foreach ($values as $metatag => $metatag_value) {
$xpath = $this->xpath("//meta[@name='" . $metatag . "']");
$this->assertEqual(count($xpath), 1, 'Exactly one ' . $metatag . ' meta tag found.');
foreach ($values as $metatag => $metatag_value) {
$xpath = $this->xpath("//meta[@name='" . $metatag . "']");
$this->assertEqual(count($xpath), 1, 'Exactly one ' . $metatag . ' meta tag found.');