filecopymethod-test.yml

# Some platform-specific file copy syscalls (e.g. creating reflinks) are only
# supported on some platforms, and only with specific filesystems. These
# syscalls are used by different FileCopyMethod implementations.
#
# This workflow sets up the conditions needed for those syscalls to work,
# and then runs the tests with the different FileCopyMethods.

name: FileCopyMethod

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main, develop ]
  workflow_dispatch:

jobs:
  test:
    name: Test
    runs-on: ${{ matrix.environment.runner }}
    strategy:
      matrix:
        environment:
         - runner: macos-latest
           filesystem: APFS
           copymethod: ReflinkCopy
         - runner: ubuntu-latest
           filesystem: btrfs
           copymethod: ReflinkCopy
    steps:
    - name: Set up Go
      uses: actions/setup-go@v4
      with:
        go-version: 'stable'
      id: go

    - name: Check out code into the Go module directory
      uses: actions/checkout@v3

    - name: Get dependencies
      run: go get -v -t -d ./...

    - name: Build
      run: go build -v .

    - # Sets TEST_PATH environment variable.
      # TEST_PATH will later be updated to the mountpoint of the filesystem mount point.
      name: Set up testing environment
      run: |-
        mkdir ./test/filesystems
        echo "TEST_PATH=." >> $GITHUB_ENV

    - name: Set up filesystem (MacOS)
      if: ${{ matrix.environment.filesystem != '' && startsWith(matrix.environment.runner, 'macos-') }}
      run: |-
        IMAGE_PATH="./test/filesystems/${{matrix.environment.filesystem}}.dmg"
        MOUNT_PATH="./test/filesystems/${{matrix.environment.filesystem}}.mount"
        echo "TEST_PATH=${MOUNT_PATH}" >> $GITHUB_ENV

        hdiutil create -size 500m -fs APFS "$IMAGE_PATH"
        hdiutil attach -mountpoint "$MOUNT_PATH" "$IMAGE_PATH"

    - name: Set up filesystem (Linux)
      if: ${{ matrix.environment.filesystem != '' && startsWith(matrix.environment.runner, 'ubuntu-') }}
      run: |-
        IMAGE_PATH="./test/filesystems/${{matrix.environment.filesystem}}.img"
        MOUNT_PATH="./test/filesystems/${{matrix.environment.filesystem}}.mount"
        echo "TEST_PATH=${MOUNT_PATH}" >> $GITHUB_ENV

        truncate -s 500m "$IMAGE_PATH"
        mkfs -t "${{matrix.environment.filesystem}}" "$IMAGE_PATH"
        mkdir "$MOUNT_PATH"
        whoami
        id -u
        sudo mount -o loop "$IMAGE_PATH" "$MOUNT_PATH"
        sudo chown -R "$(id -u):$(id -g)" "$MOUNT_PATH"

    - name: Copy files to mounted filesystem
      if: ${{ matrix.environment.filesystem != '' }}
      run: |-
        rsync -av --exclude=".*" --exclude "test/filesystems" . "$TEST_PATH"

    - name: Test
      working-directory: ${{ env.TEST_PATH }}
      env:
        TEST_FILESYSTEM: ${{ matrix.environment.filesystem }}
        TEST_FILECOPYMETHOD: ${{ matrix.os.copymethod }}
      run: go test -v