Including gradle testFixtures also includes implementation code in tests since 3.22

[ls-bit]

Describe the bug

Since 3.22 when including test fixtures from a library with testImplementation(testFixtures(project(":some-library"))), also regular code from the library is included in the tests besides the test fixtures.

This leads to suprising behaviour such as @Startup methods from the library being executed in tests, but not in dev mode.

Expected behavior

Including test fixtures with testImplementation(testFixtures(project(":some-library"))) only includes test fixtures of the library

Actual behavior

Including test fixtures with testImplementation(testFixtures(project(":some-library"))) includes test fixtures and regular code of the library

How to Reproduce?

https://github.com/ls-bit/quarkus-issue-48048

1. Running ./gradlew module-app:test fails

Output of uname -a or ver

Microsoft Windows [Version 10.0.26100.3775]

Output of java -version

openjdk version "21.0.2" 2024-01-16 OpenJDK Runtime Environment GraalVM CE 21.0.2+13.1 (build 21.0.2+13-jvmci-23.1-b30) OpenJDK 64-Bit Server VM GraalVM CE 21.0.2+13.1 (build 21.0.2+13-jvmci-23.1-b30, mixed mode, sharing)

Quarkus version or git rev

3.22.3

Build tool (ie. output of mvnw --version or gradlew --version)

Gradle 8.13

Additional information

Probably related to https://quarkus.io/blog/test-classloading-rewrite/

[quarkus-bot]

/cc @glefloch, @quarkusio/devtools