1 files changed, 44 insertions, 0 deletions
diff --git a/t/t4006-diff-mode.sh b/t/t4006-diff-mode.sh
new file mode 100755
index 0000000..e72c6fd
--- /dev/null
+++ b/t/t4006-diff-mode.sh
@@ -0,0 +1,44 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+
+test_description='Test mode change diffs.
+
+'
+. ./test-lib.sh
+
+test_expect_success \
+    'setup' \
+    'echo frotz >rezrov &&
+     git-update-index --add rezrov &&
+     tree=`git-write-tree` &&
+     echo $tree'
+
+if [ "$(git config --get core.filemode)" = false ]
+then
+	say 'filemode disabled on the filesystem, using update-index --chmod=+x'
+	test_expect_success \
+	    'git-update-index --chmod=+x' \
+	    'git-update-index rezrov &&
+	     git-update-index --chmod=+x rezrov &&
+	     git-diff-index $tree >current'
+else
+	test_expect_success \
+	    'chmod' \
+	    'chmod +x rezrov &&
+	     git-update-index rezrov &&
+	     git-diff-index $tree >current'
+fi
+
+_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
+_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
+sed -e 's/\(:100644 100755\) \('"$_x40"'\) \2 /\1 X X /' <current >check
+echo ":100644 100755 X X M	rezrov" >expected
+
+test_expect_success \
+    'verify' \
+    'git diff expected check'
+
+test_done
+