test: add check for validating go-redirects

Test ensures that:

- Go redirects are unique (this is actually enforced by YAML already
  because it requires keys to be unique, but just in case someone
  'echo >>'es into the file or whatever
- Go redirects always resolve to an index.html in the public output dir

Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>

.github/workflows/build.yml

@@ -53,6 +53,7 @@ jobs:
           - lint
           - test
           - unused-media
+          - test-go-redirects
     steps:
       -
         name: Checkout

Dockerfile

@@ -95,3 +95,12 @@ COPY --from=pagefind /pagefind .
 FROM scratch AS release
 COPY --from=build /out /
 COPY --from=pagefind /pagefind /pagefind
+
+FROM alpine:${ALPINE_VERSION} AS test-go-redirects
+WORKDIR /work
+RUN apk add yq
+COPY --from=build /out ./public
+RUN --mount=type=bind,target=. <<"EOT"
+set -ex
+./scripts/test_go_redirects.sh
+EOT

docker-bake.hcl

@@ -33,7 +33,7 @@ target "release" {
 }
 
 group "validate" {
-  targets = ["lint", "test", "unused-media"]
+  targets = ["lint", "test", "unused-media", "test-go-redirects"]
 }
 
 target "test" {
@@ -51,6 +51,11 @@ target "unused-media" {
   output = ["type=cacheonly"]
 }
 
+target "test-go-redirects" {
+  target = "test-go-redirects"
+  output = ["type=cacheonly"]
+}
+
 #
 # releaser targets are defined in _releaser/Dockerfile
 # and are used for Netlify and AWS S3 deployment

scripts/test_go_redirects.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env sh
+
+echo "Testing redirects in data/redirects.yml..."
+
+# Get all redirects from data/redirects.yml
+REDIRECTS=$(yq eval 'keys | .[]' data/redirects.yml)
+LOCAL_REDIRECTS=$(echo $REDIRECTS | awk 'BEGIN { RS = " " } /^\// { print $1 }')
+
+echo "Checking for duplicate redirects..."
+DUPLICATES=$(echo $LOCAL_REDIRECTS | tr ' ' '\n' | sort | uniq -d)
+if [ -n "$DUPLICATES" ]; then
+  echo "Duplicate redirects found:"
+  echo $DUPLICATES
+  exit 1
+fi
+
+echo "Checking for redirects to nonexistent paths..."
+for file in $(echo REDIRECTS | awk 'BEGIN { RS = " " } /^\// { print $1 }'); do
+  if [ ! -e "./public/${file%/*}/index.html" ]; then
+    echo "Redirect to nonexistent path: $file"
+    exit 1
+  fi
+done
+
+echo "All redirects are valid."