public function testNl2br_deep()
{
$origin = "A string\nwith breakline.";
$expected = "A string<br />\nwith breakline.";
$this->assertEquals($expected, Html::nl2br_deep($origin));
$origin = ["Another string\nwith breakline.", "And another\none"];
$expected = ["Another string<br />\nwith breakline.", "And another<br />\none"];
$this->assertEquals($expected, Html::nl2br_deep($origin));
}