/**
  * @depends testSetGetCurrencyList
  */
 public function testSetGetDisplayNames(SelectCurrency $element)
 {
     $this->assertInternalType('bool', $element->getDisplayNames(), 'Display names options should be initially set to a bool');
     $this->assertSame($element, $element->setDisplayNames(true));
     $this->assertTrue($element->getDisplayNames());
     $element->setDisplayNames(false);
     $this->assertFalse($element->getDisplayNames());
     return $element;
 }