1 files changed, 35 insertions, 0 deletions
diff --git a/spec/services/bulk_imports/tree_export_service_spec.rb b/spec/services/bulk_imports/tree_export_service_spec.rb
new file mode 100644
index 00000000000..f2ed747b64e
--- /dev/null
+++ b/spec/services/bulk_imports/tree_export_service_spec.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe BulkImports::TreeExportService do
+  let_it_be(:project) { create(:project) }
+  let_it_be(:export_path) { Dir.mktmpdir }
+  let_it_be(:relation) { 'issues' }
+
+  subject(:service) { described_class.new(project, export_path, relation) }
+
+  describe '#execute' do
+    it 'executes export service and archives exported data' do
+      expect_next_instance_of(Gitlab::ImportExport::Json::StreamingSerializer) do |serializer|
+        expect(serializer).to receive(:serialize_relation)
+      end
+
+      subject.execute
+    end
+
+    context 'when unsupported relation is passed' do
+      it 'raises an error' do
+        service = described_class.new(project, export_path, 'unsupported')
+
+        expect { service.execute }.to raise_error(BulkImports::Error, 'Unsupported relation export type')
+      end
+    end
+  end
+
+  describe '#exported_filename' do
+    it 'returns filename of the exported file' do
+      expect(subject.exported_filename).to eq('issues.ndjson')
+    end
+  end
+end