From 0a5dac2f71380e57f77b27acf23db70a158ebb78 Mon Sep 17 00:00:00 2001
From: Luke Arms <luke@linacreative.com>
Date: Tue, 7 Jan 2025 20:20:49 +1100
Subject: [PATCH] Report changes to output vs. latest release in CI integration
 tests

---
 .github/workflows/ci.yml | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index acb1d39c..dac9bd87 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -344,10 +344,39 @@ jobs:
         uses: actions/download-artifact@v4
         with:
           name: ${{ needs.build.outputs.artifact_name }}
+          path: ~
 
       - name: Run pretty-php
+        id: run-pretty-php
         env:
           artifact_path: ${{ needs.build.outputs.artifact_path }}
+          repository: ${{ matrix.repository }}
         run: |
-          php "$artifact_path" --print-config ${{ matrix.args }} | tee .prettyphp
-          php "$artifact_path" --quiet --timers || { status=$? && [[ $status -eq 4 ]] || (exit $status); }
+          php ~/"$artifact_path" --print-config ${{ matrix.args }} | tee .prettyphp
+          php ~/"$artifact_path" --quiet --timers ||
+            { status=$? && [[ $status -eq 4 ]] || (exit $status); }
+
+          printf '\nComparing with output from latest release\n\n'
+          latest_path=~/pretty-php-latest.phar
+          diff_path=~/${repository%/*}.diff
+          : >"$diff_path"
+
+          shopt -s extglob
+
+          curl -fLo "$latest_path" https://github.com/lkrms/pretty-php/releases/latest/download/pretty-php.phar &&
+            git add !(.prettyphp) &&
+            git restore -s HEAD . &&
+            { php "$latest_path" --quiet --timers ||
+              { status=$? && [[ $status -eq 4 ]] || (exit $status); }; } &&
+            git diff -R --exit-code | tee "$diff_path" &&
+            printf '\nNo differences found\n' || true
+
+          printf 'diff_name=%s\n' "${diff_path##*/}" >>"$GITHUB_OUTPUT"
+          printf 'diff_path=%s\n' "$([[ ! -s $diff_path ]] || printf '%s\n' "$diff_path")" >>"$GITHUB_OUTPUT"
+
+      - name: Upload diff artifact
+        if: ${{ !cancelled() && !failure() && steps.run-pretty-php.outputs.diff_path != '' }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ steps.run-pretty-php.outputs.diff_name }}
+          path: ${{ steps.run-pretty-php.outputs.diff_path }}