/**
* Asserts that the supplied <tt>XML</tt> represents a valid
* <tt>*lt;object></tt>.
* @param XmlElement $xml
* @throws \NullPointerException if the passed <tt>$xml</tt> is null.
* @throws \InvalidArgumentException if the <tt>$xml</tt> is invalud.
* @see \Rhapsody\SetupBundle\Parser\ObjectParser::assert()
*/
public function assert($xml)
{
if ($xml === null) {
throw new \NullPointerException('Unable to parse: null.');
}
if (!$xml instanceof XmlElement) {
throw new \InvalidArgumentException('Invalid input. ' . get_class($this) . ' expects an XmlElement');
}
$name = $xml->getName();
if (!in_array(strtolower($name), $this->elements)) {
throw new \InvalidArgumentException('The element: ' . $name . ' was not a valid object-element and could not be parsed by ' . get_class($this) . '.');
}
$className = $xml->getAttribute('class');
$ref = $xml->getAttribute('ref');
if (empty($className) && empty($ref)) {
throw new \InvalidArgumentException('An object must have either the "class" or "ref" attributes specified. Could not find either attributes in XML: ' . strval($xml));
}
}
public function testGetAttributeNonExistantWithDefault()
{
$xml = '<element greeting="hello" />';
$element = new XmlElement($xml);
$result = $element->getAttribute('subject', 'world');
$this->assertNotNull($result);
$this->assertEquals('world', $result);
}
