public function testReplace()
{
$string = new Str('abcde');
$this->assertEquals('abc_DE_de', $string->replace('de', '_DE_de')->getInternalValue());
$this->assertEquals('abc_de', $string->replace('_DE', '', Str::CASE_SENSITIVE)->getInternalValue());
// same thing using a regexp
$string = new Str('abcde');
$this->assertEquals('abc_DE_de', $string->replace('/d./', '_DE_de', Str::REGEXP)->getInternalValue());
// $string->replace('/d./', '_DE_de', Str::REGEXP)->getInternalValue()
}
