@Test
public void testGetColumnIndex() {

	assertEquals(0, SpreadsheetUtils.getColumnIndex("A"));
	assertEquals(4, SpreadsheetUtils.getColumnIndex("E"));
	assertEquals(25, SpreadsheetUtils.getColumnIndex("Z"));
	assertEquals(26, SpreadsheetUtils.getColumnIndex("AA"));
	assertEquals(457833, SpreadsheetUtils.getColumnIndex("ZAFZ"));
}