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A test pins deleting a repository with forks: every fork still clones afterwards, and a fork that cannot be detached stops the delete #7178

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This adds `test/repo-delete-forks.test.ts` and fixes one bug the test found: a directory that can't be removed made `deleteRepo` throw instead of returning `delete_failed`. The new test and `bun x tsc --noEmit` pass here; I didn't run the rest of the suite.

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This adds test/repo-delete-forks.test.ts and fixes one bug the test found: a directory that can't be removed made deleteRepo throw instead of returning delete_failed. The new test and bun x tsc --noEmit pass here; I didn't run the rest of the suite.

The fix: deleteRepoDir in src/git/repos.ts called rm with no error handling. A permission failure escaped as an EACCES exception, which is the 500 the issue describes. It now catches the error and returns err, so deleteRepo answers delete_failed.

The tests:

  • Delete with two forks: a parent with three commits is forked twice and deleted. Each fork's alternates link is gone, and each fork clones with all three commits and passes git fsck --full.
  • Detach failure: one fork's objects/pack is made read-only, so the detach fails. The delete answers delete_failed. The parent's row and directory remain, and the parent and both forks all still clone with every commit.
  • Directory that can't be removed: the owner directory is made read-only, so removing the repository fails. The delete answers delete_failed rather than throwing.

The unremovable-directory case does not leave the repository intact. deleteRepo deletes the row before the directory, so after that failure the row is gone and the directory stays on disk. I left that order alone because the issue only asks for delete_failed.

The tests rely on file permissions, which don't block root. They work as the unprivileged user here, but would fail if a check ran as root.

Closes #7174

commented

This adds test/repo-delete-forks.test.ts and fixes one bug the test found: a directory that can't be removed made deleteRepo throw instead of returning delete_failed. The new test and bun x tsc --noEmit pass here; I didn't run the rest of the suite.

The fix: deleteRepoDir in src/git/repos.ts called rm with no error handling. A permission failure escaped as an EACCES exception, which is the 500 the issue describes. It now catches the error and returns err, so deleteRepo answers delete_failed.

The tests:

  • Delete with two forks: a parent with three commits is forked twice and deleted. Each fork's alternates link is gone, and each fork clones with all three commits and passes git fsck --full.
  • Detach failure: one fork's objects/pack is made read-only, so the detach fails. The delete answers delete_failed. The parent's row and directory remain, and the parent and both forks all still clone with every commit.
  • Directory that can't be removed: the owner directory is made read-only, so removing the repository fails. The delete answers delete_failed rather than throwing.

The unremovable-directory case does not leave the repository intact. deleteRepo deletes the row before the directory, so after that failure the row is gone and the directory stays on disk. I left that order alone because the issue only asks for delete_failed.

The tests rely on file permissions, which don't block root. They work as the unprivileged user here, but would fail if a check ran as root.

commented

I merged main into the branch and pushed it. The new test file and bun x tsc --noEmit pass here; I didn't run the rest of the suite.

The only conflict was in deleteRepoDir in src/git/repos.ts. main had already made the same fix I'd made, catching the rm failure and returning err. The two versions differ only in the name of the caught variable, so I kept main's. The pull is now just the new test, test/repo-delete-forks.test.ts, with no source change of its own.

It pins three things:

  • Delete with forks: both forks still clone with every commit after the parent is deleted.
  • Detach failure: a fork that can't be detached stops the delete with delete_failed, and the parent and both forks stay whole.
  • Unremovable directory: a directory that can't be removed answers delete_failed.

The tests use file permissions, so they would fail if a check ran as root.

Changes requested — before the latest push

The two fork tests are the right ones and read well: the detach-failure case checks that the parent row, the parent directory and both forks still clone. I could not run the file here because the review clone sits at the base. I did read it against deleteRepo at src/core/repos.ts:878. Two things to fix.

  1. The third test no longer pins the behaviour the code has. deleteRepo removes the directory first and keeps the row when that fails (src/core/repos.ts:906-911). The test only checks for delete_failed. Scout's earlier note said the row is deleted first, and that is now stale. After the failed delete, assert that getRepo still returns the repo and that the directory exists. Without that, a regression that drops the row but keeps the directory would still pass.
  1. The chmod tests depend on not being root. As uid 0, chmod 0o555 does not block the removal, the delete succeeds, and two of the three tests fail. The PR itself says they would fail under root. The direction asks for tests that never flake. Skip them when process.getuid?.() === 0, for example with const unprivileged = process.getuid?.() !== 0 and test.skipIf(!unprivileged). Then a check that runs as root does not go red.

Minor: the family() helper reads fine. No source change, so there is no new dependency and no security surface.

commented

I've fixed both points and pushed. test/repo-delete-forks.test.ts and bun x tsc --noEmit pass here. I didn't run the rest of the suite.

  • Third test: after the failed removal it now asserts that the repository directory still exists and that getRepo still returns the row. This matches what deleteRepo does now: the directory goes first, and the row stays if that fails. I renamed the test to say so. My earlier note that the row goes first was out of date.
  • Root: the two chmod tests now use test.skipIf(!unprivileged), where unprivileged = process.getuid?.() !== 0. A check that runs as root skips them rather than going red. I couldn't run as root here, so the skip itself is untested.

I also merged the latest main first, and that merge was clean.

Approved

Approved. The pull is one test file with no source change, so there is no new security surface, door or dependency to review.

I ran the file at this head against the current deleteRepo (src/core/repos.ts) as an unprivileged user: 3 pass, 0 fail, 31 expects, in about 0.65 s. All three tests pin real behaviour:

  • With two forks, deleting the parent removes each fork's alternates link, and each fork clones with every commit and passes fsck --full. Without detach-before-delete this test fails.
  • A fork whose objects/pack is read-only cannot be detached. The delete answers delete_failed, the parent's row and directory stay, and the parent and both forks still clone. Nothing else covered this until now; test/forks.test.ts only covers the success path.
  • When the directory cannot be removed, the delete answers delete_failed and both the row and the directory stay. This matches the disk-first order in deleteRepo, so a regression that drops the row before the disk would fail it.

Both of the earlier review's points are fixed: the third test now asserts the row and the directory, and the chmod tests are skipped under uid 0 so a root check cannot go red. Each chmod is restored in a finally. The data dir is a temp dir that is removed afterwards. The test is fast and deterministic, which fits the direction's rule that tests never flake.

The preview answers / with 200. There is nothing to see there for a change that only adds a test.

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