| test_description='filter-branch removal of trees with null sha1' |
| test_expect_success 'setup: base commits' ' |
| test_expect_success 'setup: a commit with a bogus null sha1 in the tree' ' |
| printf "160000 commit $ZERO_OID\\tbroken\\n" |
| echo "add broken entry" >msg && |
| tree=$(git mktree <broken-tree) && |
| commit=$(git commit-tree $tree -p HEAD <msg) && |
| git update-ref HEAD "$commit" |
| # we have to make one more commit on top removing the broken |
| # entry, since otherwise our index does not match HEAD (and filter-branch will |
| # complain). We could make the index match HEAD, but doing so would involve |
| # writing a null sha1 into the index. |
| test_expect_success 'setup: bring HEAD and index in sync' ' |
| git commit -a -m "back to normal" |
| test_expect_success 'noop filter-branch complains' ' |
| test_must_fail git filter-branch \ |
| test_expect_success 'filter commands are still checked' ' |
| test_must_fail git filter-branch \ |
| --index-filter "git rm --cached --ignore-unmatch three.t" |
| test_expect_success 'removing the broken entry works' ' |
| --index-filter "git rm --cached --ignore-unmatch broken" && |
| git log -1 --format=%s >actual && |