public function testOtoRelationship()
{
$mapper = new AnnotationMapper();
$user = new User();
$user_meta = $mapper->getEntityMetadata($user);
$relationships = $user_meta->getRelationships();
$this->assertCount(1, $relationships);
$address_relationship = $user_meta->getRelationshipByName('address');
$this->assertEquals(User::class, $address_relationship->getSource());
$this->assertEquals(Address::class, $address_relationship->getTarget());
$this->assertEquals('user', $address_relationship->getInversedBy());
$this->assertEquals(RelationshipType::ONETOONE(), $address_relationship->getRelationshipType());
}