@Test
public void noNextCalls() throws IOException {

    HeapOutputStream buffer = new HeapOutputStream();
    try (BdioWriter writer = new BdioWriter(metadata, new BdioFile(buffer))) {
        writer.start();
    }
    List<String> entries = BdioTest.zipEntries(buffer.getInputStream());
    assertThat(entries).hasSize(1);
    assertThatJson(entries.get(0)).at("/@id").isEqualTo(metadata.id());
    assertThatJson(entries.get(0)).arrayAt("/@graph").hasSize(0);
}