@Test
public void singleAttributeWrite() throws Exception {

    JmxWriteRequest req =
            new JmxRequestBuilder(WRITE,"test:type=write")
                    .attribute("attr")
                    .value("val1")
                    .build();
    store.configure(new HistoryKey(req), new HistoryLimit(5, 0L));
    assertEquals("4 history entries",3,updateNTimesAsList(req,4).size());
}