public function serializeAndHashFormFieldArrayWorks()
{
$formFieldArray = ['bla' => ['blubb' => 1, 'hu' => 1]];
$mockHash = '12345';
$hashService = $this->getAccessibleMock(Mvc\Controller\MvcPropertyMappingConfigurationService::class, ['appendHmac']);
$hashService->expects($this->once())->method('appendHmac')->with(serialize($formFieldArray))->will($this->returnValue(serialize($formFieldArray) . $mockHash));
$requestHashService = $this->getAccessibleMock(Mvc\Controller\MvcPropertyMappingConfigurationService::class, ['dummy']);
$requestHashService->_set('hashService', $hashService);
$expected = serialize($formFieldArray) . $mockHash;
$actual = $requestHashService->_call('serializeAndHashFormFieldArray', $formFieldArray);
$this->assertEquals($expected, $actual);
}