name: Julia Test
on: [push]

jobs:
  julia-test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Set up Julia
        uses: julia-actions/setup-julia@v1
        with:
          version: '1.10'

      - name: Install dependencies (if Project.toml exists)
        shell: bash
        run: |
          if [ -f Project.toml ]; then
            julia -e 'using Pkg; Pkg.instantiate()'
          else
            echo "No Project.toml found; will create a minimal project for testing."
          fi

      - name: Run tests or Hello
        shell: bash
        run: |
          set -euo pipefail
          if [ -f Project.toml ]; then
            julia -e 'using Pkg; Pkg.activate("."); Pkg.test()'
          else
            mkdir -p test
            printf '%s\n' \
              'name = "HelloCI"' \
              'uuid = "f0f9c0b0-0000-4e00-9000-000000000001"' \
              'version = "0.1.0"' '' '[deps]' \
              'Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"' > Project.toml
            printf '%s\n' \
              'using Test' \
              '@test 2 + 2 == 4' \
              'println("Hello, Julia!")' > test/runtests.jl
            julia -e 'using Pkg; Pkg.activate("."); Pkg.test()'
          fi