public function testRegisterXApi() { $serializerBuilder = $this->getMock('\\JMS\\Serializer\\SerializerBuilder'); $serializerBuilder->expects($this->once())->method('addMetadataDir'); $serializerBuilder->expects($this->once())->method('configureListeners'); $serializerBuilder->expects($this->once())->method('configureHandlers'); Serializer::registerXApi($serializerBuilder); }