/**
  * Method to test exists().
  *
  * @return void
  *
  * @covers Windwalker\Table\TableHelper::exists
  */
 public function testExists()
 {
     $helper = new TableHelper('#__test_table');
     $this->assertTrue($helper->exists(1));
     $this->assertTrue($helper->exists(2));
     $helper = new TableHelper('#__test_table2', null, 'pk');
     $this->assertTrue($helper->exists(1));
     $this->assertTrue($helper->exists(2));
     $this->assertTrue($helper->exists(3));
 }