/**
* @param mixed $id
*
* @throws IdentifierArgumentIsNotScalar
*/
protected function guardType($id)
{
if (!Str::isValid($id)) {
throw new IdentifierArgumentIsNotScalar(gettype($id));
}
}
/**
* @dataProvider splitStringProvider
*/
public function testGetWords($string, array $expected_words)
{
$str = new Str($string);
$this->assertEquals($expected_words, $str->getWords());
}