micrometer-observation-test brings unnecessary JUnit dependencies, leading to conflicts #6012
Description
Courtesy of @wilkinsona
The micrometer-observation-test has a too broad (api) dependency on JUnit:
This leads to a number of unnecessary dependencies brought to consumers
+--- io.micrometer:micrometer-observation-test -> 1.15.0-SNAPSHOT
| +--- io.micrometer:micrometer-observation:1.15.0-SNAPSHOT (*)
| +--- org.assertj:assertj-core:3.27.3 -> 3.25.3
| | \--- net.bytebuddy:byte-buddy:1.14.11
| +--- org.junit.jupiter:junit-jupiter:5.12.0
| | +--- org.junit:junit-bom:5.12.0 -> 5.11.0 (*)
| | +--- org.junit.jupiter:junit-jupiter-api:5.12.0
| | | +--- org.junit:junit-bom:5.12.0 -> 5.11.0 (*)
| | | +--- org.opentest4j:opentest4j:1.3.0
| | | \--- org.junit.platform:junit-platform-commons:1.12.0
| | | \--- org.junit:junit-bom:5.12.0 -> 5.11.0 (*)
| | +--- org.junit.jupiter:junit-jupiter-params:5.12.0
| | | +--- org.junit:junit-bom:5.12.0 -> 5.11.0 (*)
| | | \--- org.junit.jupiter:junit-jupiter-api:5.12.0 (*)
| | \--- org.junit.jupiter:junit-jupiter-engine:5.12.0
| | +--- org.junit:junit-bom:5.12.0 -> 5.11.0 (*)
| | +--- org.junit.platform:junit-platform-engine:1.12.0
| | | +--- org.junit:junit-bom:5.12.0 -> 5.11.0 (*)
| | | +--- org.opentest4j:opentest4j:1.3.0
| | | \--- org.junit.platform:junit-platform-commons:1.12.0 (*)
| | \--- org.junit.jupiter:junit-jupiter-api:5.12.0 (*)
I've added the dependency on a project that uses JUnit 5.11.0. As soon as this module is added in test scope, my tests aren't running anymore. The gradle test runner is failing with
OutputDirectoryProvider not available; probably due to unaligned versions of the junit-platform-engine and junit-platform-launcher jars
This can be reproduced on the Spring-WS project in a feature branch.
The following fixes the issue on that particular project:
testImplementation("io.micrometer:micrometer-observation-test") {
exclude(group: "org.junit.jupiter")
}