Added: Specs to cover other endpoints for the same reason

spec/requests/api/issues_spec.rb

@@ -641,12 +641,40 @@ describe API::Issues do
         expect_paginated_array_response(group_confidential_issue.id)
       end
 
+      context 'without sort params' do
         it 'sorts by created_at descending by default' do
           get api(base_url, user)
 
           expect_paginated_array_response([group_closed_issue.id, group_confidential_issue.id, group_issue.id])
         end
 
+        context 'with 2 issues with same created_at' do
+          let!(:group_issue2) do
+            create :issue,
+                   author: user,
+                   assignees: [user],
+                   project: group_project,
+                   milestone: group_milestone,
+                   updated_at: 1.hour.ago,
+                   title: issue_title,
+                   description: issue_description,
+                   created_at: group_issue.created_at
+          end
+
+          it 'page breaks first page correctly' do
+            get api("#{base_url}?per_page=3", user)
+
+            expect_paginated_array_response([group_closed_issue.id, group_confidential_issue.id, group_issue2.id])
+          end
+
+          it 'page breaks second page correctly' do
+            get api("#{base_url}?per_page=3&page=2", user)
+
+            expect_paginated_array_response([group_issue.id])
+          end
+        end
+      end
+
       it 'sorts ascending when requested' do
         get api("#{base_url}?sort=asc", user)
 
@@ -856,12 +884,40 @@ describe API::Issues do
       expect_paginated_array_response([issue.id, closed_issue.id])
     end
 
+    context 'without sort params' do
       it 'sorts by created_at descending by default' do
         get api("#{base_url}/issues", user)
 
         expect_paginated_array_response([issue.id, confidential_issue.id, closed_issue.id])
       end
 
+      context 'with 2 issues with same created_at' do
+        let!(:closed_issue2) do
+          create :closed_issue,
+                 author: user,
+                 assignees: [user],
+                 project: project,
+                 milestone: milestone,
+                 created_at: closed_issue.created_at,
+                 updated_at: 1.hour.ago,
+                 title: issue_title,
+                 description: issue_description
+        end
+
+        it 'page breaks first page correctly' do
+          get api("#{base_url}/issues?per_page=3", user)
+
+          expect_paginated_array_response([issue.id, confidential_issue.id, closed_issue2.id])
+        end
+
+        it 'page breaks second page correctly' do
+          get api("#{base_url}/issues?per_page=3&page=2", user)
+
+          expect_paginated_array_response([closed_issue.id])
+        end
+      end
+    end
+
     it 'sorts ascending when requested' do
       get api("#{base_url}/issues", user), params: { sort: :asc }