post-test-results.yml

name: Post test results

on:
  workflow_run:
    workflows: [Automatic Tests]
    types:
      - completed

jobs:
  report-coverage:
    runs-on: ubuntu-latest
    if: github.event.workflow_run.event == 'pull_request'
    steps:
      - name: 'Wait for artifact to upload'
        run: sleep 30
      - name: 'Download artifact'
        uses: actions/github-script@v6
        with:
          script: |
            let allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
               owner: context.repo.owner,
               repo: context.repo.repo,
               run_id: context.payload.workflow_run.id,
            });
            let matchArtifact = allArtifacts.data.artifacts.find((artifact) => {
              return artifact.name == "coverage-report"
            });
            if (!matchArtifact) {
              console.error('no report artifact found');
              console.info('artifacts: %o', allArtifacts.data.artifacts);
              throw new Error('no report');
            }
            let download = await github.rest.actions.downloadArtifact({
               owner: context.repo.owner,
               repo: context.repo.repo,
               artifact_id: matchArtifact.id,
               archive_format: 'zip',
            });
            let fs = require('fs');
            fs.writeFileSync(`${process.env.GITHUB_WORKSPACE}/coverage-report.zip`, Buffer.from(download.data));

      - name: 'Unzip artifact'
        run: unzip coverage-report.zip

      - name: 'Comment on PR'
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            let fs = require('fs');
            let issue_number = Number.parseInt(fs.readFileSync('./pr-number'));
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: issue_number,
              body: await fs.readFileSync('./report.md')
            });