public void assertDeleteContent(Store store, DirectoryService service) throws IOException { store.deleteContent(); assertThat( Arrays.toString(store.directory().listAll()), store.directory().listAll().length, equalTo(0)); assertThat(store.stats().sizeInBytes(), equalTo(0l)); for (Directory dir : service.build()) { assertThat(dir.listAll().length, equalTo(0)); } }