public function testIReplace()
{
$this->eq(s::iReplace('abcXabc', 'x', 'y'), 'abcyabc');
$this->eq(s::iReplace('afoOBara', 'foobar', 'b'), 'aba');
$this->eq(s::iReplace('aaxYaaaXya', 'xy', 'b'), 'aabaaaba');
$this->eq(s::iReplace('', 'abc', ''), '');
$this->eq(s::iReplace('abc', '', 'x'), 'xaxbxcx');
$this->eq(s::iReplace('', '', 'x'), 'x');
}
public function iReplaceAndCount($old, $new)
{
$r = s::iReplace($this->value, self::unwrap($old), self::unwrap($new));
$r[0] = new self($r[0]);
return $r;
}
