name: Testing

on: [pull_request]
jobs:
  test:
    timeout-minutes: 360
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        # all versions to only build or test for non windows os's
        # inclusions will modify the major ones to mark them as testables
        os: [macOS-latest, ubuntu-latest]
        ghc: ['8.10.2', '8.10.1', '8.8.4', '8.8.3', '8.8.2', '8.6.5', '8.6.4']
        ghc-lib: [false]
        include:
          # one ghc-lib build
          - os: ubuntu-latest
            ghc: '8.10.1'
            ghc-lib: true
          # only test supported ghc major versions
          - os: macOS-latest
            ghc: '8.10.2'
            test: true
          - os: ubuntu-latest
            ghc: '8.10.2'
            test: true
          # specific 8.10.2 version for windows and chocolatey
          - os: windows-latest
            ghc: '8.10.2.2'
            test: true
          - os: macOS-latest
            ghc: '8.8.4'
            test: true
          - os: ubuntu-latest
            ghc: '8.8.4'
            test: true
          - os: macOS-latest
            ghc: '8.6.5'
            test: true
          - os: ubuntu-latest
            ghc: '8.6.5'
            test: true
          - os: windows-latest
            ghc: '8.6.5'
            test: true
          # only build rest of supported ghc versions for windows
          - os: windows-latest
            ghc: '8.10.1'
          - os: windows-latest
            ghc: '8.6.4'

    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-haskell@v1
      with:
        ghc-version: ${{ matrix.ghc }}
        cabal-version: '3.2'

    - run: ./fmt.sh
      name: "HLint via ./fmt.sh"

    - name: Cache Cabal
      uses: actions/cache@v2
      with:
        path: |
          ~/.cabal/packages
          ~/.cabal/store
        key: ${{ runner.os }}-${{ matrix.ghc }}-{{matrix.ghc-lib}}-cabal-test

    - run: cabal update

    - name: cabal.project.local
      run: |
        echo "tests: True" > cabal.project.local
        echo "package ghcide" >> cabal.project.local
        echo "  ghc-options: -Werror" >> cabal.project.local

    - name: ghc-lib
      if: ${{ matrix.ghc-lib }}
      run: |
        echo "  flags: ghc-lib" >> cabal.project.local
        echo "package hie-compat" >> cabal.project.local
        echo "  flags: ghc-lib" >> cabal.project.local

    - name: Build
      shell: bash
      # Retry it three times to workaround compiler segfaults in windows
      run: cabal build || cabal build || cabal build

    - name: Test
      if: ${{ !matrix.ghc-lib && matrix.test }}
      shell: bash
      # run the tests without parallelism to avoid running out of memory
      run: cabal test --test-options="-j1 --rerun-update" || cabal test --test-options="-j1 --rerun" || LSP_TEST_LOG_COLOR=0 LSP_TEST_LOG_MESSAGES=true LSP_TEST_LOG_STDERR=true cabal test --test-options="-j1 --rerun"