public function testExecute()
{
$command = $this->getCommand();
$commandTester = new CommandTester($command);
$commandTester->execute([]);
$result = $commandTester->getDisplay();
if (!$this->isTurpentineEnabled()) {
$this->assertRegExp('/^(.*?(Turpentine is not enabled or installed.)[^$]*)$/m', $result);
} else {
$command = $this->getCommand();
$commandTester = new CommandTester($command);
$commandTester->execute([]);
$result = $commandTester->getDisplay();
$this->assertRegExp('/^(.*?(Flushed cached varnish URL\'s)[^$]*)$/m', $result);
}
}