Configuration.copyRecursive() and test-fixtures I'm trying to create a recursive copy of

testRuntimeClasspath

, resolve it and iterate through the resolved artifacts. But if there are test fixtures, it fails with

> Could not resolve all artifacts for configuration ':app:testRuntimeClasspathCopy'.
   > Could not resolve project :app.
     Required by:
         project :app
      > Unable to find a variant with the requested capability: feature 'test-fixtures':
           - Variant 'testRuntimeClasspathCopy' provides 'playground:app:unspecified'

It looks like something is missing from the copy of the original configuration. Is this expected? Thanks! I have a little playground project to reproduce the issue here https://github.com/aloubyansky/playground/tree/gradle-copyRecursive-test-fixtures Commenting out https://github.com/aloubyansky/playground/blob/gradle-copyRecursive-test-fixtures/plugin/src/main/java/org/example/GreetingTask.java#L21 works. (I realize referencing a

Project

from a task is a bad practice, this is just a reproducer).

It's generally recommended to avoid `copy`/`copyRecursive` if possible, as they can have strange behavior and are usually not necessary, due to

extendsFrom

. Why do you need to use it here?

It's a bit complicated. I need to perform some analysis of the dependencies of the original configuration, based on which I may need to add component variants for some dependencies and possibly perform a few iterations of that. Perhaps i could do my own copying instead but i might run into the same issues?

It may have better behavior if you do and also copy the superconfigurations (

getExtendsFrom()

), as it won't be merging dependencies from all superconfigurations.

interesting, thanks, i'll try that

Removing the

copyRecursive()

and creating a new configuration with

configurations.resolvable

and

conf.setExtendsFrom(project.getConfigurations().getByName(JavaPlugin.TEST_RUNTIME_CLASSPATH_CONFIGURATION_NAME).getExtendsFrom());

results in what looks like expected behavior:

> Task :app:greeting
- app-test-fixtures.jar (project :app)
- app.jar (project :app)
- xom-1.3.9.jar (xom:xom:1.3.9)
- xercesImpl-2.12.2.jar (xerces:xercesImpl:2.12.2)
- xml-apis-1.4.01.jar (xml-apis:xml-apis:1.4.01)

However, you might need to also copy the attributes to get fully correct resolution.

why are you not using simply

conf.setExtendsFrom(project.getConfigurations().getByName(JavaPlugin.TEST_RUNTIME_CLASSPATH_CONFIGURATION_NAME))

?

I'm not confident that extending from a resolvable configuration is the right thing to do here, or even something that should be done in general, and as it can't have dependencies declared on it anyways it's not necessary.

just in case, i tried

baseConfig.getAllDependencies().forEach(dependency -> {
            config.getDependencies().add(dependency);
        });

but it resulted in the same error as

copyRecursive

, so it seems like

extendsFrom

is the way to go

Drawback of getting extends from and setting it is, that it is rather, so if the extends from changes later you do not see that, while you would get it if you extended the resolvable configuration directly.

yeah, in my actual project i think i have to just extend from the base configuration, instead of getting its

extendsFrom