From c18016a3616a8ace9560c5391bb9eb2a09d38ecd Mon Sep 17 00:00:00 2001
From: Kenny Lee <kennylee@nhs.net>
Date: Mon, 5 Jan 2026 13:47:17 +0000
Subject: [PATCH] support 21st century 4 digit year strings for Daterange

---
 CHANGELOG.md                 | 1 +
 lib/ndr_support/daterange.rb | 2 +-
 test/daterange_test.rb       | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 53104c8..52f66f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## [Unreleased]
 ## Fixed
 * Add 2028 bank holidays
+* support 21st century 4 digit year strings for Daterange
 
 ## 5.10.5 / 2025-11-05
 ## Fixed
diff --git a/lib/ndr_support/daterange.rb b/lib/ndr_support/daterange.rb
index 6830212..836852f 100644
--- a/lib/ndr_support/daterange.rb
+++ b/lib/ndr_support/daterange.rb
@@ -6,7 +6,7 @@
 class Daterange
   attr_reader :date1, :date2, :source
 
-  OKYEARS = 1880..2030
+  OKYEARS = 1880..2099
 
   # Raised when dates are not supplied in the correct order if do_not_flip_dates is passed as true:
   class WrongDateOrderError < StandardError; end
diff --git a/test/daterange_test.rb b/test/daterange_test.rb
index fefc001..7eb44a3 100644
--- a/test/daterange_test.rb
+++ b/test/daterange_test.rb
@@ -98,7 +98,7 @@ def test_year_range_attributes
   end
 
   def test_year_range_future
-    s = 2.years.from_now.strftime('%Y')
+    s = '2099'
     dr = Daterange.new(s)
     assert_equal s, dr.to_s, "Daterange should support future years up to #{s}"
   end