Test-jar type dependencies fail to be resolved during checksum calculation with -f builds

[benoitbr]

Affected version

1.2.2, 1.2.1

Bug description

Building a sub-module with mvn -f <submodule> fails when that module depends on a test-jar artifact from another module. The build cache extension's checksum calculation cannot resolve the test-jar dependency, even though the artifact is correctly installed in the local Maven repository.

Full reactor builds are not affected.

Error

[ERROR] Failed to calculate checksums for module-b:
  org.eclipse.aether.resolution.ArtifactResolutionException:
  The following artifacts could not be resolved:
  com.example:module-a:test-jar:1.0.0-SNAPSHOT (absent):
  Could not find artifact com.example:module-a:test-jar:1.0.0-SNAPSHOT

Steps to reproduce

Minimal reproducer project: cache-testjar-reproducer.zip

# 1. Full reactor build — succeeds
mvn clean install

# 2. Build only module-b with -f — FAILS
mvn -f module-b clean install

# 3. Disabling the cache proves the extension is the culprit
mvn -f module-b clean install -Dmaven.build.cache.enabled=false  # succeeds

Environment

• Maven: 3.9.14

Related issues

• Regression for calculating checksum for tests jars with SNAPSHOT version from custom repos #422 — closed as duplicate of 1.2.1 is error: Failed to calculate checksums for xx Could not find artifact xx:jar:1.0-SNAPSHOT in nexus (http://xxx/nexus/content/groups/public/), but 1.2.0 is ok #417, but the fix in PR Fixes for regression after pr #379 #419 only addressed system-scoped and dynamic-version cases
• [#377](https://github.com/maximiln/maven-build-cache-extension/issues… #379 — PR that introduced the regression in snapshot artifact resolution

[benoitbr]

My AI agent believes the issue could be here:

maven-build-cache-extension/src/main/java/org/apache/maven/buildcache/checksum/MavenProjectInput.java

Line 845 in b827d52

new DefaultArtifactType(dependency.getType()));

If the type of the dependency is test-jar, the single-arg constructor of DefaultArtifactType will set the extension to test-jar instead of jar.

[cstamas]

And agent is right, that there is wrong.

[olamy]

@benoitbr thanks should be fixed with #468

[benoitbr]

Thanks