private void assertEvent(Class<? extends VFileEvent> type, String... paths) {
    List<VFileEvent> events = getEvents(type.getSimpleName(), null);
    assertEquals(events.toString(), paths.length, events.size());

    Set<String> pathSet =
        ContainerUtil.map2Set(
            paths,
            new Function<String, String>() {
              @Override
              public String fun(final String path) {
                return FileUtil.toSystemIndependentName(path);
              }
            });

    for (VFileEvent event : events) {
      assertTrue(event.toString(), type.isInstance(event));
      VirtualFile eventFile = event.getFile();
      assertNotNull(event.toString(), eventFile);
      assertTrue(
          eventFile + " not in " + Arrays.toString(paths), pathSet.remove(eventFile.getPath()));
    }
  }