From 380fcb447fbb309f1037064baa79815622fdfc3d Mon Sep 17 00:00:00 2001
From: Rick Ossendrijver <rick.ossendrijver@gmail.com>
Date: Mon, 30 Oct 2023 13:54:56 +0100
Subject: [PATCH] DRAFT: Make integration-tests setup Mac compatible

---
 .github/workflows/run-integration-tests.yml |  5 +++-
 integration-tests/checkstyle-10.12.4.sh     | 30 ++++++++++++++++-----
 2 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/run-integration-tests.yml b/.github/workflows/run-integration-tests.yml
index a51bba27068..66d1b454053 100644
--- a/.github/workflows/run-integration-tests.yml
+++ b/.github/workflows/run-integration-tests.yml
@@ -14,9 +14,12 @@ permissions:
 jobs:
   run-integration-tests:
     name: On-demand integration test
+    strategy:
+      matrix:
+        os: [ ubuntu-22.04, macos-12 ]
+    runs-on: ${{ matrix.os }}
     if: |
       github.event.issue.pull_request && contains(github.event.comment.body, '/integration-test')
-    runs-on: ubuntu-22.04
     steps:
       - name: Check out code
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
diff --git a/integration-tests/checkstyle-10.12.4.sh b/integration-tests/checkstyle-10.12.4.sh
index a6bf87bd195..c8df4e5712e 100755
--- a/integration-tests/checkstyle-10.12.4.sh
+++ b/integration-tests/checkstyle-10.12.4.sh
@@ -2,7 +2,10 @@
 
 set -e -u -o pipefail
 
-integration_test_root="$(readlink -f "$(dirname "${0}")")"
+integration_test_root="$(cd `dirname -- $0` && pwd)"
+integration_test_root_2="$(readlink -f "$(dirname "${0}")")"
+echo "1: ${integration_test_root}"
+echo "2: ${integration_test_root_2}"
 error_prone_support_root="${integration_test_root}/.."
 repos_root="${integration_test_root}/.repos"
 
@@ -25,6 +28,21 @@ else
   trap 'rm -rf -- "${report_directory}"' INT TERM HUP EXIT
 fi
 
+case "$(uname -s)" in
+  Linux*)
+    grep_command=grep
+    sed_command=sed
+    ;;
+  Darwin*)
+    grep_command=ggrep
+    sed_command=gsed
+    ;;
+  *)
+    echo "Unsupported distribution $(uname -s) for this script."
+    exit 1
+    ;;
+esac
+
 # XXX: Configure Renovate to manage the AssertJ version declared here.
 shared_build_flags="
   -Perror-prone-compile,error-prone-test-compile
@@ -48,14 +66,14 @@ error_prone_shared_flags='-XepExcludedPaths:(\Q${project.basedir}${file.separato
 
 error_prone_patch_flags="${error_prone_shared_flags} -XepPatchLocation:IN_PLACE -XepPatchChecks:$(
   find "${error_prone_support_root}" -path "*/META-INF/services/com.google.errorprone.bugpatterns.BugChecker" -print0 \
-    | xargs -0 grep -hoP '[^.]+$' \
+    | xargs -0 ${grep_command} -hoP '[^.]+$' \
     | paste -s -d ','
 )"
 
 error_prone_validation_flags="${error_prone_shared_flags} -XepDisableAllChecks $(
   find "${error_prone_support_root}" -path "*/META-INF/services/com.google.errorprone.bugpatterns.BugChecker" -print0 \
-    | xargs -0 grep -hoP '[^.]+$' \
-    | sed -r 's,(.*),-Xep:\1:WARN,' \
+    | xargs -0 ${grep_command} -hoP '[^.]+$' \
+    | ${sed_command} -r 's,(.*),-Xep:\1:WARN,' \
     | paste -s -d ' '
 )"
 
@@ -151,12 +169,12 @@ mvn ${shared_build_flags} \
 # Collect the applied changes.
 expected_changes="${integration_test_root}/${test_name}-expected-changes.patch"
 actual_changes="${report_directory}/${test_name}-changes.patch"
-(git diff "${diff_base}"..HEAD | grep -vP '^(diff|index)' || true) > "${actual_changes}"
+(git diff "${diff_base}"..HEAD | ${grep_command} -vP '^(diff|index)' || true) > "${actual_changes}"
 
 # Collect the warnings reported by Error Prone Support checks.
 expected_warnings="${integration_test_root}/${test_name}-expected-warnings.txt"
 actual_warnings="${report_directory}/${test_name}-validation-build-warnings.txt"
-(grep -oP "(?<=^\\Q[WARNING] ${PWD}/\\E).*" "${validation_build_log}" | grep -P '\] \[' || true) | LC_ALL=C sort > "${actual_warnings}"
+(${grep_command} -oP "(?<=^\\Q[WARNING] ${PWD}/\\E).*" "${validation_build_log}" | ${grep_command} -P '\] \[' || true) | LC_ALL=C sort > "${actual_warnings}"
 
 # Persist or validate the applied changes and reported warnings.
 if [ -n "${do_sync}" ]; then