test_cmp expect output
'
+cat >expect <<EOF
+:100644 100644 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 0000000000000000000000000000000000000000 M dir1/modified
+EOF
+test_expect_success 'status refreshes the index' '
+ touch dir2/added &&
+ git status &&
+ git diff-files >output &&
+ test_cmp expect output
+'
+
test_expect_success 'setup status submodule summary' '
test_create_repo sm && (
cd sm &&
test_cmp expect output
'
+test_expect_success POSIXPERM 'status succeeds in a read-only repository' '
+ (
+ chmod a-w .git &&
+ # make dir1/tracked stat-dirty
+ >dir1/tracked1 && mv -f dir1/tracked1 dir1/tracked &&
+ git status -s >output &&
+ ! grep dir1/tracked output &&
+ # make sure "status" succeeded without writing index out
+ git diff-files | grep dir1/tracked
+ )
+ status=$?
+ chmod 775 .git
+ (exit $status)
+'
+
test_done