Recommend to load fixtures in `function _before()` and set `cleanup: false`?

I'm observing that with `cleanup: true`, running external commands with `$I->runShellCommand('php bin/console ...');` isn't working. I'm guessing this is due to the transaction, which prevents external processes to "see" the database contents created/modified by the test. Can you confirm this?

If so, I would suggest to change the recommendation at https://codeception.com/docs/modules/Doctrine to `cleanup: false`, and show people how to load their fixtures in `function _before()`:
```php
$I->runShellCommand('php bin/console doctrine:fixtures:load --no-interaction --env=test');
```

IMO the currently recommended way to cleanup after each test doesn't work out, since for *some tests* it's necessary to disable the transaction (see above) - which ultimately leads to a mess.
So I'm figuring the best approach would be to just reload the fixtures before each test.

What do you think? How do you handle that?

首先阅读 https://codeception.com/docs/modules/Doctrine 上的 Doctrine 模块文档，以及 issue 中使用 cleanup、_before()、runShellCommand() 和 doctrine:fixtures:load 的示例。复现 cleanup 事务是否会使外部命令无法看到测试更改，然后确定文档是否应建议使用 cleanup: false，并在每次测试之前加载 fixture。

由索引模型根据 Issue 内容生成。