How to move several tests into a common library for different Test?

Question

Yii

Greetings!
There are several interfaces that share common behavior. Each of them is tested by a separate Test class.
How to move testing of common functionality into a separate library?

Answer 1

And I thought that it would be more logical to test the general behavior of different interfaces in a separate test, with the transfer of addresses to data_provider.
But, there is another solution. Since the application was old and without a unit, the codeception was configured for xs which version. I cloned the current advanced-app nearby, synchronized the settings - it took off :-)
ItemTest <- AbstractTest <- \Codeception\Test\Unit