Automatically run tests

.Rbuildignore

@@ -1,4 +1,5 @@
 ^.*\.Rproj$
 ^\.Rproj\.user$
 ^\.claude$
+^\.github$
 ^LICENSE\.md$

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

@@ -0,0 +1,38 @@
+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+name: R-CMD-check
+
+permissions: read-all
+
+jobs:
+  R-CMD-check:
+    runs-on: ubuntu-latest
+
+    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: release
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::rcmdcheck
+          needs: check
+
+      - uses: r-lib/actions/check-r-package@v2
+        with:
+          upload-snapshots: true
+          build_args: 'c("--no-manual","--compact-vignettes=gs+qpdf")'

DESCRIPTION

@@ -17,3 +17,6 @@ Imports:
     magick (>= 2.7.0),
     cli (>= 3.6.0),
     fs (>= 1.6.0)
+Suggests:
+    testthat (>= 3.0.0)
+Config/testthat/edition: 3