public function testMeminfo()
{
$snapshot = new Snapshot(__DIR__ . '/fakeproc');
$meminfo = $snapshot->meminfo();
$count = count($meminfo);
$this->assertEquals($count, 43);
// vim command to generate (most of) the following code from
// a /proc/meminfo snapshot:
// :32,74 s/\([a-zA-Z()_0-9]*\):\s*\([0-9]\{1,\}\) kB/$this->assertEquals($meminfo\['\1'\]\['value'], \2);/gc
$this->assertEquals($meminfo['MemTotal']['value'], 4050068);
$this->assertEquals($meminfo['MemFree']['value'], 1381148);
$this->assertEquals($meminfo['MemAvailable']['value'], 2800948);
$this->assertEquals($meminfo['Buffers']['value'], 412508);
$this->assertEquals($meminfo['Cached']['value'], 968388);
$this->assertEquals($meminfo['SwapCached']['value'], 0);
$this->assertEquals($meminfo['Active']['value'], 1966616);
$this->assertEquals($meminfo['Inactive']['value'], 473820);
$this->assertEquals($meminfo['Active(anon)']['value'], 1075384);
$this->assertEquals($meminfo['Inactive(anon)']['value'], 53592);
$this->assertEquals($meminfo['Active(file)']['value'], 891232);
$this->assertEquals($meminfo['Inactive(file)']['value'], 420228);
$this->assertEquals($meminfo['Unevictable']['value'], 32);
$this->assertEquals($meminfo['Mlocked']['value'], 32);
$this->assertEquals($meminfo['SwapTotal']['value'], 7911976);
$this->assertEquals($meminfo['SwapFree']['value'], 7911976);
$this->assertEquals($meminfo['Dirty']['value'], 56);
$this->assertEquals($meminfo['Writeback']['value'], 0);
$this->assertEquals($meminfo['AnonPages']['value'], 1059464);
$this->assertEquals($meminfo['Mapped']['value'], 196964);
$this->assertEquals($meminfo['Shmem']['value'], 69444);
$this->assertEquals($meminfo['Slab']['value'], 168280);
$this->assertEquals($meminfo['SReclaimable']['value'], 138088);
$this->assertEquals($meminfo['SUnreclaim']['value'], 30192);
$this->assertEquals($meminfo['KernelStack']['value'], 4528);
$this->assertEquals($meminfo['PageTables']['value'], 20768);
$this->assertEquals($meminfo['NFS_Unstable']['value'], 0);
$this->assertEquals($meminfo['Bounce']['value'], 0);
$this->assertEquals($meminfo['WritebackTmp']['value'], 0);
$this->assertEquals($meminfo['CommitLimit']['value'], 9937008);
$this->assertEquals($meminfo['Committed_AS']['value'], 2833516);
$this->assertEquals($meminfo['VmallocTotal']['value'], 34359738367);
$this->assertEquals($meminfo['VmallocUsed']['value'], 111084);
$this->assertEquals($meminfo['VmallocChunk']['value'], 34359537660);
$this->assertEquals($meminfo['HardwareCorrupted']['value'], 0);
$this->assertEquals($meminfo['AnonHugePages']['value'], 0);
$this->assertEquals($meminfo['HugePages_Total']['value'], 0);
$this->assertEquals($meminfo['HugePages_Free']['value'], 0);
$this->assertEquals($meminfo['HugePages_Rsvd']['value'], 0);
$this->assertEquals($meminfo['HugePages_Surp']['value'], 0);
$this->assertEquals($meminfo['Hugepagesize']['value'], 2048);
$this->assertEquals($meminfo['DirectMap4k']['value'], 91008);
$this->assertEquals($meminfo['DirectMap2M']['value'], 4102144);
}