Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in E:\www\API\mod_send\lib\aliyun-php-sdk-dm\aliyun-php-sdk-core\UnitTest\Auth\ShaHmac1SignerTest.php:21 Stack trace: #0 {main} thrown in E:\www\API\mod_send\lib\aliyun-php-sdk-dm\aliyun-php-sdk-core\UnitTest\Auth\ShaHmac1SignerTest.php on line 21