.github/workflows/test-pr.yaml

name: "PR - Test Updated Templates"
on:
  pull_request:

jobs:
  detect-changes:
    runs-on: ubuntu-latest
    outputs:
      templates: ${{ steps.filter.outputs.changes }}
    steps:
      - uses: dorny/paths-filter@v2
        id: filter
        with:
          filters: |
            alpine: ./**/alpine/**
            anaconda: ./**/anaconda/**
            anaconda-postgres: ./**/anaconda-postgres/**
            cpp: ./**/cpp/**
            cpp-mariadb: ./**/cpp-mariadb/**
            debian: ./**/debian/**
            docker-outside-of-docker: ./**/docker-outside-of-docker/**
            docker-outside-of-docker-compose: ./**/docker-outside-of-docker-compose/**
            docker-in-docker: ./**/docker-in-docker/**
            dotnet: ./**/dotnet/**
            dotnet-fsharp: ./**/dotnet-fsharp/**
            dotnet-mssql: ./**/dotnet-mssql/**
            dotnet-postgres: ./**/dotnet-postgres/**
            go: ./**/go/**
            go-postgres: ./**/go-postgres/**
            java: ./**/java/**
            java-postgres: ./**/java-postgres/**
            javascript-node: ./**/javascript-node/**
            javascript-node-mongo: ./**/javascript-node-mongo/**
            javascript-node-postgres: ./**/javascript-node-postgres/**
            jekyll: ./**/jekyll/**
            kubernetes-helm-minikube: ./**/kubernetes-helm-minikube/**
            markdown: ./**/markdown/**
            miniconda: ./**/miniconda/**
            miniconda-postgres: ./**/miniconda-postgres/**
            php: ./**/php/**
            php-mariadb: ./**/php-mariadb/**
            postgres: ./**/postgres/**
            powershell: ./**/powershell/**
            python: ./**/python/**
            ruby: ./**/ruby/**
            ruby-rails-postgres: ./**/ruby-rails-postgres/**
            rust: ./**/rust/**
            rust-postgres: ./**/rust-postgres/**
            typescript-node: ./**/typescript-node/**
            ubuntu: ./**/ubuntu/**
            universal: ./**/universal/**

  test:
    needs: [detect-changes]
    runs-on: ubuntu-latest
    continue-on-error: true
    strategy:
      matrix:
        templates: ${{ fromJSON(needs.detect-changes.outputs.templates) }}
    steps:
      - uses: actions/checkout@v2

      - name: "Install latest devcontainer CLI"
        run: npm install -g @devcontainers/cli

      - name: "Generating tests for '${{ matrix.templates }}'"
        run: echo "${{ matrix.templates }}"

      - name: Configure template
        run: |
          set -e
          cd src/${{ matrix.templates }}

          # Configure templates only if `devcontainer-template.json` contains the `options` property.
          optionProp=( $(jq -r '.options' devcontainer-template.json) )

          if [ "${optionProp}" != "" ] && [ "${optionProp}" != "null" ] ; then  
            options=( $(jq -r '.options | keys[]' devcontainer-template.json) )

            if [ "${options[0]}" != "" ] && [ "${options[0]}" != "null" ] ; then
              echo "(!) Configuring template options within 'src/${{ matrix.templates }}' folder"
              for option in "${options[@]}"
              do
                option_key="\${templateOption:$option}"
                option_value=$(jq -r ".options | .${option} | .default" devcontainer-template.json)

                if [ "${option_value}" = "" ] || [ "${option_value}" = "null" ] ; then
                  echo "Template '${{ matrix.templates }}' is missing a default value for option '${option}'"
                  exit 1
                fi

                echo "(!) Replacing '${option_key}' with '${option_value}'"
                option_value_escaped=$(sed -e 's/[]\/$*.^[]/\\&/g' <<<"${option_value}")
                find ./ -type f -print0 | xargs -0 sed -i "s/${option_key}/${option_value_escaped}/g"
              done
            fi
          fi

      - name: Run Smoke Test
        run: |
          template_id="${{ matrix.templates }}"
          src_dir="test/${template_id}"

          if [ ! -d "$(pwd)/${src_dir}" ] ; then  
            echo "Template '${{ matrix.templates }}' is missing a test folder"
            exit 1
          fi

          dest_dir="src/${template_id}/test-project"
          mkdir -p ${dest_dir}
          shopt -s dotglob
          cp -Rp ${src_dir}/* ${dest_dir}
          cp test/test-utils/test-utils.sh ${dest_dir}

          echo "Building dev container"
          id_label="test-container=${template_id}"
          devcontainer up --id-label ${id_label} --workspace-folder "src/${template_id}/"

          # Fake out existence of extensions, VS Code Server to validate extensions
          echo "(*) Stubbing out extensions and VS Code Server..."

          # Configuring path for 'devcontainer.json' 
          dev_container_relative_path="src/${template_id}"
          dev_container_json_name=".devcontainer.json"

          if [ -d "$(pwd)/${dev_container_relative_path}/.devcontainer" ] ; then  
            dev_container_relative_path="${dev_container_relative_path}/.devcontainer"
            dev_container_json_name="devcontainer.json"
          fi

          mkdir -p "/tmp/${dev_container_relative_path}"
          cp -f "$(pwd)/${dev_container_relative_path}/${dev_container_json_name}" "/tmp/${dev_container_relative_path}/"
          dev_container_tmp="/tmp/${dev_container_relative_path}/${dev_container_json_name}"
          sed -i'.bak' -e "s/\\/\\/.*/ /g" "${dev_container_tmp}"

          # Fetching extensions list defined in 'devcontainer.json'
          extensions="$(jq '.extensions' --compact-output "${dev_container_tmp}" | tr -d '[' | tr -d ']' | tr ',' '\n' 2>/dev/null || echo -n '')"

          # Stubbing extensions list for the tests validation with checkExtension() 
          devcontainer exec --workspace-folder "src/${template_id}/" --id-label ${id_label} /bin/sh -c "\
              mkdir -p \$HOME/.vscode-server/bin \$HOME/.vscode-server/extensions \
              && cd \$HOME/.vscode-server/extensions \
              && if [ \"${extensions}\" != '' ]; then echo \"${extensions}\" | xargs -n 1 mkdir -p; fi \
              && find \$HOME/.vscode-server/ -type d"

          echo "Running Smoke Test"
          devcontainer exec --workspace-folder "src/${template_id}/" --id-label ${id_label} /bin/sh -c 'set -e && if [ -f "test-project/test.sh" ]; then cd test-project && if [ "$(id -u)" = "0" ]; then chmod +x test.sh; else sudo chmod +x test.sh; fi && ./test.sh; else ls -a; fi'

          # Clean up
          docker rm -f $(docker container ls -f "label=${id_label}" -q)