public function testClearPrivatePool()
{
$tester = $this->createCommandTester();
$tester->execute(array('pools' => array('cache.private_pool')), array('decorated' => false));
$this->assertSame(0, $tester->getStatusCode(), 'cache:pool:clear exits with 0 in case of success');
$this->assertContains('Clearing cache pool: cache.private_pool', $tester->getDisplay());
$this->assertContains('[OK] Cache was successfully cleared.', $tester->getDisplay());
}