public function testDecrement()
{
$value = 10;
$key = 'decrementKey';
$this->assertFalse($this->driver->get($key));
$this->assertFalse($this->driver->decrement($key));
$this->driver->set($key, $value);
$this->assertSame(9, $this->driver->decrement($key));
// Make sure we don't go below zero
$this->assertSame(0, $this->driver->decrement($key, 100));
$this->assertSame(0, $this->driver->get($key));
}