public function setUsesProvidedLifetime()
{
$defaultLifetime = 3600;
$this->backend->setDefaultLifetime($defaultLifetime);
$expected = ['ex' => 1600];
$this->redis->expects($this->any())->method('multi')->willReturn($this->redis);
$this->redis->expects($this->once())->method('set')->with($this->anything(), $this->anything(), $expected)->willReturn($this->redis);
$this->backend->set('foo', 'bar', [], 1600);
}