Enable serving static objects from an external storagestatic-objects-external-storage

It consists of two parts:

1. Redirecting users to the configured external storage
1. Allowing the external storage to request the static object(s)
   on behalf of the user by means of specific tokens

Part of https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/6829

1 files changed, 59 insertions, 0 deletions

diff --git a/spec/support/shared_examples/features/archive_download_buttons_shared_examples.rb b/spec/support/shared_examples/features/archive_download_buttons_shared_examples.rb
new file mode 100644
index 00000000000..920fcbde483
--- /dev/null
+++ b/spec/support/shared_examples/features/archive_download_buttons_shared_examples.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+shared_examples 'archive download buttons' do
+  let(:formats) { %w(zip tar.gz tar.bz2 tar) }
+  let(:path_to_visit) { project_path(project) }
+  let(:ref) { project.default_branch }
+
+  context 'when static objects external storage is enabled' do
+    before do
+      allow_any_instance_of(ApplicationSetting).to receive(:static_objects_external_storage_url).and_return('https://cdn.gitlab.com')
+      visit path_to_visit
+    end
+
+    context 'private project' do
+      it 'shows archive download buttons with external storage URL prepended and user token appended to their href' do
+        formats.each do |format|
+          path = archive_path(project, ref, format)
+          uri = URI('https://cdn.gitlab.com')
+          uri.path = path
+          uri.query = "token=#{user.static_object_token}"
+
+          expect(page).to have_link format, href: uri.to_s
+        end
+      end
+    end
+
+    context 'public project' do
+      let(:project) { create(:project, :repository, :public) }
+
+      it 'shows archive download buttons with external storage URL prepended to their href' do
+        formats.each do |format|
+          path = archive_path(project, ref, format)
+          uri = URI('https://cdn.gitlab.com')
+          uri.path = path
+
+          expect(page).to have_link format, href: uri.to_s
+        end
+      end
+    end
+  end
+
+  context 'when static objects external storage is disabled' do
+    before do
+      visit path_to_visit
+    end
+
+    it 'shows default archive download buttons' do
+      formats.each do |format|
+        path = archive_path(project, ref, format)
+
+        expect(page).to have_link format, href: path
+      end
+    end
+  end
+
+  def archive_path(project, ref, format)
+    project_archive_path(project, id: "#{ref}/#{project.path}-#{ref}", path: nil, format: format)
+  end
+end