Make all vawave files end in 3 digit numbers (#20370)

Co-authored-by: achan <achan@Ubuntu.myguest.virtualbox.org>

modules/vye/lib/vye/batch_transfer/egress_files.rb

@@ -24,7 +24,7 @@ def address_changes_filename = prefixed_dated('CHGADD')
       def direct_deposit_filename = prefixed_dated('DirDep')
 
       # enrollment verification sent to BDN everyday.
-      def verification_filename = "vawave#{now_in_bdn_timezone.yday}"
+      def verification_filename = format('vawave%03d', now_in_bdn_timezone.yday)
 
       public
 

modules/vye/spec/lib/vye/batch_transfer/egress_files_spec.rb

@@ -35,4 +35,44 @@
 
     described_class.verification_upload
   end
+
+  describe '#verification_filename' do
+    around do |example|
+      Timecop.freeze(time) { example.run }
+    end
+
+    let(:central_timezone) { 'Central Time (US & Canada)' }
+
+    context 'on first day of the year' do
+      let(:time) { Time.find_zone(central_timezone).local(2024, 1, 1, 12, 0, 0) }
+
+      it 'pads with zeros' do
+        expect(described_class.send(:verification_filename)).to eq('vawave001')
+      end
+    end
+
+    context 'on day 99 of the year' do
+      let(:time) { Time.find_zone(central_timezone).local(2024, 4, 8, 12, 0, 0) }
+
+      it 'pads with zeros' do
+        expect(described_class.send(:verification_filename)).to eq('vawave099')
+      end
+    end
+
+    context 'on last day of a leap year' do
+      let(:time) { Time.find_zone(central_timezone).local(2024, 12, 31, 12, 0, 0) }
+
+      it 'handles day 366' do
+        expect(described_class.send(:verification_filename)).to eq('vawave366')
+      end
+    end
+
+    context 'on last day of a non-leap year' do
+      let(:time) { Time.find_zone(central_timezone).local(2023, 12, 31, 12, 0, 0) }
+
+      it 'handles day 365' do
+        expect(described_class.send(:verification_filename)).to eq('vawave365')
+      end
+    end
+  end
 end