public function testGetCachedMetadata() {
$metadata = $this
->getMock('Doctrine\\Common\\Persistence\\Mapping\\ClassMetadata');
$cache = new ArrayCache();
$cache
->save(__NAMESPACE__ . '\\ChildEntity$CLASSMETADATA', $metadata);
$this->cmf
->setCacheDriver($cache);
$loadedMetadata = $this->cmf
->getMetadataFor(__NAMESPACE__ . '\\ChildEntity');
$this
->assertSame($loadedMetadata, $metadata);
}