Add small test suite for events logging

tests/unit/events.bats

@@ -0,0 +1,36 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  create_app
+}
+
+teardown() {
+  destroy_app
+}
+
+@test "(events) check conffiles" {
+  test -f /etc/logrotate.d/dokku
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+  test -f /etc/rsyslog.d/99-dokku.conf
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+  stats -c '%U:%G:%a' /var/log/dokku.log
+  echo "output: "$output
+  echo "status: "$status
+  assert_output "syslog:dokku:644"
+}
+
+@test "(events) log commands" {
+  run dokku events:on
+  deploy_app
+  run dokku events
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+  run dokku events:off
+}