added missing transaction wrapper

Author: sterlp

core/src/main/java/org/sterl/spring/persistent_tasks/scheduler/SchedulerService.java

@@ -108,7 +108,7 @@ public List<Future<TriggerKey>> triggerNextTasks(OffsetDateTime timeDue) {
             triggers = Collections.emptyList();
         }
         var result = taskExecutor.submit(triggers);
-        pingRegistry();
+        trx.executeWithoutResult(t -> this.pingRegistry());
         return result;
     }
 

core/src/test/java/org/sterl/spring/persistent_tasks/scheduler/SchedulerServiceTest.java

@@ -44,7 +44,7 @@ void testWillTriggerOnlyFreeThreadSize() throws Exception {
         for (int i = 0; i < 15; i++) {
             triggerService.queue(TaskTriggerBuilder
                     .newTrigger("slowTask")
-                    .state(50L)
+                    .state(200L)
                     .build()
                 );
         }
@@ -53,9 +53,9 @@ void testWillTriggerOnlyFreeThreadSize() throws Exception {
         subject.triggerNextTasks();
 
         // THEN
-        Thread.sleep(15);
         assertThat(triggerService.countTriggers(TriggerStatus.RUNNING)).isEqualTo(10);
         assertThat(triggerService.countTriggers(TriggerStatus.WAITING)).isEqualTo(5);
+
         // AND
         final SchedulerEntity scheduler = subject.getScheduler();
         assertThat(scheduler.getRunnungTasks()).isEqualTo(10);