Add basic test

This requires Erlang 19 because it uses local sockets during tests.
Still main code is compatible with any previous Erlang versions where
NIF API is available.

Signed-off-by: Peter Lemenkov <lemenkov@redhat.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/test/sd_notify_test.erl b/test/sd_notify_test.erl
new file mode 100644
index 0000000..09d74ee
--- /dev/null
+++ b/test/sd_notify_test.erl
@@ -0,0 +1,27 @@
+-module(sd_notify_test).
+
+-include_lib("eunit/include/eunit.hrl").
+
+sd_notify_test_() ->
+	{ok, CWD} = file:get_cwd(),
+	FakeNotifyUnixSockName = CWD ++ "/fake-notify-udp-sock-" ++ integer_to_list(erlang:phash2(make_ref())),
+	TestMessage = integer_to_list(erlang:phash2(make_ref())),
+	{ok, FakeNotifyUnixSock} = gen_udp:open(0, [{ifaddr, {local, FakeNotifyUnixSockName}}, {active, false}, list]),
+	os:putenv("NOTIFY_SOCKET", FakeNotifyUnixSockName),
+
+	{setup,
+		fun() -> ok end,
+		fun(_) -> ok = gen_udp:close(FakeNotifyUnixSock), ok = file:delete(FakeNotifyUnixSockName)  end,
+		[
+			{
+				"Try sending message",
+				fun() ->
+					sd_notify:sd_pid_notify_with_fds(0, 0, TestMessage, [1, 2, 3]),
+					{ok, {_Address, _Port, Packet}} = gen_udp:recv(FakeNotifyUnixSock, length(TestMessage), 1000),
+					?assertEqual(TestMessage, Packet)
+				end
+			}
+
+		]
+
+	}.