public function testClassCanBeRemoved()
{
$tag = new HtmlTag('somename');
$tag->addClass(array('class1', 'class2', 'class3'));
$tag->removeClass('class2');
$test_classes = $tag->getClasses();
self::assertFalse(strpos('class2', $test_classes));
// Remove one from the end
$tag->removeClass('class3');
$test_classes = $tag->getClasses();
self::assertFalse(strpos('class3', $test_classes));
// Don't accidentally remove class1 when removing class
$tag->removeClass('class');
self::assertEquals($test_classes, $tag->getClasses());
}