build_and_test.yml

name: Build and Test
permissions: read-all
on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main
concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
  cancel-in-progress: true
jobs:
  check-cache:
    runs-on:
      labels: ubuntu-20.04-8core
    outputs:
      runner: ${{ steps.runner.outputs.runner }}
    steps:
      - name: Check out repository code
        uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # pin@v3

      - name: Cache bazel build artifacts
        id: cache
        uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8 # pin@v3.3.1
        with:
          path: |
            ~/.cache/bazel
          key: ${{ runner.os }}-bazel-${{ hashFiles('.bazelversion', '.bazelrc', 'WORKSPACE') }}-${{ hashFiles('bazel/import_llvm.bzl') }}
          restore-keys: |
            ${{ runner.os }}-bazel-${{ hashFiles('.bazelversion', '.bazelrc', 'WORKSPACE') }}-
          lookup-only: true
      - name: Select runner
        id: runner
        env:
          CACHE_HIT: ${{ steps.cache.outputs.cache-hit  == 'true' }}
        run: |
          set -euo pipefail

          if [[ "${CACHE_HIT}" == "true" ]]; then
            echo "runner=ubuntu-20.04-8core" >> "$GITHUB_OUTPUT"
          else
            echo "runner=ubuntu-20.04-16core" >> "$GITHUB_OUTPUT"
          fi

  build-and-test:
    needs: check-cache
    runs-on:
      labels: ${{ needs.check-cache.outputs.runner }}
    steps:
      - name: Check out repository code
        uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # pin@v3

      - name: Cache bazel build artifacts
        uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8 # pin@v3.3.1
        with:
          path: |
            ~/.cache/bazel
          key: ${{ runner.os }}-bazel-${{ hashFiles('.bazelversion', '.bazelrc', 'WORKSPACE') }}-${{ hashFiles('bazel/import_llvm.bzl') }}
          restore-keys: |
            ${{ runner.os }}-bazel-${{ hashFiles('.bazelversion', '.bazelrc', 'WORKSPACE') }}-

      - name: "Run `bazel build`"
        run: |
          bazel build -c fastbuild //...

      - name: "Run `bazel test`"
        run: |
          bazel test -c fastbuild //...

      # Tests specifically for the tfhe-rs codegen
      - name: rustup toolchain install
        uses: dtolnay/rust-toolchain@439cf607258077187679211f12aa6f19af4a0af7 # pin@1.72.1
        with:
          toolchain: stable

      - name: Test rust codegen targets
        run: |
          bash .github/workflows/run_rust_tests.sh