lithium\tests\cases\storage\cache\adapter\FileTest::testWriteAndReadNull PHP Method

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