public function testCacheGetMetadataFor() {
$cache = new ArrayCache();
$this->cmf
->setCacheDriver($cache);
$loadedMetadata = $this->cmf
->getMetadataFor(__NAMESPACE__ . '\\ChildEntity');
$this
->assertSame($loadedMetadata, $cache
->fetch(__NAMESPACE__ . '\\ChildEntity$CLASSMETADATA'));
}