Performance: archunit-junit5 may scan complete JDK for `@ArchTest` about archunit HOT 4 OPEN

Thanks for reporting this! I'm gonna take a look...

from archunit.

Just out of curiosity, what's the use of a module without any src folder? 🤔

from archunit.

I think the reason ArchUnit scans so much is because it has some pretty aggressive scanning to find classes in some corner cases (e.g. JAR files with missing entries). AFAIS JUnit Platform ReflectionSupport just uses classLoader.getResources("") which doesn't return any JDK URLs...
I think in general it's fair to include JDK classes if you just say importPackage(""), but in the case where we use ArchUnit to discover test classes this is not optimal of course 😬 I need to see what the best solution there is, maybe just ignoring the JDK itself is good enough for now (I'm not sure if ClassLoader.getResources(..) actually has any other difference for standard cases 🤷)

from archunit.

Just out of curiosity, what's the use of a module without any src folder? 🤔

I have a test suite consisting of several JUnit tests and ArchUnit tests as my main artifact. To test these tests, I have several modules with different classpaths (mostly different versions of the same libraries) and check if the tests can be executed successfully with these classpaths.

from archunit.