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Do you own that iceberg-data project?

Do you own that iceberg-data project?

Nope.

That's the poormans solution, yes. 🙂 As they publish Gradle Module Metadata, the proper solution is to ask them to publish a variant for the tests, so that you can depend on that feature vairant using for example

testImplementation("org.apache.iceberg:iceberg-data:0.13.0") {
    capabilities {
        requireCapability("org.apache.iceberg:iceberg-data-tests")
    }
}

The idiomatic work-around is to use a component metadata rule to add that variant ad-hoc like

dependencies {
    components {
        withModule("org.apache.iceberg:iceberg-data") {
            addVariant("tests") {
                withCapabilities {
                    removeCapability(id.group, id.name)
                    addCapability(id.group, "${id.name}-tests", id.version)
                }
                withFiles {
                    addFile("${id.name}-${id.version}-tests.jar")
                }
            }
        }
    }
    testImplementation("org.apache.iceberg:iceberg-data:0.13.0") {
        capabilities {
            requireCapability("org.apache.iceberg:iceberg-data-tests")
        }
    }
}

Or with the component metadata rule in your settings script, or even with the logic in its own class.

actually if they used the standard Gradle test fixtures plugin, all you'd have to do is:

testImplementation(testFixtures("org.apache.iceberg:iceberg-data:0.13.0"))

I looked into the module file before I wrote and there is no variant for that jar. That's why I said that the proper fix is for them to publish a variant for it. 😉

I was answering about your dependency notation. If you use the standard test-fixtures variant, all you have to do is use the

testFixtures

notation, not the longer capabilities one

You mean if my added capability would be the one the test fixtures plugin used and / or if the iceberg project used the test testFixtures plugin to publish the variant and not create a new variant, yeah, that's true of course. So my code snippets then were

testImplementation(testFixtures("org.apache.iceberg:iceberg-data:0.13.0"))

and

dependencies {
    components {
        withModule("org.apache.iceberg:iceberg-data") {
            addVariant("testFixtures") {
                withCapabilities {
                    removeCapability(id.group, id.name)
                    addCapability(id.group, "${id.name}-test-fixtures", id.version)
                }
                withFiles {
                    addFile("${id.name}-${id.version}-tests.jar")
                }
            }
        }
    }
    testImplementation(testFixtures("org.apache.iceberg:iceberg-data:0.13.0"))
}

yes