[PATCH v5] Test fsck a bit harder
From: Thomas Rast <hidden>
Date: 2016-06-15 22:46:18
Subsystem:
the rest · Maintainer:
Linus Torvalds
git-fsck, of all tools, has very few tests. This adds some more: * a corrupted object; * a branch pointing to a non-commit; * a tag pointing to a nonexistent object; * and a tag pointing to an object of a type other than what the tag itself claims. Some of the involved shell programming is due to Johannes Sixt. Signed-off-by: Thomas Rast <redacted> --- Sorry for taking so long to fix this. Johannes Sixt wrote:
This is wrong: It does not test the exist status. In a pipeline, the shell looks only at the exit status of the last command. You really want this as test_must_fail git fsck >out 2>&1 &&
You're right.
If you want to have it more verbose, add 'cat out &&'. But IMHO that is overengineered. If the test detects a regression in the future, it is easy to inspect the file out if necessary.
I usually try to write the tests such that the cause of failure should be reasonably obvious from the verbose output. But I don't really care enough to insert stray cats either... t/t1450-fsck.sh | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 69 insertions(+), 0 deletions(-)
diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh
index 4597af0..d4a83a1 100755
--- a/t/t1450-fsck.sh
+++ b/t/t1450-fsck.sh@@ -28,4 +28,73 @@ test_expect_success 'loose objects borrowed from alternate are not missing' ' ) ' +# Corruption tests follow. Make sure to remove all traces of the +# specific corruption you test afterwards, lest a later test trip over +# it. + +test_expect_success 'object with bad sha1' ' + sha=$(echo blob | git hash-object -w --stdin) && + echo $sha && + old=$(echo $sha | sed "s+^..+&/+") && + new=${old%/*}/ffffffffffffffffffffffffffffffffffffff && + sha=${new%/*}${new##*/} && + mv .git/objects/$old .git/objects/$new && + git update-index --add --cacheinfo 100644 $sha foo && + tree=$(git write-tree) && + cmt=$(echo bogus | git commit-tree $tree) && + git update-ref refs/heads/bogus $cmt && + test_must_fail git fsck >out 2>&1 && + grep "$sha.*corrupt" out +' + +rm -f .git/objects/$new +git update-ref -d refs/heads/bogus +git read-tree -u --reset HEAD + +test_expect_success 'branch pointing to non-commit' ' + git rev-parse HEAD^{tree} > .git/refs/heads/invalid && + git fsck 2>&1 | tee out && + grep "not a commit" out +' + +git update-ref -d refs/heads/invalid + +cat > invalid-tag <<EOF +object ffffffffffffffffffffffffffffffffffffffff +type commit +tag invalid +tagger T A Gger <tagger@example.com> 1234567890 -0000 + +This is an invalid tag. +EOF + +test_expect_success 'tag pointing to nonexistent' ' + tag=$(git hash-object -t tag -w --stdin < invalid-tag) && + echo $tag > .git/refs/tags/invalid && + test_must_fail git fsck >out 2>&1 && + grep "missing commit ffffffffffffffffffffffffffffffffffffffff" out +' + +rm .git/refs/tags/invalid +rm -f .git/objects/$(echo $tag | sed "s#^..#&/#") + +cat > wrong-tag <<EOF +object $(echo blob | git hash-object -w --stdin) +type commit +tag wrong +tagger T A Gger <tagger@example.com> 1234567890 -0000 + +This is an invalid tag. +EOF + +test_expect_success 'tag pointing to something else than its type' ' + tag=$(git hash-object -t tag -w --stdin < wrong-tag) && + echo $tag > .git/refs/tags/wrong && + test_must_fail git fsck >out 2>&1 && + grep "Object.*is a blob, not a commit" out +' + +rm .git/refs/tags/wrong + + test_done
--
1.6.2.rc2.289.g2fa25