[*] Tests - Make the CI pass all tests

Author: arnaudbesnier

app/services/forest_liana/resources_getter.rb

@@ -70,7 +70,11 @@ def includes_for_serialization
     private
 
     def get_fields_to_serialize
-      @params[:fields][@collection_name].split(',').map { |name| name.to_sym }
+      if @params[:fields] && @params[:fields][@collection_name]
+        @params[:fields][@collection_name].split(',').map { |name| name.to_sym }
+      else
+        []
+      end
     end
 
     def get_segment