/**
* @covers ::fromString
* @covers ::parseString
* @covers ::parseRange
* @dataProvider provideIllegalRangeStrings
*
* @expectedException GanbaroDigital\TextTools\Exceptions\E4xx_CannotParseRange
*/
public function testThrowsExceptionWhenIllegalRangeReceived($range)
{
// ----------------------------------------------------------------
// setup your test
// ----------------------------------------------------------------
// perform the change
ExpandRange::fromString($range);
}
/**
* 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);
}
