public function testBuildToString()
{
$this->attrs->disableValidation();
$this->attrs->add('my-attr', 'my-value')->add('id', '9993')->add('class', 'my-class');
$expected = 'my-attr="my-value" id="9993" class="my-class"';
$this->expectOutputString($expected);
echo $this->attrs;
}
