check that all items are atoms

Author: Awlex

lib/kaffy/resource_schema.ex

@@ -210,7 +210,7 @@ defmodule Kaffy.ResourceSchema do
       is_binary(value) ->
         String.slice(value, 0, 140)
 
-      is_list(value) ->
+      is_list(value) and Enum.any?(value, &is_atom/1) ->
         pretty_list(value)
 
       true ->
@@ -323,9 +323,7 @@ defmodule Kaffy.ResourceSchema do
   end
 
   defp pretty_list([]), do: ""
-  defp pretty_list([item] = list) when not is_binary(item), do: list
   defp pretty_list([item]), do: to_string(item)
-  defp pretty_list([a | _rest] = list) when not is_binary(a), do: list
   defp pretty_list([a, b]), do: "#{a} and #{b}"
   defp pretty_list([a, b, c]), do: "#{a}, #{b} and #{c}"
   defp pretty_list([a, b, c, d]), do: "#{a}, #{b}, #{c} and #{d}"