment_Detail__c>(); List<Grad_Employment_Detail__c> toUpdate = new List<Grad_Employment_Detail__c>();     global void  execute(SchedulableContext sc){         allRec = [select id, current_Date__c from Grad_Employment_Detail__c];         for(Grad_Employment_Detail__c ge: allRec){             ge.current_Date__c = date.today();             toUpdate.add(ge);         }         update toUpdate;     } }

Was getting chatter answers error trying to push into production. Discovered I had no Test class. Here's the test class;

@IsTest public class SchedulerToUpdateDate_Test{ public static testmethod void unitTest(){ Test.starttest(); Grad_Employment_Detail__c to = new Grad_Employment_Detail__c (); to.current_Date__c = date.today(); insert to; SchedulerToUpdateDate wau = new SchedulerToUpdateDate(); String sch = '0 00 1 3 * ?'; system.schedule('Test', sch, wau); test.stoptest(); } }

Now I'm getting this error trying to push into production;

Code Coverage Failure
Your code coverage is 0%. You need at least 75% coverage to complete this deployment.
SchedulerToUpdateDate

Error Message;
System.DmlException: Insert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [Grad_Employment_Details__c]: [Grad_Employment_Details__c] 
Stack Trace: Class.SchedulerToUpdateDate_Test.unitTest: line 7, column 1

Original Post; for more details
https://success.salesforce.com/answers?id=9063A0000019alZ

Really need some help with this.

Thanks in Advance!

Michael Scott