stdlib: Make gen_fsm callbacks optional

1 files changed, 48 insertions, 0 deletions

diff --git a/lib/stdlib/test/gen_fsm_SUITE_data/oc_fsm.erl b/lib/stdlib/test/gen_fsm_SUITE_data/oc_fsm.erl
new file mode 100644
index 0000000000..27fb1bc3b6
--- /dev/null
+++ b/lib/stdlib/test/gen_fsm_SUITE_data/oc_fsm.erl
@@ -0,0 +1,48 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(oc_fsm).
+
+-behaviour(gen_fsm).
+
+%% API
+-export([start/0]).
+
+%% gen_fsm callbacks
+-export([init/1,
+         state_name/2,
+         state_name/3]).
+
+-define(SERVER, ?MODULE).
+
+-record(state, {}).
+
+start() ->
+    gen_fsm:start({local, ?SERVER}, ?MODULE, [], []).
+
+init([]) ->
+    {ok, state_name, #state{}}.
+
+state_name(_Event, State) ->
+    {next_state, state_name, State}.
+
+state_name(_Event, _From, State) ->
+    Reply = ok,
+    {reply, Reply, state_name, State}.
+