1 files changed, 51 insertions, 0 deletions
diff --git a/lib/stdlib/test/format_SUITE.erl b/lib/stdlib/test/format_SUITE.erl
new file mode 100644
index 0000000000..2c415894f4
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+++ b/lib/stdlib/test/format_SUITE.erl
@@ -0,0 +1,51 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 1998-2009. All Rights Reserved.
+%% 
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%% 
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%% 
+%% %CopyrightEnd%
+%%
+-module(format_SUITE).
+-export([all/1]).
+
+-export([hang_1/1]).
+
+-export([init_per_testcase/2, fin_per_testcase/2]).
+
+-include("test_server.hrl").
+
+% Default timetrap timeout (set in init_per_testcase).
+-define(default_timeout, ?t:minutes(1)).
+
+init_per_testcase(_Case, Config) ->
+    ?line Dog = ?t:timetrap(?default_timeout),
+    [{watchdog, Dog} | Config].
+fin_per_testcase(_Case, Config) ->
+    Dog = ?config(watchdog, Config),
+    test_server:timetrap_cancel(Dog),
+    ok.
+
+all(doc) ->
+    ["Test cases for io:format/[2,3]."];
+all(suite) ->
+    [hang_1].
+
+hang_1(doc) ->
+    ["Bad args can hang (OTP-2400)"];
+hang_1(suite) ->
+    [];
+hang_1(Config) when list(Config) ->
+    ?line _ = (catch io:format(a, "", [])),
+    ?line _ = (catch io:format({}, "", [])),
+    ok.