Remove paginate_commit_view feature flag

Enables pagination for the commit view by default.

app/helpers/commits_helper.rb

@@ -127,7 +127,7 @@ module CommitsHelper
   end
 
   def conditionally_paginate_diff_files(diffs, paginate:, per: Projects::CommitController::COMMIT_DIFFS_PER_PAGE)
-    if paginate && Feature.enabled?(:paginate_commit_view, @project, type: :development)
+    if paginate
       Kaminari.paginate_array(diffs.diff_files.to_a).page(params[:page]).per(per)
     else
       diffs.diff_files

app/views/projects/diffs/_diffs.html.haml

@@ -3,7 +3,7 @@
 - can_create_note = !@diff_notes_disabled && can?(current_user, :create_note, diffs.project)
 - diff_page_context = local_assigns.fetch(:diff_page_context, nil)
 - load_diff_files_async = Feature.enabled?(:async_commit_diff_files, @project) && diff_page_context == "is-commit"
-- paginate_diffs = local_assigns.fetch(:paginate_diffs, false) && !load_diff_files_async && Feature.enabled?(:paginate_commit_view, @project, type: :development)
+- paginate_diffs = local_assigns.fetch(:paginate_diffs, false) && !load_diff_files_async
 - diff_files = conditionally_paginate_diff_files(diffs, paginate: paginate_diffs)
 
 .content-block.oneline-block.files-changed.diff-files-changed.js-diff-files-changed

changelogs/unreleased/remove-commit-paginate-ff.yml

+---
+title: Remove paginate_commit_view feature flag
+merge_request: 54236
+author:
+type: changed

config/feature_flags/development/paginate_commit_view.yml

----
-name: paginate_commit_view
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/52819
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/300540
-milestone: '13.9'
-type: development
-group: group::source code
-default_enabled: false

spec/features/commit_spec.rb

@@ -35,9 +35,8 @@ RSpec.describe 'Commit' do
       end
     end
 
-    context "pagination enabled" do
+    describe "pagination" do
       before do
-        stub_feature_flags(paginate_commit_view: true)
         stub_const("Projects::CommitController::COMMIT_DIFFS_PER_PAGE", 1)
 
         visit project_commit_path(project, commit)
@@ -61,18 +60,5 @@ RSpec.describe 'Commit' do
         expect(page).to have_selector(".files ##{files[1].file_hash}")
       end
     end
-
-    context "pagination disabled" do
-      before do
-        stub_feature_flags(paginate_commit_view: false)
-
-        visit project_commit_path(project, commit)
-      end
-
-      it "shows both diffs on the page" do
-        expect(page).to have_selector(".files ##{files[0].file_hash}")
-        expect(page).to have_selector(".files ##{files[1].file_hash}")
-      end
-    end
   end
 end

spec/helpers/commits_helper_spec.rb

@@ -238,15 +238,5 @@ RSpec.describe CommitsHelper do
         expect(subject).to be_a(Gitlab::Git::DiffCollection)
       end
     end
-
-    context "feature flag is disabled" do
-      let(:paginate) { true }
-
-      it "returns a standard DiffCollection" do
-        stub_feature_flags(paginate_commit_view: false)
-
-        expect(subject).to be_a(Gitlab::Git::DiffCollection)
-      end
-    end
   end
 end