lib/split/experiment.rb in split-0.2.3 vs lib/split/experiment.rb in split-0.2.4

@@ -104,10 +104,13 @@
         raise 'Experiment not found'
       end
     end
 
     def self.find_or_create(key, *alternatives)
-      name = key.split(':')[0]
+      name = key.to_s.split(':')[0]
+
+      raise InvalidArgument, 'Alternatives must be strings' if alternatives.map(&:class).uniq != [String]
+
       if Split.redis.exists(name)
         if load_alternatives_for(name) == alternatives
           experiment = self.new(name, *load_alternatives_for(name))
         else
           exp = self.new(name, *load_alternatives_for(name))
\ No newline at end of file