@Test
public void testGetRelevantNwpDirs_threeMeasurements() throws IOException {

    when(array.getSize()).thenReturn(3L);
    when(array.getInt(0)).thenReturn(176093689);
    when(array.getInt(1)).thenReturn(176094298);
    when(array.getInt(2)).thenReturn(176098678);
    final List<String> relevantNwpDirs = NwpUtil.getRelevantNwpDirs(variable, null);
    assertNotNull(relevantNwpDirs);
    assertEquals(6, relevantNwpDirs.size());
    assertEquals("1983/07/29", relevantNwpDirs.get(0));
    assertEquals("1983/08/01", relevantNwpDirs.get(3));
    assertEquals("1983/08/03", relevantNwpDirs.get(5));
}