public function testMetadataMapping()
{
$metadata = $this->dm->getClassMetadata($this->type);
$this->assertArrayHasKey('embeds', $metadata->fieldMappings);
$mapping = $metadata->fieldMappings['embeds'];
$this->assertEquals('mixed', $mapping['type']);
$this->assertEquals('many', $mapping['embedded']);
$this->assertEquals($this->embeddedType, $mapping['targetDocument']);
}