FEATURE: Rake task to export and import category structure

spec/import_export/topic_exporter_spec.rb

@@ -0,0 +1,30 @@
+require "rails_helper"
+require "import_export/topic_exporter"
+
+describe ImportExport::TopicExporter do
+
+  let(:user) { Fabricate(:user) }
+  let(:topic) { Fabricate(:topic, user: user) }
+
+  context '.perform' do
+    it 'export a single topic' do
+      data = ImportExport::TopicExporter.new([topic.id]).perform.export_data
+
+      expect(data[:categories].blank?).to eq(true)
+      expect(data[:groups].blank?).to eq(true)
+      expect(data[:topics].count).to eq(1)
+      expect(data[:users].count).to eq(1)
+    end
+
+    it 'export multiple topics' do
+      topic2 = Fabricate(:topic, user: user)
+      data = ImportExport::TopicExporter.new([topic.id, topic2.id]).perform.export_data
+
+      expect(data[:categories].blank?).to eq(true)
+      expect(data[:groups].blank?).to eq(true)
+      expect(data[:topics].count).to eq(2)
+      expect(data[:users].count).to eq(1)
+    end
+  end
+
+end