/**
  * Method to test removeInstance().
  *
  * @return void
  *
  * @covers Windwalker\DataMapper\DataMapperContainer::removeInstance
  */
 public function testRemoveInstance()
 {
     $mapperBackup = DataMapperContainer::getInstance('#__content');
     DataMapperContainer::removeInstance('#__content');
     $mappers = TestHelper::getValue('Windwalker\\DataMapper\\DataMapperContainer', 'instances');
     $this->assertArrayNotHasKey('#__content', $mappers);
     $this->assertNotSame($mapperBackup, DataMapperContainer::getInstance('#__content'));
 }