fixes #35

Author: zookzook

lib/mongo/cursor.ex

@@ -91,6 +91,7 @@ defmodule Mongo.Cursor do
           end
 
         state(docs: docs) = state -> {docs, state(state, docs: [])}
+        {:error, error}           -> raise error  ## In case of an error, we should raise the error
       end
     end
 

test/mongo/cursor_test.exs

@@ -20,4 +20,13 @@ defmodule Mongo.CursorTest do
     assert {:ok, _} = Mongo.insert_many(c.pid, coll, docs)
     assert [%{"foo" => 42}, %{"foo" => 42}] = Mongo.find(c.pid, coll, %{}, limit: 2) |> Enum.to_list |> Enum.map(fn m ->  Map.pop(m, "_id") |> elem(1) end)
   end
+
+  # issue #35: Crash executing find function without enough permission
+  test "matching errors in the next function of the stream api", c do
+    # this is not valid, so we get an exception
+    assert_raise Mongo.Error, fn ->
+      Mongo.find(c.pid, "test", [_id: ["$gth": 1]]) |> Enum.to_list()
+    end
+  end
+
 end