Consolidate Blacklight::Solr::Document::MoreLikeThis into Blacklight:…

…:Solr::Document

app/models/concerns/blacklight/solr/document.rb

@@ -16,12 +16,13 @@
 #
 
 module Blacklight::Solr::Document
-  autoload :MoreLikeThis, 'blacklight/solr/document/more_like_this'
-
   extend ActiveSupport::Concern
   include Blacklight::Document
   include Blacklight::Document::ActiveModelShim
-  include Blacklight::Solr::Document::MoreLikeThis
+
+  def more_like_this
+    response.more_like(self).map { |doc| self.class.new(doc, response) }
+  end
 
   def has_highlight_field? k
     return false if response['highlighting'].blank? or response['highlighting'][self.id].blank?

spec/models/blacklight/solr/document_spec.rb

@@ -270,5 +270,16 @@ class MockDocument
 
     end
   end
-
+  describe '#more_like_this' do
+    let(:response) { instance_double(Blacklight::Solr::Response, :more_like => [{'id' => 'abc'}]) }
+    let(:document) { MockDocument.new({:id => '123'}, response) }
+    subject(:result) { document.more_like_this }
+
+    it "should pluck the MoreLikeThis results from the Solr Response" do
+      expect(result).to have(1).item
+      expect(result.first).to be_a_kind_of(MockDocument)
+      expect(result.first.id).to eq 'abc'
+      expect(result.first.solr_response).to eq response
+    end
+  end
 end