1 files changed, 106 insertions, 0 deletions
diff --git a/spec/services/projects/hashed_storage/rollback_attachments_service_spec.rb b/spec/services/projects/hashed_storage/rollback_attachments_service_spec.rb
new file mode 100644
index 00000000000..815c85e0866
--- /dev/null
+++ b/spec/services/projects/hashed_storage/rollback_attachments_service_spec.rb
@@ -0,0 +1,106 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Projects::HashedStorage::RollbackAttachmentsService do
+  subject(:service) { described_class.new(project, logger: nil) }
+
+  let(:project) { create(:project, :repository, skip_disk_validation: true) }
+  let(:legacy_storage) { Storage::LegacyProject.new(project) }
+  let(:hashed_storage) { Storage::HashedProject.new(project) }
+
+  let!(:upload) { Upload.find_by(path: file_uploader.upload_path) }
+  let(:file_uploader) { build(:file_uploader, project: project) }
+  let(:old_disk_path) { File.join(base_path(hashed_storage), upload.path) }
+  let(:new_disk_path) { File.join(base_path(legacy_storage), upload.path) }
+
+  context '#execute' do
+    context 'when succeeds' do
+      it 'moves attachments to legacy storage layout' do
+        expect(File.file?(old_disk_path)).to be_truthy
+        expect(File.file?(new_disk_path)).to be_falsey
+        expect(File.exist?(base_path(hashed_storage))).to be_truthy
+        expect(File.exist?(base_path(legacy_storage))).to be_falsey
+        expect(FileUtils).to receive(:mv).with(base_path(hashed_storage), base_path(legacy_storage)).and_call_original
+
+        service.execute
+
+        expect(File.exist?(base_path(legacy_storage))).to be_truthy
+        expect(File.exist?(base_path(hashed_storage))).to be_falsey
+        expect(File.file?(old_disk_path)).to be_falsey
+        expect(File.file?(new_disk_path)).to be_truthy
+      end
+
+      it 'returns true' do
+        expect(service.execute).to be_truthy
+      end
+
+      it 'sets skipped to false' do
+        service.execute
+
+        expect(service.skipped?).to be_falsey
+      end
+    end
+
+    context 'when original folder does not exist anymore' do
+      before do
+        FileUtils.rm_rf(base_path(hashed_storage))
+      end
+
+      it 'skips moving folders and go to next' do
+        expect(FileUtils).not_to receive(:mv).with(base_path(hashed_storage), base_path(legacy_storage))
+
+        service.execute
+
+        expect(File.exist?(base_path(legacy_storage))).to be_falsey
+        expect(File.file?(new_disk_path)).to be_falsey
+      end
+
+      it 'returns true' do
+        expect(service.execute).to be_truthy
+      end
+
+      it 'sets skipped to true' do
+        service.execute
+
+        expect(service.skipped?).to be_truthy
+      end
+    end
+
+    context 'when target folder already exists' do
+      before do
+        FileUtils.mkdir_p(base_path(legacy_storage))
+      end
+
+      it 'raises AttachmentCannotMoveError' do
+        expect(FileUtils).not_to receive(:mv).with(base_path(legacy_storage), base_path(hashed_storage))
+
+        expect { service.execute }.to raise_error(Projects::HashedStorage::AttachmentCannotMoveError)
+      end
+    end
+
+    it 'works even when project validation fails' do
+      allow(project).to receive(:valid?) { false }
+
+      expect { service.execute }.to change { project.hashed_storage?(:attachments) }.to(false)
+    end
+  end
+
+  context '#old_disk_path' do
+    it 'returns old disk_path for project' do
+      expect(service.old_disk_path).to eq(project.disk_path)
+    end
+  end
+
+  context '#new_disk_path' do
+    it 'returns new disk_path for project' do
+      service.execute
+
+      expect(service.new_disk_path).to eq(project.full_path)
+    end
+  end
+
+  def base_path(storage)
+    File.join(FileUploader.root, storage.disk_path)
+  end
+end