public function testGetCaptions()
 {
     $mm = new MultimediaObject();
     $this->dm->persist($mm);
     $this->dm->flush();
     $captions = $this->materialService->getCaptions($mm)->toArray();
     $this->assertEquals(0, count($captions));
     $material1 = new Material();
     $material2 = new Material();
     $material3 = new Material();
     $material4 = new Material();
     $material5 = new Material();
     $material1->setMimeType('pdf');
     $material2->setMimeType('vtt');
     $material3->setMimeType('vtt');
     $material4->setMimeType('pdf');
     $material5->setMimeType('vtt');
     $mm->addMaterial($material1);
     $mm->addMaterial($material2);
     $mm->addMaterial($material3);
     $mm->addMaterial($material4);
     $mm->addMaterial($material5);
     $this->dm->persist($mm);
     $this->dm->flush();
     $captions = $this->materialService->getCaptions($mm)->toArray();
     $this->assertEquals(3, count($captions));
     $this->assertFalse(in_array($material1, $captions));
     $this->assertTrue(in_array($material2, $captions));
     $this->assertTrue(in_array($material3, $captions));
     $this->assertFalse(in_array($material4, $captions));
     $this->assertTrue(in_array($material5, $captions));
 }
 /**
  * Save form data of Material
  *
  * @return Material $material
  */
 private function saveFormData(Material $material, $formData)
 {
     if (array_key_exists('i18n_name', $formData)) {
         $material->setI18nName($formData['i18n_name']);
     }
     if (array_key_exists('hide', $formData)) {
         $material->setHide($formData['hide']);
     }
     if (array_key_exists('language', $formData)) {
         $material->setLanguage($formData['language']);
     }
     if (array_key_exists('mime_type', $formData)) {
         $material->setMimeType($formData['mime_type']);
     }
     return $material;
 }