llvm-cov.yml

---
name: llvm-cov

# Controls when the action will run.
on:
  pull_request:

permissions: read-all

jobs:
  produce-coverage-info:
    outputs:
      uncovered_lines: ${{ steps.coverage.outputs.uncovered_lines }}
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v4
        with:
          lfs: true

      - name: Set-Up
        run: |
          # https://docs.microsoft.com/en-us/cli/azure/install-azure-cli-linux?pivots=apt#option-1-install-with-one-command
          curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash

      - name: Install protobuf
        uses: arduino/setup-protoc@v3
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Configure rustc version
        run: |
          RUSTC_VERSION=$(grep channel rust-toolchain.toml | tail -n1 | tr -d " " | cut -f2 -d'"')
          echo "RUSTC_VERSION=$RUSTC_VERSION" >> "$GITHUB_ENV"

      - name: Install Rust toolchain
        uses: gluwa/toolchain@dev
        with:
          toolchain: ${{ env.RUSTC_VERSION }}
          components: llvm-tools-preview
          target: wasm32-unknown-unknown
          profile: minimal
          override: true
      - uses: Swatinem/rust-cache@v2

      - name: Install cargo-llvm-cov
        uses: taiki-e/install-action@v2.44.15
        with:
          tool: cargo-llvm-cov

      - name: Run tests
        id: coverage
        run: |
          PR_NUMBER=$(echo "$GITHUB_REF" | sed "s|refs/pull/||" | sed "s|/merge||")
          DESTINATION_PATH="creditcoin3/PR-$PR_NUMBER"
          export DESTINATION_PATH
          echo "**For full LLVM coverage report [click here](https://staticsitellvmhtml.z13.web.core.windows.net/$DESTINATION_PATH/html/)!**" > uncovered-lines.log

          cargo llvm-cov --features=runtime-benchmarks \
              --workspace --html --show-missing-lines --hide-instantiations \
              --ignore-filename-regex "(tests.rs|mock.rs)"

          UNCOVERED_LINES=$(sed "s|$(pwd)|.|" uncovered-lines.log)
          # workaround the fact that GitHub Actions doesn't support multi-line output
          # https://trstringer.com/github-actions-multiline-strings/
          UNCOVERED_LINES="${UNCOVERED_LINES//'%'/'%25'}"
          UNCOVERED_LINES="${UNCOVERED_LINES//$'\n'/'%0A'}"
          UNCOVERED_LINES="${UNCOVERED_LINES//$'\r'/'%0D'}"
          echo "uncovered_lines=$UNCOVERED_LINES" >> "$GITHUB_OUTPUT"

      - name: Azure login
        if: env.GITHUB_TOKEN
        env:
          GITHUB_TOKEN: ${{ secrets.CREDITCOIN_GITHUB_API_TOKEN }}
        uses: azure/login@v2
        with:
          creds: ${{ secrets.AZURE_CREDENTIALS }}
          allow-no-subscriptions: true

      - name: Upload coverage report to Azure Storage
        if: env.GITHUB_TOKEN
        env:
          GITHUB_TOKEN: ${{ secrets.CREDITCOIN_GITHUB_API_TOKEN }}
        run: |
          AZURE_STORAGE_KEY=${{ secrets.LLVM_AZURE_STORAGE_KEY }}
          export AZURE_STORAGE_KEY
          PR_NUMBER=$(echo "$GITHUB_REF" | sed "s|refs/pull/||" | sed "s|/merge||")
          DESTINATION_PATH="creditcoin3/PR-$PR_NUMBER"
          export DESTINATION_PATH

          az storage blob upload-batch --account-name staticsitellvmhtml --auth-mode key -d "\$web" --destination-path "$DESTINATION_PATH" --overwrite -s ./target/llvm-cov

      - name: Upload coverage report as artifact
        uses: actions/upload-artifact@v4
        with:
          name: coverage-report
          path: target/llvm-cov/html/

  upload-coverage-info:
    needs:
      - produce-coverage-info
    runs-on: ubuntu-24.04
    permissions:
      pull-requests: write
    steps:
      - name: Post comment to PR
        if: env.GITHUB_TOKEN
        uses: mshick/add-pr-comment@v2
        env:
          GITHUB_TOKEN: ${{ secrets.CREDITCOIN_GITHUB_API_TOKEN }}
        with:
          message: ${{ needs.produce-coverage-info.outputs.uncovered_lines }}
          allow-repeats: false