Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in E:\phpProject\TEST\es\es_haiya\vendor\overtrue\pinyin\tests\ConverterStrategiesTest.php:13 Stack trace: #0 {main} thrown in E:\phpProject\TEST\es\es_haiya\vendor\overtrue\pinyin\tests\ConverterStrategiesTest.php on line 13