public function testMultiWriteAndRead()
{
$keys = array('write1' => 'value1', 'write2' => 'value2');
$expiry = null;
$result = $this->Memory->write($keys, $expiry);
$this->assertTrue($result);
$this->assertEqual($this->Memory->cache, $result);
$result = $this->Memory->read(array_keys($keys));
$this->assertEqual($keys, $result);
}