Fix Iteration due_date_passed

We had `<=` in due_date_passed when it should have been `<` as we do not
want Date.today to count as the due date having passed already.

app/models/iteration.rb

@@ -36,8 +36,8 @@ class Iteration < ApplicationRecord
       .where('due_date is NULL or due_date >= ?', start_date)
   end
 
-  scope :start_date_passed, -> { where('start_date <= ?', Date.current).where('due_date > ?', Date.current) }
-  scope :due_date_passed, -> { where('due_date <= ?', Date.current) }
+  scope :start_date_passed, -> { where('start_date <= ?', Date.current).where('due_date >= ?', Date.current) }
+  scope :due_date_passed, -> { where('due_date < ?', Date.current) }
 
   state_machine :state_enum, initial: :upcoming do
     event :start do

ee/changelogs/unreleased/iteration_due_date_passed_fix.yml

+---
+title: Fix for Iterations closing a day early
+merge_request: 40884
+author:
+type: fixed

ee/spec/workers/iterations_update_status_worker_spec.rb

@@ -28,14 +28,17 @@ RSpec.describe IterationsUpdateStatusWorker do
     end
 
     context 'when iterations are in `started` state' do
-      let_it_be(:iteration) { create(:iteration, :skip_future_date_validation, start_date: 10.days.ago, due_date: 1.day.ago, state_enum: ::Iteration::STATE_ENUM_MAP[:started]) }
+      let_it_be(:iteration1) { create(:iteration, :skip_future_date_validation, start_date: 10.days.ago, due_date: 2.days.ago, state_enum: ::Iteration::STATE_ENUM_MAP[:started]) }
+      let_it_be(:iteration2) { create(:iteration, :skip_future_date_validation, start_date: 1.day.ago, due_date: Date.today, state_enum: ::Iteration::STATE_ENUM_MAP[:started]) }
 
-      it 'updates from started to closed when due date is past' do
-        expect(iteration.state).to eq('started')
+      it 'updates from started to closed when due date is past, does not touch others', :aggregate_failures do
+        expect(iteration1.state).to eq('started')
+        expect(iteration2.state).to eq('started')
 
         worker.perform
 
-        expect(iteration.reload.state).to eq('closed')
+        expect(iteration1.reload.state).to eq('closed')
+        expect(iteration2.reload.state).to eq('started')
       end
     end
   end