function test_cleanupContainerNames()
{
$html = '<html><head>' . '</head><body>' . '<div class="sc-content-cnt1"></div>' . '<div class="sc-content-_cnt_12345"></div>' . '<div class="test sc-content-_cnt_abcd some"></div>' . '<div class="sc-content-"></div>' . '</body></html>';
$page = new Page($html);
$page->cleanupContainerNames();
$cnts = $page->containers();
$this->assertTrue(is_array($cnts));
$this->assertEquals(1, count($cnts));
$this->assertTrue(in_array('cnt1', $cnts));
}
