test-coverage.yml

# .github/workflows/test-coverage.yml
name: Update Test Coverage

on:
  push:
    branches:
      - master
  pull_request:

jobs:
  test:
    runs-on: macOS-15
    permissions:
      contents: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Use latest available Xcode version
        run: sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

      - name: Resolve Swift Package Dependencies
        run: xcodebuild -resolvePackageDependencies

      - name: Build Tests
        run: |
          xcodebuild build \
            -project Weather.xcodeproj \
            -scheme Weather \
            -destination 'platform=iOS Simulator,name=iPhone 16' \
            | tee xcodebuild.log

      - name: Run tests with coverage
        run: |
          xcodebuild test \
            -project Weather.xcodeproj \
            -scheme Weather \
            -destination 'platform=iOS Simulator,name=iPhone 16' \
            -enableCodeCoverage YES \
            -resultBundlePath TestResults.xcresult | tee xcodebuild.log
        continue-on-error: true

      - name: Debug test failure (if any)
        if: failure()
        run: |
          tail -n 100 xcodebuild.log

      - name: Verify coverage data
        run: |
          if ! [ -d "TestResults.xcresult" ]; then
            echo "❌ Test results not found. Check test logs."
            exit 1
          fi
          if ! xcrun xccov view --report TestResults.xcresult > /dev/null 2>&1; then
            echo "❌ No coverage data found. Ensure tests are generating coverage."
            exit 1
          fi

      - name: Extract coverage data
        run: |
          xcrun xccov view --report --json TestResults.xcresult > coverage.json

      - name: Update README with Test Coverage
        run: |
          # Function to generate dynamic badge
          generate_badge() {
            local coverage=$1
            local color
            local text
            if (( $(echo "$coverage < 25" | bc -l) )); then
              color="red"
              text="Needs%20Attention"
            elif (( $(echo "$coverage >= 25 && $coverage < 80" | bc -l) )); then
              color="yellow"
              text="Good%20Job"
            else
              color="green"
              text="Excellent"
            fi
            echo "https://img.shields.io/badge/Coverage-${coverage}%25-${color}?style=flat&logo=swift&logoColor=white&label=${text}"
          }

          # Generate coverage section content
          echo "## Test Coverage" > coverage_section.md
          echo "" >> coverage_section.md
          echo "### 📊 General Coverage" >> coverage_section.md
          TOTAL_COVERAGE=$(jq -r '.coveredLines / .executableLines * 100 | round / 1' coverage.json)
          COVERAGE_BADGE_URL=$(generate_badge $TOTAL_COVERAGE)
          echo "![Test Coverage]($COVERAGE_BADGE_URL)" >> coverage_section.md
          echo "" >> coverage_section.md
          echo "---" >> coverage_section.md
          echo "### 📄 File-wise Coverage Breakdown" >> coverage_section.md
          echo "| File | Covered Lines | Executable Lines | Coverage |" >> coverage_section.md
          echo "|------|--------------|-----------------|----------|" >> coverage_section.md

          # Generate file-wise coverage rows with dynamic badges
          jq -r '.targets[].files[] | "\(.name) \(.coveredLines) \(.executableLines) \(.lineCoverage * 100 | round)"' coverage.json | while read -r name coveredLines executableLines coverage; do
            BADGE_URL=$(generate_badge $coverage)
            echo "| $name | $coveredLines | $executableLines | ![Coverage]($BADGE_URL) |" >> coverage_section.md
          done

          echo "---" >> coverage_section.md
          echo "" >> coverage_section.md

          # Remove ONLY the "Test Coverage" section and its subsections from README
          awk '
          /^## Test Coverage$/ { skip = 1 }
          /^## / && !/^## Test Coverage$/ { skip = 0 }
          !skip { print }
          ' README.md > README.tmp

          # Add the new "Test Coverage" section content from coverage_section.md
          cat coverage_section.md >> README.tmp

          # Move the updated file back to README.md
          mv README.tmp README.md

          # Clean up temporary file
          rm coverage_section.md

      - name: Commit and push coverage report
        env:
          GH_PAT: ${{ secrets.GH_PAT }}
        run: |
          git config --global user.name "mrugama"
          git config --global user.email "mrugama@gmail.com"
          git remote set-url origin https://mrugama:${GH_PAT}@github.com/mrugama/Weather.git
          git add coverage.json
          git add README.md
          git commit -m "Update test coverage report" || exit 0
          git push origin HEAD:master