/**
  * @return array|null
  */
 protected function getDateParts()
 {
     if (is_null($this->datePartsChoices)) {
         $t = $this->translator;
         $this->datePartsChoices = array_map(function ($item) use($t) {
             return $t->trans($item);
         }, $this->dateModifiers->getDateParts());
     }
     return $this->datePartsChoices;
 }
 public function testDateParts()
 {
     $parts = $this->dateModifierProvider->getDateParts();
     $this->assertNotEmpty($parts);
     $this->assertCount(9, $parts);
 }