@Test
public void testWriteCellWithNull() throws Exception {
calendarConverter.writeCell(mockCell, null);
verify(mockCell, never()).setCellValue(any(Calendar.class));
}
@Test
public void testWriteCell() throws Exception {
final Calendar calendar = Calendar.getInstance();
calendarConverter.writeCell(mockCell, calendar);
verify(mockCell).setCellValue(calendar);
}
