private <T extends SoftwareProcess> void assertStreams(T softwareProcessEntity) { Set<Task<?>> tasks = BrooklynTaskTags.getTasksInEntityContext(mgmt.getExecutionManager(), softwareProcessEntity); Task<?> subTask = findTaskOrSubTask(tasks, TaskPredicates.displayNameMatches(StringPredicates.matchesRegex("open iptables.*"))).get(); String stdout = AbstractSoftwareProcessStreamsTest.getStreamOrFail(subTask, BrooklynTaskTags.STREAM_STDOUT); String msg = "stdout="+stdout; assertNotEquals(stdout, "", msg); }