FIX: Post does not save if it contains a tag link

spec/components/pretty_text_spec.rb

@@ -421,4 +421,15 @@ HTML
     end
   end
 
+  describe "tag and category links" do
+
+    it "produces tag links" do
+      # TODO where is our tags table?
+      TopicCustomField.create!(topic_id: 1, name: DiscourseTagging::TAGS_FIELD_NAME, value: "known")
+      # TODO does it make sense to generate hashtags for tags that are missing in action?
+      expect(PrettyText.cook(" #unknown::tag #known::tag")).to match_html("<p> <span class=\"hashtag\">#unknown::tag</span> <a class=\"hashtag\" href=\"http://test.localhost/tags/known\">#<span>known</span></a></p>")
+    end
+
+  end
+
 end