phpunit 报错 ErrorException: Declaration of Illuminate\Foundation\Testing\Assert::assertArraySubset($subset, $array, bool $checkForObjectIdentity = false, string $message = ''):

接上文，好不容易配置好phpunit 一运行命令：

phpunit tests/feature/exampletest

报错：

ErrorException: Declaration of Illuminate\Testing\Assert::assertArraySubset($subset, $array, bool $checkForIdentity = false, string $msg = ''): void should be compatible
with PHPUnit\Framework\Assert::assertArraySubset($subset, $array, $strict = false, $message = '')

解决办法：推测是因为 phpunit 版本跟 laravel 所需的版本不匹配，而且是低于 laravel 所需的版本，更新 phpunit.phar 可以解决

查看phpunit版本命令：

$ phpunit --version
PHPUnit x.y.z by Sebastian Bergmann and contributors.

重新下载最新版本的phpunit 8.5.8.phar，复制到之前安装phpunit的目录覆盖

之后重新输入命令：

$ phpunit --version
PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

成功了，现在我们再来单元测试：

$ phpunit tests/feature/exampletest
PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

Warning:       Invocation with class name is deprecated

.                                                                   1 / 1 (100%)

Time: 213 ms, Memory: 24.00 MB

OK (1 test, 1 assertion)

搞定，收工！