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 <trast@xxxxxxxxxxxxxxx>
---
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/$new
+git update-ref -d refs/heads/bogus
+git read-tree -u --reset HEAD
+
+test_expect_success 'branch pointing to non-commit' '
+ git rev-parse HEAD^{tree} > .git/refs/heads/invalid &&
+ git fsck 2>&1 | tee out &&
+ grep "not a commit" out
+'
+
+git update-ref -d refs/heads/invalid
+
+cat > invalid-tag <<EOF
+object ffffffffffffffffffffffffffffffffffffffff
+type commit
+tag invalid
+tagger T A Gger <tagger@xxxxxxxxxxx> 1234567890 -0000
+
+This is an invalid tag.
+EOF
+
+test_expect_success 'tag pointing to nonexistent' '
+ tag=$(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 $(echo blob | git hash-object -w --stdin)
+type commit
+tag wrong
+tagger T A Gger <tagger@xxxxxxxxxxx> 1234567890 -0000
+
+This is an invalid tag.
+EOF
+
+test_expect_success 'tag pointing to something else than its type' '
+ tag=$(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
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