@Test
public void lessThanOrEqualsTo() {

  Object value = new Object();
  doReturn(entry).when(map).lowerEntry(value);
  doReturn(result).when(rangeIndex).lessThan(value);
  doNothing().when(rangeIndex).equalsTo(value, result);
  rangeIndex.lessThanOrEqualsTo(value);
  verify(rangeIndex).lessThan(value);
  verify(rangeIndex).equalsTo(value, result);
}