@donnerbart/split-tests-java-action

Divides a test suite into groups with equal execution time, based on prior test timings.

This ensures optimal parallel execution. Since test file runtimes can vary significantly, splitting them evenly without considering timing may result in inefficient grouping.

Usage

name: Integration Testson:
pull_request:
branches: '**'workflow_dispatch:
concurrency:
group: integration-test-${{ github.ref }}cancel-in-progress: trueenv:
split-total: 10jobs:
generate-split-index-json:
name: Generate split indexesruns-on: ubuntu-latestoutputs:
json: ${{ steps.generate.outputs.split-index-json }}steps:
- name: Generate split index list id: generateuses: donnerbart/split-tests-java-action/generate-split-index-json@v1with:
split-total: ${{ env.split-total }}integration-test:
name: 'Split #${{ matrix.split-index }}'runs-on: ubuntu-latestneeds:
- generate-split-index-jsonstrategy:
fail-fast: falsematrix:
split-index: ${{ fromjson(needs.generate-split-index-json.outputs.json) }}steps:
- name: Checkout repositoryuses: actions/checkout@v4with:
path: project
- name: Checkout JUnit reportsuses: donnerbart/split-tests-java-action/checkout-junit-reports@v1with:
git-branch: junit-reports/${{ github.base_ref }}path: junit-reports
- name: Set up JDK 21uses: actions/setup-java@v4with:
distribution: temurinjava-version: 21
- name: Set up Gradleuses: gradle/actions/setup-gradle@v4
- name: Split testsid: split-testsuses: donnerbart/split-tests-java-action@v1with:
split-index: ${{ matrix.split-index }}split-total: ${{ env.split-total }}glob: '**/project/src/integrationTest/**/*IT.java'junit-glob: '**/junit-reports/*.xml'format: 'gradle'new-test-time: 'average'debug: true
- name: Run integration testsrun: ./gradlew :integrationTest ${{ steps.split-tests.outputs.test-suite }}
- name: Upload JUnit report artifactuses: actions/upload-artifact@v4with:
name: junit-xml-reports-${{ matrix.split-index }}path: '**/test-results/integrationTest/*.xml'merge-junit-reports:
name: Merge JUnit reportsruns-on: ubuntu-latestneeds:
- integration-testpermissions:
contents: writesteps:
- name: Merge JUnit reportsuses: donnerbart/split-tests-java-action/merge-junit-reports@v1with:
git-branch: junit-reports/${{ github.base_ref }}artifact-name: junit-xml-reportssplit-artifact-pattern: junit-xml-reports-*