public function testDelayedFlush()
{
$mock = new MemcachedMock();
$this->assertFalse($mock->flush());
$this->assertFalse($mock->flush(10));
$testKey = 'flush123';
$testValue = 4455;
$mock = $this->getMemcachedMock();
$mock->setThrowExceptionsOnFailure(false);
$this->assertFalse($mock->flush('_invalid_'));
$mock->setThrowExceptionsOnFailure(true);
$mock->set($testKey, $testValue);
$this->assertSame($testValue, $mock->get($testKey));
$this->assertTrue($mock->flush(1));
$this->assertSame($testValue, $mock->get($testKey));
sleep(1);
$this->assertFalse($mock->get($testKey));
}
