lithium\tests\cases\storage\cache\adapter\XCacheTest::testWriteAndReadNullMulti PHP Method

    public function testWriteAndReadNullMulti()
    {
        $expiry = '+1 minute';
        $keys = array('key1' => null, 'key2' => 'data2');
        $result = $this->XCache->write($keys);
        $this->assertTrue($result);
        $expected = $keys;
        $result = $this->XCache->read(array_keys($keys));
        $this->assertEqual($expected, $result);
        $keys = array('key1' => null, 'key2' => null);
        $result = $this->XCache->write($keys);
        $this->assertTrue($result);
    }