Add spec for #2246

spec/uploader/serialization_spec.rb

@@ -0,0 +1,18 @@
+require 'spec_helper'
+
+describe CarrierWave::Uploader do
+  let(:uploader_class) do
+    Class.new(CarrierWave::Uploader::Base).tap do |c|
+      c.version :thumb
+    end
+  end
+  let(:uploader) { uploader_class.new }
+
+  after { FileUtils.rm_rf(public_path) }
+
+  describe '#serializable_hash' do
+    it "has string key for version value" do
+      expect(uploader.serializable_hash.keys).to include('thumb')
+    end
+  end
+end