coverage-badge 0.1.0

Generate shields.io-style SVG badges for test coverage percentages
Documentation
name: Coverage

on:
  push:
    branches: [main]

permissions:
  contents: write

jobs:
  coverage:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Install cargo-tarpaulin
        run: cargo install cargo-tarpaulin

      - name: Run tests with coverage
        run: cargo tarpaulin --out json --output-dir target/coverage

      - name: Extract coverage percentage
        id: coverage
        run: |
          COVERAGE=$(cat target/coverage/tarpaulin-report.json | jq '.coverage_percentage')
          echo "percentage=$COVERAGE" >> $GITHUB_OUTPUT
          echo "Coverage: $COVERAGE%"

      - name: Build coverage-badge
        run: cargo build --release

      - name: Generate badge
        run: ./target/release/coverage-badge -c ${{ steps.coverage.outputs.percentage }} -o assets/coverage.svg

      - name: Commit badge
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add assets/coverage.svg
          git diff --staged --quiet || git commit -m "Update coverage badge"
          git push