Hi, 

I would like to write a test to understand if a next business date/time trigger is updating a field. I'm trying to test by inserting a new lead and then compare its next task start time (next business date/time) is the same as the systems next business date/time. At the minute the console is returning:"Comparison arguments must be compatible types: Datetime, REPRO__Lead__c". Wondering if anyone has a resource or an idea on how can get this working?

@isTest
public class NextAvailableBusinessMomentTest{
    @isTest
    private static void newLeadTaskStartTimeTest(){
        
        REPRO__Lead__c ld = new REPRO__Lead__c();
        ld.REPRO__First_Name__c = 'Homer';
        ld.REPRO__Last_Name__c = 'Simpson';
        ld.REPRO__Email__c = 'hsimpson@springfieldmail.com';
        ld.Name = 'Homer Simpson - Time Check';
        
        Test.startTest();
       
         //Insert the above RP custom lead field values
         insert ld;
		
        //Get the default business hours
        Id businessHourId = [SELECT Id FROM BusinessHours WHERE IsDefault = true].Id;
        
        //Get the next date when business hours are open. If the specified target date falls within business hours, this target date is returned.
        Datetime targetDate = system.today();
        Datetime nextDate = BusinessHours.nextStartDate(businessHourId, targetDate);
		
        //Get Task Start Time created by Next Available Business Moment triggered before inserted lead created
        REPRO__Lead__c updatelead = [Select Task_Start_Time__c FROM REPRO__Lead__c where Id =: ld.Id];
        
        //expected vs actual system response for next task completed task time
        System.assertEquals(nextDate, updatelead);

        Test.stopTest();
            
    }
    
    
}