tests passing

lib/liquid/tags/render.rb

@@ -69,15 +69,16 @@ module Liquid
       # Inline snippets take precedence over external snippets
       if (inline_snippet = context.registers[:inline_snippet][template_name])
         inner_context = context.new_isolated_subcontext
-        # binding.irb
+
         snippet_body = inline_snippet[:body]
         snippet_args = inline_snippet[:args]
-
         # Validate and set the arguments in the inner context
         @attributes.each do |key, value|
-          if snippet_args.include?(key)
-            inner_context[key] = context.evaluate(value)
+          unless snippet_args.include?(key)
+            raise Liquid::ArgumentError, "Invalid argument `#{key}` for snippet `#{template_name}`"
           end
+
+          inner_context[key] = context.evaluate(value)
         end
 
         return output << snippet_body.render(inner_context)