@Override
    public long getStatusTimestamp(JobStatus status) {
        return stateTimestamps[status.ordinal()];
    }
@Test
    void getStatusTimestamp() {
        final JobStatusStore store = new JobStatusStore(0L);
        store.jobStatusChanges(new JobID(), JobStatus.RUNNING, 1L);

        assertThat(store.getStatusTimestamp(JobStatus.RUNNING), is(1L));
    }