public function testSetDeserializationContext()
{
$contextFactoryMock = $this->getMockForAbstractClass('JMS\\Serializer\\ContextFactory\\DeserializationContextFactoryInterface');
$context = new DeserializationContext();
$contextFactoryMock->expects($this->once())->method('createDeserializationContext')->will($this->returnValue($context));
$this->builder->setDeserializationContextFactory($contextFactoryMock);
$serializer = $this->builder->build();
$result = $serializer->deserialize('{"value":null}', 'array', 'json');
$this->assertEquals(array('value' => null), $result);
}