CacheTest::testCacheFileFlush PHP Method

    public function testCacheFileFlush()
    {
        $frontCache = new Phalcon\Cache\Frontend\Data(array('lifetime' => 10));
        // File
        $cache = new Phalcon\Cache\Backend\File($frontCache, array('cacheDir' => 'unit-tests/cache/'));
        $cache->save('data', "1");
        $cache->save('data2', "2");
        $this->assertTrue($cache->flush());
        $this->assertFalse(file_exists('unit-tests/cache/data'));
        $this->assertFalse(file_exists('unit-tests/cache/data2'));
    }