Symfony\Component\Cache\Tests\Adapter\TagAwareAdapterTest::testInvalidateTags PHP Method

    public function testInvalidateTags()
    {
        $pool = $this->createCachePool();
        $i0 = $pool->getItem('i0');
        $i1 = $pool->getItem('i1');
        $i2 = $pool->getItem('i2');
        $i3 = $pool->getItem('i3');
        $foo = $pool->getItem('foo');
        $pool->save($i0->tag('bar'));
        $pool->save($i1->tag('foo'));
        $pool->save($i2->tag('foo')->tag('bar'));
        $pool->save($i3->tag('foo')->tag('baz'));
        $pool->save($foo);
        $pool->invalidateTags(array('bar'));
        $this->assertFalse($pool->getItem('i0')->isHit());
        $this->assertTrue($pool->getItem('i1')->isHit());
        $this->assertFalse($pool->getItem('i2')->isHit());
        $this->assertTrue($pool->getItem('i3')->isHit());
        $this->assertTrue($pool->getItem('foo')->isHit());
        $pool->invalidateTags(array('foo'));
        $this->assertFalse($pool->getItem('i1')->isHit());
        $this->assertFalse($pool->getItem('i3')->isHit());
        $this->assertTrue($pool->getItem('foo')->isHit());
    }