### Question:
ReplicationRunner implements ApplicationRunner, ExitCodeGenerator { @Override public int getExitCode() { return 0; } @Autowired  ReplicationRunner(MetaStoreEventReader eventReader, ReplicationMetaStoreEventListener listener); @Override void run(ApplicationArguments args); @Override int getExitCode(); void stop();  }### Answer:
@Test public void exitCode() { assertThat(runner.getExitCode()).isEqualTo(0); }