git update-index --add path0 &&
t=$(git write-tree)'
-test_expect_failure \
+test_expect_success \
'without -u, git checkout-index smudges stat information.' '
rm -f path0 &&
git read-tree $t &&
git checkout-index -f -a &&
-git diff-files | diff - /dev/null'
+test_must_fail git diff-files --exit-code'
test_expect_success \
'with -u, git checkout-index picks up stat information from new files.' '
rm -f path0 &&
git read-tree $t &&
git checkout-index -u -f -a &&
-git diff-files | diff - /dev/null'
+git diff-files --exit-code'
test_done