Merge pull request #147 from aaronpeikert/readonly

Add a test where the library is set to read only

.github/workflows/R-check-readonly.yaml

@@ -0,0 +1,53 @@
+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
+on:
+  push:
+    branches: [main, master]  # Trigger on pushes to main or master
+    paths:
+      - .github/workflows/R-check-readonly.yaml  # Also trigger if this workflow file changes
+  pull_request:
+    branches: [main, master]  # Trigger on pull requests targeting main or master
+  workflow_dispatch:  # Allow manual triggers
+
+
+name: R Testthat Readonly
+
+jobs:
+  R-CMD-check:
+    runs-on: ${{ matrix.config.os }}
+
+    name: ${{ matrix.config.os }} (${{ matrix.config.r }})
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - {os: ubuntu-latest,   r: 'release'}
+
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+      R_KEEP_PKG_SOURCE: yes
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: r-lib/actions/setup-pandoc@v2
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          r-version: ${{ matrix.config.r }}
+          http-user-agent: ${{ matrix.config.http-user-agent }}
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::rcmdcheck
+          needs: check
+
+      - name: Make user library read-only
+        run: |
+          Rscript -e 'Sys.chmod(.libPaths()[1], mode = "0555")'
+
+      - uses: r-lib/actions/check-r-package@v2
+        with:
+          upload-snapshots: false