1 files changed, 25 insertions, 0 deletions
diff --git a/spec/lib/container_registry/tag_spec.rb b/spec/lib/container_registry/tag_spec.rb
index 190ddef0cd5..cb5c6a60e1d 100644
--- a/spec/lib/container_registry/tag_spec.rb
+++ b/spec/lib/container_registry/tag_spec.rb
@@ -240,6 +240,31 @@ RSpec.describe ContainerRegistry::Tag do
             it_behaves_like 'setting and caching the created_at value'
           end
         end
+
+        describe 'updated_at=' do
+          subject do
+            tag.updated_at = input
+            tag.updated_at
+          end
+
+          context 'with a valid input' do
+            let(:input) { 2.days.ago.iso8601 }
+
+            it { is_expected.to eq(DateTime.iso8601(input)) }
+          end
+
+          context 'with a nil input' do
+            let(:input) { nil }
+
+            it { is_expected.to eq(nil) }
+          end
+
+          context 'with an invalid input' do
+            let(:input) { 'not a timestamp' }
+
+            it { is_expected.to eq(nil) }
+          end
+        end
       end
     end
   end