public function testSetMinCacheFileSize()
 {
     $pc = new PageCache();
     $pc->setMinCacheFileSize(0);
     $this->assertAttributeSame(0, 'min_cache_file_size', $pc);
     $pc->setMinCacheFileSize(10000);
     $this->assertAttributeSame(10000, 'min_cache_file_size', $pc);
 }