Guosmilesmile commented on code in PR #15843:
URL: https://github.com/apache/iceberg/pull/15843#discussion_r3147687820


##########
spark/v3.4/build.gradle:
##########
@@ -49,6 +49,14 @@ 
project(":iceberg-spark:iceberg-spark-${sparkMajorVersion}_${scalaVersion}") {
     }
   }
 
+  configurations {
+    parquetTestArtifactsRuntime {
+      canBeConsumed = false
+      canBeResolved = true
+      transitive = false
+    }
+  }
+

Review Comment:
   When I add `testImplementation (project(path: ':iceberg-parquet', 
configuration: 'testFixturesRuntimeElements'))` in spark I meet a error.
   
   ```> Module 'org.apache.iceberg:iceberg-parquet' has been rejected:
              Cannot select module with conflict on capability 
'org.apache.iceberg:iceberg-parquet-test-fixtures:1.10.0-SNAPSHOT' also 
provided by ['project :iceberg-parquet' (testFixturesApiElements), 'project 
:iceberg-parquet' (testFixturesRuntimeElements)]
   ```
   
   Spark tests already compile against the main :iceberg-parquet artifact and 
its testFixtures, but some test code/resources from parquet are only needed at 
execution time. Keeping them in a separate runtime-only configuration avoids 
exposing parquet's internal test classes on the test compile classpath, and 
transitive = false makes sure we only pull in that test jar itself rather than 
an extra dependency graph.
   
   parquetTestArtifactsRuntime is an internal, resolvable-only configuration. 
canBeConsumed = false means it is not published for other projects to consume, 
canBeResolved = true allows this project to resolve it into files and append 
them to the test classpath, and transitive = false ensures we only pull the 
:iceberg-parquet testArtifacts jar itself rather than its full transitive 
dependency graph.



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