Stop with bad_return_value on bad return in Agent

lbarratt · Aug 11, 2015 · 790173e · 790173e
1 parent 5284d17
commit 790173e
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/lib/elixir/lib/agent/server.ex b/lib/elixir/lib/agent/server.ex
@@ -13,8 +13,10 @@ defmodule Agent.Server do
   end
 
   def handle_call({:get_and_update, fun}, _from, state) do
-    {reply, state} = run(fun, [state])
-    {:reply, reply, state}
+    case run(fun, [state]) do
+      {reply, state} -> {:reply, reply, state}
+      other          -> {:stop, {:bad_return_value, other}, state}
+    end
   end
 
   def handle_call({:update, fun}, _from, state) do