CI: add macOS job to verify mkfs.simplefs

Add a CI script to build mkfs.simplefs and format a test image on
macOS runners.

Signed-off-by: hsule <leann9001@gmail.com>

Author: hsule

.ci/test-mkfs-macos.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -e
+
+IMAGE=test.img
+IMAGESIZE=50
+MKFS=mkfs.simplefs
+
+function build_mkfs()
+{
+    make $MKFS
+}
+
+function test_mkfs()
+{
+    dd if=/dev/zero of=$IMAGE bs=1M count=$IMAGESIZE 2>/dev/null
+    ./$MKFS $IMAGE
+}
+
+build_mkfs
+test_mkfs

.github/workflows/main.yaml

@@ -26,3 +26,13 @@ jobs:
             .ci/check-newline.sh
             .ci/check-format.sh
         shell: bash
+
+  mkfs_macos:
+    runs-on: macos-latest
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v4
+      - name: test mkfs.simplefs on macOS
+        run: |
+            .ci/test-mkfs-macos.sh
+        shell: bash