More error prototyping

lib/js_test_san/test_case.rb

@@ -61,15 +61,24 @@ def webView_didFinishLoadForFrame(_, __)
       end
     end
 
-    # Catches file load errors:
+    # Catches resource load errors:
     #
     # webView.resourceLoadDelegate = self
+    #
     # def webView_resource_didFailLoadingWithError_fromDataSource(w,r,e,d)
     #   message = "#{e.userInfo['NSLocalizedDescription']}: #{e.userInfo['NSErrorFailingURLStringKey']}"
     #   @delegate.test_ran(Test.new(self, "Unable to load test case", :failed, message))
     #   @delegate.test_case_finished(self)
     # end
 
+    # Logs js errors:
+    #
+    # webView.setUIDelegate(self)
+    #
+    # def webView_addMessageToConsole(_, msg)
+    #   p msg
+    # end
+
     def handleEvent(event)
       element = event.target
       case element