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--TEST--
substringData() negative arguments
--EXTENSIONS--
dom
--FILE--
<?php
$dom = Dom\HTMLDocument::createEmpty();
$comment = $dom->createComment("foobarbaz");
var_dump($comment->substringData(0, -1));
echo $dom->saveHtml($comment), "\n";
var_dump($comment->substringData(2, -2));
echo $dom->saveHtml($comment), "\n";
try {
var_dump($comment->substringData(-2, 2));
} catch (DOMException $e) {
echo $e->getMessage(), "\n";
}
echo $dom->saveHtml($comment), "\n";
?>
--EXPECT--
string(9) "foobarbaz"
<!--foobarbaz-->
string(7) "obarbaz"
<!--foobarbaz-->
Index Size Error
<!--foobarbaz-->
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