This differs from the method testing, in that it forces the aspect-oriented test classes.
It matches the *Test_write__data_types* above but there's no match for *Test_write*.
I suggest:
```
Within this test module there must be one or more test classes:
 - TestFunction or TestAspectOfFunction
```
Or, following AJ's observation:
```
Within this test module there must be one or more test classes:
 - Test_function or Test_function__aspect
```