minor: test fix

lib/mongo/node.rb

@@ -158,7 +158,7 @@ module Mongo
       if !config['hosts']
         message = "Will not connect to #{host_string} because it's not a member " +
           "of a replica set."
-        raise ConnectionFailure, message
+        raise ReplicaSetConnectionError, message
       end
     end
 
@@ -171,7 +171,7 @@ module Mongo
         elsif self.connection.replica_set_name != config['setName']
           message = "Attempting to connect to replica set '#{config['setName']}' on member #{host_string} " +
             "but expected '#{self.connection.replica_set_name}'"
-          raise ConnectionFailure, message
+          raise ReplicaSetConnectionError, message
         end
       end
     end

test/replica_sets/refresh_test.rb

@@ -69,7 +69,7 @@ class ReplicaSetRefreshTest < Test::Unit::TestCase
     assert_equal 2, @conn.secondary_pools.length
 
     RS.remove_secondary_node
-    sleep(3)
+    sleep(4)
 
     assert_equal 1, @conn.secondaries.length
     assert_equal 1, @conn.secondary_pools.length