test: add book test for repo-link-rel and repo-link-target

Author: mcanouil

tests/docs/smoke-all/2025/12/10/13769/_quarto.yml

@@ -0,0 +1,20 @@
+project:
+  type: book
+
+book:
+  title: "issue13769"
+  author: "Norah Jones"
+  date: "12/10/2025"
+  repo-url: "https://github.com/quarto-dev/quarto-cli"
+  repo-link-target: "_blank"
+  repo-link-rel: "noreferrer"
+  repo-actions: none
+  chapters:
+    - index.qmd
+
+
+format:
+  html:
+    theme:
+      - cosmo
+      - brand

tests/docs/smoke-all/2025/12/10/13769/index.qmd

@@ -0,0 +1,15 @@
+---
+format: html
+_quarto:
+  tests:
+    html:
+      ensureHtmlElements:
+        - ['rel="noreferrer"']
+        - ['target="_blank"']
+---
+
+# Preface
+
+This is a Quarto book.
+
+To learn more about Quarto books visit <https://quarto.org/docs/books>.