Hello, 

I am having trouble getting my test class to work with my after update trigger. When I run my test it is showing 0% code coverage. Can anyone help me to understand why it is not working?

Here is the trigger code:

trigger FUS_UGGR_Application_Submitted on TargetX_SRMb__Application__c (After Update) {
	
    For (TargetX_SRMb__Application__c A : Trigger.New) {
    
    //Update Submitted Application Contact record to "Applicant"
    String ContactId = Trigger.newMap.get(A.ID).TargetX_SRMb__Contact__c;
    String New_Stage = Trigger.newMap.get(A.ID).TargetX_SRMb__Stage__c;
    String Old_Stage = Trigger.oldMap.get(A.ID).TargetX_SRMb__Stage__c;
    String App_Type = Trigger.newMap.get(A.ID).TargetX_SRMb__Application_Type__c;
        
    Contact C = [select id from Contact where id = :contactid];
    
 	IF(New_Stage <> Old_Stage && New_Stage == 'Submitted' && App_Type <> 'Undergraduate Non-Degree Post Secondary'){
    C.UGGR_Student_Stage__c = 'Applicant';
               	
    Update C;
            
        }        
    }
}

Here is my test class:

@isTest
public class FUS_Test_UGGR_App_Submit {

   //Perform Tests
    static testMethod void ValidateUGGRAppSubmit() 
    {

    Contact c = new Contact(
        FirstName = 'Test', 
        LastName = 'Test'
    );
    Insert c;
   
    TargetX_SRMb__Application__c a = new TargetX_SRMb__Application__c(
        TargetX_SRMb__Contact__c = c.Id, 
        TargetX_SRMb__Application_Type__c = 'Undergraduate',
        TargetX_SRMb__Stage__c = 'In Progress'
    );
    
    Insert a;
    
    Test.StartTest();
    	a.TargetX_SRMb__Stage__c = 'Submitted';
    	Update a;
    Test.stopTest();
    }
}