name: Run LLVM tests
on:
  workflow_dispatch:
    inputs:
      commit:
        description: 'Commit to extract from'
        type: string
      branch:
        description: 'Branch to extract from'
        type: string
      pipeline_type:
        description: 'Pipeline type'
        required: true
        default: 'push'
        type: choice
        options:
        - push
        - schedule

jobs:
  prepare:
    runs-on: ubuntu-latest
    outputs:
      LLVM_VERSION: ${{steps.get-parameters.outputs.LLVM_VERSION}}
    steps:
      - name: Download build parameters
        uses: dawidd6/action-download-artifact@v2
        with:
          workflow: build.yml
          workflow_conclusion: success
          commit: ${{inputs.commit}}
          branch: ${{inputs.branch}}
          event: ${{inputs.pipeline_type}}
          name: parameters
      - name: Get build parameters
        id: get-parameters
        run: |
          cat parameters.txt >> $GITHUB_OUTPUT
          cat $GITHUB_OUTPUT

  test-llvm:
    needs: [prepare]
    runs-on: windows-latest
    steps:
      - name: Download toolchain
        uses: dawidd6/action-download-artifact@v2
        with:
          workflow: build.yml
          workflow_conclusion: success
          commit: ${{inputs.commit}}
          branch: ${{inputs.branch}}
          event: ${{inputs.pipeline_type}}
          name: windows-ucrt-x86_64-toolchain
      - name: Unpack toolchain
        run: |
          Expand-Archive llvm-mingw-*.zip -DestinationPath .
          del llvm-mingw-*.zip
          mv llvm-mingw-* c:\llvm-mingw
          echo "c:\llvm-mingw\bin" | Out-File -FilePath $Env:GITHUB_PATH -Encoding utf8 -Append
          echo "c:\llvm-mingw\python\bin" | Out-File -FilePath $Env:GITHUB_PATH -Encoding utf8 -Append
          echo "PYTHON_EXE=c:/llvm-mingw/python/bin/python3.exe" | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf8 -Append
      - uses: actions/checkout@v3
      - name: Checkout llvm-project
        env:
          LLVM_VERSION: ${{needs.prepare.outputs.LLVM_VERSION}}
        run: |
          git config --global core.autocrlf false
          bash -c "CHECKOUT_ONLY=1 ./build-llvm.sh"
      # Not passing -DPython3_EXECUTABLE="$Env:PYTHON_EXE" here. The bundled Python doesn't normally have
      # zlib enabled, which some tests require.
      - name: Build the project and unittests
        run: |
          cd llvm-project
          mkdir build
          cd build
          cmake ../llvm `
            -G Ninja `
            -DCMAKE_BUILD_TYPE=Release `
            -DLLVM_TARGETS_TO_BUILD=X86 `
            -DLLVM_ENABLE_PROJECTS="clang;lld;clang-tools-extra" `
            -DLLVM_WINDOWS_PREFER_FORWARD_SLASH=OFF `
            -DCMAKE_C_COMPILER=clang `
            -DCMAKE_CXX_COMPILER=clang++ `
            -DLLVM_LIT_ARGS="-v --time-tests"
          ninja test-depends
      - name: Run tests
        run: |
          cd llvm-project
          cd build
          ninja check