t7006: modernize calls to unset

diff --git a/t/t0004-unwritable.sh b/t/t0004-unwritable.sh
index 2342ac5788a9976b591cb78593279f092d1dc2f6..e3137d638ee5bb07b9278c1a9b90a207ad024a08 100755 (executable)
--- a/t/t0004-unwritable.sh
+++ b/t/t0004-unwritable.sh
@@ -15,54 +15,30 @@ test_expect_success setup '
 
 '
 
-test_expect_success POSIXPERM 'write-tree should notice unwritable repository' '
-
-       (
-               chmod a-w .git/objects .git/objects/?? &&
-               test_must_fail git write-tree
-       )
-       status=$?
-       chmod 775 .git/objects .git/objects/??
-       (exit $status)
-
+test_expect_success POSIXPERM,SANITY 'write-tree should notice unwritable repository' '
+       test_when_finished "chmod 775 .git/objects .git/objects/??" &&
+       chmod a-w .git/objects .git/objects/?? &&
+       test_must_fail git write-tree
 '
 
-test_expect_success POSIXPERM 'commit should notice unwritable repository' '
-
-       (
-               chmod a-w .git/objects .git/objects/?? &&
-               test_must_fail git commit -m second
-       )
-       status=$?
-       chmod 775 .git/objects .git/objects/??
-       (exit $status)
-
+test_expect_success POSIXPERM,SANITY 'commit should notice unwritable repository' '
+       test_when_finished "chmod 775 .git/objects .git/objects/??" &&
+       chmod a-w .git/objects .git/objects/?? &&
+       test_must_fail git commit -m second
 '
 
-test_expect_success POSIXPERM 'update-index should notice unwritable repository' '
-
-       (
-               echo 6O >file &&
-               chmod a-w .git/objects .git/objects/?? &&
-               test_must_fail git update-index file
-       )
-       status=$?
-       chmod 775 .git/objects .git/objects/??
-       (exit $status)
-
+test_expect_success POSIXPERM,SANITY 'update-index should notice unwritable repository' '
+       test_when_finished "chmod 775 .git/objects .git/objects/??" &&
+       echo 6O >file &&
+       chmod a-w .git/objects .git/objects/?? &&
+       test_must_fail git update-index file
 '
 
-test_expect_success POSIXPERM 'add should notice unwritable repository' '
-
-       (
-               echo b >file &&
-               chmod a-w .git/objects .git/objects/?? &&
-               test_must_fail git add file
-       )
-       status=$?
-       chmod 775 .git/objects .git/objects/??
-       (exit $status)
-
+test_expect_success POSIXPERM,SANITY 'add should notice unwritable repository' '
+       test_when_finished "chmod 775 .git/objects .git/objects/??" &&
+       echo b >file &&
+       chmod a-w .git/objects .git/objects/?? &&
+       test_must_fail git add file
 '
 
 test_done