*/ public function dataProviderForTestGetColumnIndexFromCellIndex() { return [ ['A1', 0], ['Z3', 25], ['AA5', 26], ['AB24', 27], ['BC5', 54], ['BCZ99', 1455], ]; } /** * @dataProvider dataProviderForTestGetColumnIndexFromCellIndex * * @param string $cellIndex * @param int $expectedColumnIndex * @return void */ public function testGetColumnIndexFromCellIndex($cellIndex, $expectedColumnIndex) { $this->assertEquals($expectedColumnIndex, CellHelper::getColumnIndexFromCellIndex($cellIndex)); } /** * @return void */ public function testGetColumnIndexFromCellIndexShouldThrowIfInvalidCellIndex() { $this->expectException(InvalidArgumentException::class); CellHelper::getColumnIndexFromCellIndex('InvalidCellIndex'); } }