diff --git a/tests/extract-rails-id.test.js b/tests/extract-rails-id.test.js
index 48516c7..a2267cd 100644
--- a/tests/extract-rails-id.test.js
+++ b/tests/extract-rails-id.test.js
@@ -10,4 +10,12 @@ test('Extract a Rails GUID is of wrong type', () => {
 
 test('Extract a Rails GUID when a string is NOT a Rails GUID', () => {
     expect(extractRailsId('The quick brown fox jumps over the lazy dog')).toBe(null);
+});
+
+test('Extract a Rails GUID with a timestamp', () => {
+  expect(extractRailsId('gid://qeepsake-rails/MyModel/12345%2C2022-09-26+13%3A08%3A27+UTC')).toBe('12345%2C2022-09-26+13%3A08%3A27+UTC');
+});
+
+test('Extract a Rails GUID and strip the timestamp', () => {
+  expect(extractRailsId('gid://qeepsake-rails/MyModel/12345%2C2022-09-26+13%3A08%3A27+UTC', true)).toBe('12345');
 });
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