test-coverage.yml

name: Test Coverage Check

on:
  pull_request:
    branches: [ main, master ]
  push:
    branches: [ main, master ]

env:
  CARGO_TERM_COLOR: always

jobs:
  test-coverage:
    name: Test Coverage
    runs-on: ubuntu-latest
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      
    - name: Install Rust
      uses: dtolnay/rust-toolchain@stable
      with:
        components: rustfmt, clippy
        
    - name: Cache cargo registry
      uses: actions/cache@v4
      with:
        path: |
          ~/.cargo/registry
          ~/.cargo/git
          target
        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
        restore-keys: |
          ${{ runner.os }}-cargo-
          
    - name: Install cargo-tarpaulin
      run: cargo install cargo-tarpaulin --version 0.27.0
      
    - name: Run tests with coverage
      run: cargo tarpaulin --workspace --all-targets --out Xml --output-dir target/coverage
      
    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v4
      with:
        file: target/coverage/cobertura.xml
        flags: unittests
        name: utility-drip-contracts
        fail_ci_if_error: false
        
    - name: Check coverage threshold
      run: |
        cargo tarpaulin --workspace --all-targets --out Json --output-dir target/coverage
        COVERAGE=$(cat target/coverage/tarpaulin.json | jq -r '.files | map(.coverage) | add / .files | length * 100')
        echo "Current coverage: $COVERAGE%"
        
        THRESHOLD=85
        if (( $(echo "$COVERAGE < $THRESHOLD" | bc -l) )); then
          echo "❌ Coverage $COVERAGE% is below threshold $THRESHOLD%"
          exit 1
        else
          echo "✅ Coverage $COVERAGE% meets threshold $THRESHOLD%"
        fi
        
    - name: Generate HTML coverage report
      run: cargo tarpaulin --workspace --all-targets --out Html --output-dir target/coverage
      
    - name: Upload coverage report
      uses: actions/upload-artifact@v4
      with:
        name: coverage-report
        path: target/coverage/tarpaulin.html
        retention-days: 30