### Question:
AlgorithmExecutor implements Closeable { @Override public void close() throws IOException { resultReceiver.close(); } AlgorithmExecutor(CloseableOmniscientResultReceiver resultReceiver,
                           FileGenerator fileGenerator); Execution executeAlgorithm(
    de.metanome.backend.results_db.Algorithm storedAlgorithm,
    List<ConfigurationValue> parameters,
    List<Input> inputs,
    String executionIdentifier,
    ExecutionSetting executionSetting); void setResultPathPrefix(String prefix); @Override void close();  }### Answer:
@Test public void testClose() throws IOException { executor.close(); verify(resultReceiver).close(); }