new file mode 100755
@@ -0,0 +1,144 @@
+#!/bin/sh
+
+test_description='post index changed hook'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+ mkdir -p dir1 &&
+ touch dir1/file1.txt &&
+ echo testing >dir1/file2.txt &&
+ git add . &&
+ git commit -m "initial"
+'
+
+test_expect_success 'test status, add, commit, others trigger hook without flags set' '
+ mkdir -p .git/hooks &&
+ write_script .git/hooks/post-indexchanged <<-\EOF &&
+ if test "$1" -eq 1; then
+ echo "Invalid combination of flags passed to hook; updated_workdir is set." >testfailure
+ exit 1
+ fi
+ if test "$2" -eq 1; then
+ echo "Invalid combination of flags passed to hook; updated_skipworktree is set." >testfailure
+ exit 1
+ fi
+ if test -f ".git/index.lock"; then
+ echo ".git/index.lock exists" >testfailure
+ exit 3
+ fi
+ if ! test -f ".git/index"; then
+ echo ".git/index does not exist" >testfailure
+ exit 3
+ fi
+ echo "success" >testsuccess
+ EOF
+ mkdir -p dir2 &&
+ touch dir2/file1.txt &&
+ touch dir2/file2.txt &&
+ : force index to be dirty &&
+ test-tool chmtime +60 dir1/file1.txt &&
+ git status &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure &&
+ git add . &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure &&
+ git commit -m "second" &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure &&
+ git checkout -- dir1/file1.txt &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure &&
+ git update-index &&
+ test_path_is_missing testsuccess &&
+ test_path_is_missing testfailure &&
+ git reset --soft &&
+ test_path_is_missing testsuccess &&
+ test_path_is_missing testfailure
+'
+
+test_expect_success 'test checkout and reset trigger the hook' '
+ write_script .git/hooks/post-indexchanged <<-\EOF &&
+ if test "$1" -eq 1 && test "$2" -eq 1; then
+ echo "Invalid combination of flags passed to hook; updated_workdir and updated_skipworktree are both set." >testfailure
+ exit 1
+ fi
+ if test "$1" -eq 0 && test "$2" -eq 0; then
+ echo "Invalid combination of flags passed to hook; neither updated_workdir or updated_skipworktree are set." >testfailure
+ exit 2
+ fi
+ if test "$1" -eq 1; then
+ if test -f ".git/index.lock"; then
+ echo "updated_workdir set but .git/index.lock exists" >testfailure
+ exit 3
+ fi
+ if ! test -f ".git/index"; then
+ echo "updated_workdir set but .git/index does not exist" >testfailure
+ exit 3
+ fi
+ else
+ echo "update_workdir should be set for checkout" >testfailure
+ exit 4
+ fi
+ echo "success" >testsuccess
+ EOF
+ : force index to be dirty &&
+ test-tool chmtime +60 dir1/file1.txt &&
+ git checkout master &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure &&
+ test-tool chmtime +60 dir1/file1.txt &&
+ git checkout HEAD &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure &&
+ test-tool chmtime +60 dir1/file1.txt &&
+ git reset --hard &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure &&
+ git checkout -B test &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure
+'
+
+test_expect_success 'test reset --mixed and update-index triggers the hook' '
+ write_script .git/hooks/post-indexchanged <<-\EOF &&
+ if test "$1" -eq 1 && test "$2" -eq 1; then
+ echo "Invalid combination of flags passed to hook; updated_workdir and updated_skipworktree are both set." >testfailure
+ exit 1
+ fi
+ if test "$1" -eq 0 && test "$2" -eq 0; then
+ echo "Invalid combination of flags passed to hook; neither updated_workdir or updated_skipworktree are set." >testfailure
+ exit 2
+ fi
+ if test "$2" -eq 1; then
+ if test -f ".git/index.lock"; then
+ echo "updated_skipworktree set but .git/index.lock exists" >testfailure
+ exit 3
+ fi
+ if ! test -f ".git/index"; then
+ echo "updated_skipworktree set but .git/index does not exist" >testfailure
+ exit 3
+ fi
+ else
+ echo "updated_skipworktree should be set for reset --mixed and update-index" >testfailure
+ exit 4
+ fi
+ echo "success" >testsuccess
+ EOF
+ : force index to be dirty &&
+ test-tool chmtime +60 dir1/file1.txt &&
+ git reset --mixed --quiet HEAD~1 &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure &&
+ git hash-object -w --stdin <dir1/file2.txt >expect &&
+ git update-index --cacheinfo 100644 "$(cat expect)" dir1/file1.txt &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure &&
+ git update-index --skip-worktree dir1/file2.txt &&
+ git update-index --remove dir1/file2.txt &&
+ test_path_is_file testsuccess && rm -f testsuccess &&
+ test_path_is_missing testfailure
+'
+
+test_done