prefix=refs/missing-indirect-update &&
git symbolic-ref $prefix/symref $prefix/foo &&
cat >expected <<-EOF &&
- fatal: cannot lock ref $Q$prefix/foo$Q: unable to resolve reference $Q$prefix/foo$Q
+ fatal: cannot lock ref $Q$prefix/symref$Q: unable to resolve reference $Q$prefix/foo$Q
EOF
printf "%s\n" "update $prefix/symref $E $D" |
test_must_fail git update-ref --stdin 2>output.err &&
prefix=refs/missing-noderef-update &&
git symbolic-ref $prefix/symref $prefix/foo &&
cat >expected <<-EOF &&
- fatal: cannot lock ref $Q$prefix/symref$Q: can${Q}t resolve old value
+ fatal: cannot lock ref $Q$prefix/symref$Q: reference is missing but expected $D
EOF
printf "%s\n" "option no-deref" "update $prefix/symref $E $D" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
'
-test_expect_failure 'existing old value blocks indirect no-deref create' '
+test_expect_success 'existing old value blocks indirect no-deref create' '
prefix=refs/existing-noderef-create &&
git symbolic-ref $prefix/symref $prefix/foo &&
git update-ref $prefix/foo $C &&
: >.git/$prefix/foo/bar/baz.lock &&
test_when_finished "rm -f .git/$prefix/foo/bar/baz.lock" &&
cat >expected <<-EOF &&
- fatal: cannot lock ref $Q$prefix/foo$Q: there is a non-empty directory $Q.git/$prefix/foo$Q blocking reference $Q$prefix/foo$Q
+ fatal: cannot lock ref $Q$prefix/symref$Q: there is a non-empty directory $Q.git/$prefix/foo$Q blocking reference $Q$prefix/foo$Q
EOF
printf "%s\n" "update $prefix/symref $C" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err &&
cat >expected <<-EOF &&
- fatal: cannot lock ref $Q$prefix/foo$Q: unable to resolve reference $Q$prefix/foo$Q
+ fatal: cannot lock ref $Q$prefix/symref$Q: unable to resolve reference $Q$prefix/foo$Q
EOF
printf "%s\n" "update $prefix/symref $D $C" |
test_must_fail git update-ref --stdin 2>output.err &&
echo "gobbledigook" >.git/$prefix/foo &&
test_when_finished "rm -f .git/$prefix/foo" &&
cat >expected <<-EOF &&
- fatal: cannot lock ref $Q$prefix/foo$Q: unable to resolve reference $Q$prefix/foo$Q: reference broken
+ fatal: cannot lock ref $Q$prefix/symref$Q: unable to resolve reference $Q$prefix/foo$Q: reference broken
EOF
printf "%s\n" "update $prefix/symref $C" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err &&
cat >expected <<-EOF &&
- fatal: cannot lock ref $Q$prefix/foo$Q: unable to resolve reference $Q$prefix/foo$Q: reference broken
+ fatal: cannot lock ref $Q$prefix/symref$Q: unable to resolve reference $Q$prefix/foo$Q: reference broken
EOF
printf "%s\n" "update $prefix/symref $D $C" |
test_must_fail git update-ref --stdin 2>output.err &&
test_cmp expected output.err
'
+test_expect_success 'no bogus intermediate values during delete' '
+ prefix=refs/slow-transaction &&
+ # Set up a reference with differing loose and packed versions:
+ git update-ref $prefix/foo $C &&
+ git pack-refs --all &&
+ git update-ref $prefix/foo $D &&
+ git for-each-ref $prefix >unchanged &&
+ # Now try to update the reference, but hold the `packed-refs` lock
+ # for a while to see what happens while the process is blocked:
+ : >.git/packed-refs.lock &&
+ test_when_finished "rm -f .git/packed-refs.lock" &&
+ {
+ # Note: the following command is intentionally run in the
+ # background. We increase the timeout so that `update-ref`
+ # attempts to acquire the `packed-refs` lock for longer than
+ # it takes for us to do the check then delete it:
+ git -c core.packedrefstimeout=3000 update-ref -d $prefix/foo &
+ } &&
+ pid2=$! &&
+ # Give update-ref plenty of time to get to the point where it tries
+ # to lock packed-refs:
+ sleep 1 &&
+ # Make sure that update-ref did not complete despite the lock:
+ kill -0 $pid2 &&
+ # Verify that the reference still has its old value:
+ sha1=$(git rev-parse --verify --quiet $prefix/foo || echo undefined) &&
+ case "$sha1" in
+ $D)
+ # This is what we hope for; it means that nothing
+ # user-visible has changed yet.
+ : ;;
+ undefined)
+ # This is not correct; it means the deletion has happened
+ # already even though update-ref should not have been
+ # able to acquire the lock yet.
+ echo "$prefix/foo deleted prematurely" &&
+ break
+ ;;
+ $C)
+ # This value should never be seen. Probably the loose
+ # reference has been deleted but the packed reference
+ # is still there:
+ echo "$prefix/foo incorrectly observed to be C" &&
+ break
+ ;;
+ *)
+ # WTF?
+ echo "unexpected value observed for $prefix/foo: $sha1" &&
+ break
+ ;;
+ esac >out &&
+ rm -f .git/packed-refs.lock &&
+ wait $pid2 &&
+ test_must_be_empty out &&
+ test_must_fail git rev-parse --verify --quiet $prefix/foo
+'
+
+test_expect_success 'delete fails cleanly if packed-refs file is locked' '
+ prefix=refs/locked-packed-refs &&
+ # Set up a reference with differing loose and packed versions:
+ git update-ref $prefix/foo $C &&
+ git pack-refs --all &&
+ git update-ref $prefix/foo $D &&
+ git for-each-ref $prefix >unchanged &&
+ # Now try to delete it while the `packed-refs` lock is held:
+ : >.git/packed-refs.lock &&
+ test_when_finished "rm -f .git/packed-refs.lock" &&
+ test_must_fail git update-ref -d $prefix/foo >out 2>err &&
+ git for-each-ref $prefix >actual &&
+ test_i18ngrep "Unable to create $Q.*packed-refs.lock$Q: File exists" err &&
+ test_cmp unchanged actual
+'
+
test_done