Test Class Coverage On Field Set By Trigger

Question

I have a trigger that is effectively checking a custom list to match the Close Date with the Start/End dates for weeks so a custom field is populated with the text of the Start and End dates.

Trigger:

trigger CloseWeekUpdate on Opportunity (before insert, before update) {
Try{
    for(Opportunity opp : trigger.new){
        if(opp.CloseDate != NULL){
            system.debug('opp.CloseDate = ' + opp.CloseDate);
            for(CloseDateWeek__c rec : CloseDateWeek__c.getAll().values()){
                if (opp.CloseDate >= rec.WeekStartDate__c && opp.CloseDate <= rec.WeekEndDate__c){
                    system.debug('rec.WeekStartDate__c = ' + rec.WeekStartDate__c);
                    system.debug('rec.WeeEndDate__c = ' + rec.WeekEndDate__c);
                    opp.Close_Week__c = rec.WeekStartDate__c.format() + ' - ' + rec.WeekEndDate__c.format();
                    system.debug('rec.Close_Week__c = ' + opp.Close_Week__c);
                    break;
                }
            }
        }
    }
}
Catch(Exception Ex){
    system.debug('Exception Details = ' + Ex);
}

I have built a test class to insert a test Opportunity and I am getting to 50% but unable to get higher, how do I get the class to test line 9, 12 and 14 since these are the three it is telling me is failing.

Lines that are not testing:

• for(CloseDateWeek__c rec : CloseDateWeek__c.getAll().values()){
• if (opp.CloseDate >= rec.WeekStartDate__c && opp.CloseDate <= rec.WeekEndDate__c){
• opp.Close_Week__c = rec.WeekStartDate__c.format() + ' - ' + rec.WeekEndDate__c.format();

Here is the Test class I have:

    @isTest
public class TestCloseWeekUpdate {
    static testMethod void testCloseWeek(){
        Opportunity to = new Opportunity();
        to.Name = 'Test Name';
        to.CloseDate = Date.newInstance(2020,06,06);
        to.StageName = 'Closed Won';
        to.Start_Date__c = Date.newInstance(2020,06,01);
        to.Type = 'New Business';
        to.Market__c = 'Large';
        to.Premium__c = TRUE;
        to.Startup_Needed__c = 'Yes';
        insert to;
        test.startTest();
        try{
            to.Close_Week__c = '5/31/2020 - 6/6/2020';
        }
        Catch (Exception ee){}
        test.stopTest();
    }
}

Any help with getting that last 3 lines covered is greatly appreciated!

Answer 1

Found the issue to be I needed to also declare the custom list values using the following:

    CloseDateWeek__c cdw1 = new CloseDateWeek__c();
    cdw1.WeekStartDate__c = Date.newInstance(2020, 05, 31);
    cdw1.WeekEndDate__c = Date.newInstance(2020, 06, 06);
    cdw1.Name = 'Week Test';

Once I had the list values declared as well as the Opportunity values that gave me the full coverage.