/**
* @covers ::from
* @dataProvider provideRangesToExpand
*/
public function testCanCallStatically($range, $expectedResult)
{
// ----------------------------------------------------------------
// setup your test
// ----------------------------------------------------------------
// perform the change
$actualResult = ExpandRange::from($range);
// ----------------------------------------------------------------
// test the results
$this->assertEquals($expectedResult, $actualResult);
}
/**
* extract the columns from an array of strings
*
* @param array|Traversable $data
* the data to be filtered
* @param string $columnNos
* the columns to be extracted
* @param string $columnSeparator
* the column delimiter
* @return array
* a list of the filtered strings
*/
public static function fromTraversable($data, $columnNos, $columnSeparator)
{
// robustness!
RequireTraversable::checkMixed($data, E4xx_UnsupportedType::class);
RequireStringy::checkMixed($columnNos, E4xx_UnsupportedType::class);
RequireStringy::checkMixed($columnSeparator, E4xx_UnsupportedType::class);
$colsToMatch = array_flip(ExpandRange::from($columnNos));
return self::filterArray($data, $columnSeparator, $colsToMatch);
}
