public function testGetUnitPrecisionByUnitCode()
 {
     $unit = new ProductUnit();
     $unit->setCode('kg')->setDefaultPrecision(3);
     $unitPrecision = new ProductUnitPrecision();
     $unitPrecision->setUnit($unit)->setPrecision($unit->getDefaultPrecision());
     $product = new Product();
     $product->addUnitPrecision($unitPrecision);
     $this->assertNull($product->getUnitPrecision('item'));
     $this->assertEquals($unitPrecision, $product->getUnitPrecision('kg'));
 }
 /**
  * @param Product   $product
  * @param string    $unitCode
  * @param float|int $quantity
  *
  * @return float|int Rounded quantity
  */
 public function roundProductQuantity(Product $product, $unitCode, $quantity)
 {
     $unitPrecision = $product->getUnitPrecision($unitCode);
     if ($unitPrecision) {
         $quantity = $this->roundingService->round($quantity, $unitPrecision->getPrecision());
     }
     return $quantity;
 }