public function testCrop()
{
// same as extract(), but amend internal value instead of returning a new string
$string = new Str('abcdefgh');
$fluent = $string->crop(1);
$this->assertSame($string, $fluent);
$this->assertEquals('bcdefgh', $string);
$string->crop(1, -1);
$this->assertEquals('cdefg', $string);
$string->crop(1, 1);
$this->assertEquals('d', $string);
// with accented charcaters
$string = new Str('chaîne accentuée');
$string->crop(3, 1);
$this->assertEquals('î', $string);
}
