Standardizes Maven test execution by automating artifacts cleanup and module verification.

Install

mkdir -p .claude/skills/mvnf-eclipse-rdf4j && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/17530" && unzip -o skill.zip -d .claude/skills/mvnf-eclipse-rdf4j && rm skill.zip

Installs to .claude/skills/mvnf-eclipse-rdf4j

Activation

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Run Maven tests in this repo with a consistent workflow (module test-artifact cleanup, root -Pquick install to refresh .m2_repo, then module verify or a single test class/method). Use when asked to run tests/verify in the rdf4j multi-module build or when the user says mvnf.
274 chars✓ has a “when” triggerlonger than Claude Code's old 250-char listing cap (fine on current versions)
Intermediate

Key capabilities

  • Run a module's full Maven test suite
  • Execute a specific unit test class or method
  • Run an integration test (Failsafe)
  • Delete stale test artifacts before running tests
  • Perform a root Maven install to refresh the local repository
  • Report test failures with pointers to report files

How it works

This skill executes Maven tests in a multi-module repository by first cleaning stale artifacts, performing a root install, and then running module-specific tests. It provides options for unit and integration tests.

Inputs & outputs

You give it
python3 .codex/skills/mvnf/scripts/mvnf.py core/sail/shacl
You get back
Results of the full test suite for the 'core/sail/shacl' module, with failure pointers if any

When to use mvnf

  • Run module tests
  • Verify test classes
  • Clean Maven artifacts
  • Run integration tests

About this skill

mvnf

Run Maven tests with repeatable commands and useful failure pointers.

Quick start

  • Run a module's full test suite:
    • python3 .codex/skills/mvnf/scripts/mvnf.py core/sail/shacl
  • Run a unit test class or method (module auto-detected):
    • python3 .codex/skills/mvnf/scripts/mvnf.py ShaclSailTest
    • python3 .codex/skills/mvnf/scripts/mvnf.py ShaclSailTest#testSomething
  • Run an integration test (Failsafe):
    • python3 .codex/skills/mvnf/scripts/mvnf.py --it ShaclSailIT#testSomething

What it does

  1. Deletes stale target/surefire* and target/failsafe* artifacts for the selected module.
  2. mvn -B -ntp -Dmaven.compiler.showWarnings=false -T 1C -o -Dmaven.repo.local=.m2_repo -Pquick install
  3. mvn -o -Dmaven.repo.local=.m2_repo -pl <module> verify (optionally with -DskipITs -Dtest=... for unit tests or -PskipUnitTests -Dit.test=... for Failsafe ITs)

Root install output is stored in maven-build.log. On success, mvnf prints one root-install summary line with BUILD SUCCESS and the log path. Verify logs use logs/mvnf/*-verify.log when retained or when tests fail. By default, successful Maven phases do not print their output tail; mvnf prints compact Surefire/Failsafe report totals and report paths instead. Failed phases still print the retained Maven tail plus compact report failure details.

For manual root clean installs, keep full output in maven-build.log and print only errors plus the reactor summary:

mvn -B -ntp \
  -Dmaven.compiler.showWarnings=false \
  -T 1C -o -Dmaven.repo.local=.m2_repo -Pquick clean install 2>&1 \
  | tee maven-build.log \
  | awk '
     /\[WARNING\]/ { next }
      /\[ERROR\]/ { print; next }

      /Reactor Summary/ { summary=1 }
      summary { print }
    '

For install without clean, replace clean install with install. For a module install, add -pl <module> -am before -Pquick. Keep the 2>&1 | tee maven-build.log | awk ... tail on every install variant.

If the test run fails, it prints the list of Surefire/Failsafe report files under the module's target/*-reports/ directories. For a handoff-ready block from retained reports, run python3 scripts/agent-evidence.py <module>/target/surefire-reports <module>/target/failsafe-reports.

Options

  • --module <path>: Force the module when the test class name exists in multiple modules.
  • --it: Treat the selector as an integration test and pass it via -Dit.test=....
  • --no-offline: Run Maven commands without -o (useful if offline resolution fails).
  • --stream: Stream verify output live for hang/no-progress debugging; install output is filtered to errors plus the reactor summary while the full install log is kept in maven-build.log.
  • --tail-on-success: Print Maven output tails on successful phases too (old verbose behavior).
  • --retain-logs: Keep verify logs on success.
  • -- <maven args>: Append extra Maven flags/profiles to the verify command while preserving selector behavior.

LMDB regression speedup note

For LMDB theme regression/snapshot tests, enable persistent prepared stores to skip repeated dataset rebuilds:

  • -Drdf4j.lmdb.themeRegression.persistentStore.enabled=true
  • Optional root override: -Drdf4j.lmdb.themeRegression.persistentStore.root=persistent-lmdb-theme-store

Pass extra Maven flags after --, for example:

  • python3 .codex/skills/mvnf/scripts/mvnf.py LmdbThemeQueryRegressionTest#socialMediaFiveCycleInterleavesValuesWithFollowsEdges --module core/sail/lmdb -- -Drdf4j.lmdb.themeRegression.persistentStore.enabled=true

When not to use it

  • When running Maven tests in a project that is not a multi-module build
  • When a custom Maven workflow is explicitly required

Limitations

  • Designed for multi-module Maven builds
  • Specific to running tests and verification tasks
  • Output filtering is applied to Maven logs

How it compares

This skill provides a consistent and repeatable workflow for running Maven tests, including artifact cleanup and repository refresh, which is more reliable than ad-hoc Maven commands.

Compared to similar skills

mvnf side by side with the closest alternatives in the catalog.

SkillInstallsUpdatedSafetyDifficulty
mvnf (this skill)01moReviewIntermediate
springboot-verification44moReviewIntermediate
semoss-testing-ci01moNo flagsIntermediate
ci-loop03moReviewIntermediate

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