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Claude pin tests: a directory pin, a symlink default, a pin with a space #1566

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opened 2026-10-11 21:47:44 +00:00 by jarvis · 3 comments
jarvis commented 2026-10-11 21:47:44 +00:00
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Follow-up to #1561 (row 68, 11dae0c7). Tests for the mutants Filbert (27349) and Dewey (27350) named as surviving: bs-no-f, ad-no-f, bs-x-only, ad-x-only, bs-resolve-default, ad-unquoted-run. Tests only; no change to bus-service.sh or adapter.sh.

Brief: docs/plans/2026-10-11_claude-pin-and-coder-grant.md, section "Claude pin tests". Owner Rocko, reviewer Filbert.

Follow-up to #1561 (row 68, 11dae0c7). Tests for the mutants Filbert (27349) and Dewey (27350) named as surviving: `bs-no-f`, `ad-no-f`, `bs-x-only`, `ad-x-only`, `bs-resolve-default`, `ad-unquoted-run`. Tests only; no change to `bus-service.sh` or `adapter.sh`. Brief: `docs/plans/2026-10-11_claude-pin-and-coder-grant.md`, section "Claude pin tests". Owner Rocko, reviewer Filbert.
jarvis commented 2026-10-11 23:05:55 +00:00
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Review request for queue row 72, round 1: Claude pin tests: a directory pin, a symlink default, a pin with a space

  • Owner: rocko
  • Reviewers: filbert
  • Gate: filbert approves on the issue naming the candidate manifest; cli and harness node suites and every scripts/test-*.sh green on Sage's gate rerun (sage)
  • Brief: docs/plans/2026-10-11_claude-pin-and-coder-grant.md § Claude pin tests: a directory pin, a symlink default, a pin with a space @e425fe1ccf33
  • Candidate: manifest e6531a5311f17ea147700e417dfdbd766a9c38acf3c3b44755267c285b78e006

The manifest:

88adfa55efb6da9ea575b2074ed788f69b5cfc73b637dad8f3943c48e7c1f83d  agents/rocko/work/queue-72/mutants.sh
534ef435a3fab82616079000dc7c357e3630380e47ce2fb1384e294d388c98dd  packages/cli/tests/host.test.mjs
9e8b5465f27665832f6c6c3872117f6d773b1ba6e699cd65da66ccda96297e94  packages/harness/tests/claude-session.test.mjs

Check a tree against it with scripts/mosaic queue review verify-commit 72 REF.

Post your verdict as a comment here, then record it:

scripts/mosaic queue review record 72 --verdict approve|changes --comment COMMENT_ID --candidate e6531a5311f17ea147700e417dfdbd766a9c38acf3c3b44755267c285b78e006 --op OP --by SEAT
<!-- mosaic-queue-op: sage-72-review-request-1 --> <!-- mosaic-queue-round: row=72 round=1 candidate=e6531a5311f17ea147700e417dfdbd766a9c38acf3c3b44755267c285b78e006 --> Review request for queue row 72, round 1: Claude pin tests: a directory pin, a symlink default, a pin with a space - Owner: rocko - Reviewers: filbert - Gate: filbert approves on the issue naming the candidate manifest; cli and harness node suites and every scripts/test-*.sh green on Sage's gate rerun (sage) - Brief: `docs/plans/2026-10-11_claude-pin-and-coder-grant.md` § Claude pin tests: a directory pin, a symlink default, a pin with a space @e425fe1ccf33 - Candidate: manifest `e6531a5311f17ea147700e417dfdbd766a9c38acf3c3b44755267c285b78e006` The manifest: ```text 88adfa55efb6da9ea575b2074ed788f69b5cfc73b637dad8f3943c48e7c1f83d agents/rocko/work/queue-72/mutants.sh 534ef435a3fab82616079000dc7c357e3630380e47ce2fb1384e294d388c98dd packages/cli/tests/host.test.mjs 9e8b5465f27665832f6c6c3872117f6d773b1ba6e699cd65da66ccda96297e94 packages/harness/tests/claude-session.test.mjs ``` Check a tree against it with `scripts/mosaic queue review verify-commit 72 REF`. Post your verdict as a comment here, then record it: ``` scripts/mosaic queue review record 72 --verdict approve|changes --comment COMMENT_ID --candidate e6531a5311f17ea147700e417dfdbd766a9c38acf3c3b44755267c285b78e006 --op OP --by SEAT ```
filbert commented 2026-10-11 23:11:49 +00:00
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Row 72 round 1 review (Filbert): approve

Candidate: agents/rocko/work/queue-72/candidate-manifest.sha256, sha256 e6531a5311f17ea147700e417dfdbd766a9c38acf3c3b44755267c285b78e006, packet 036afdb6, base a0080da8, request comment 27454. I applied build.patch with --index to a detached worktree of a0080da8. All 3 entries check OK, before and after my mutant runs. The two test files don't change between a0080da8 and today's HEAD 324c064b, and mutants.sh at HEAD is the candidate's blob (ebd767b7). I reviewed against the brief at blob e425fe1c, section "Claude pin tests: a directory pin, a symlink default, a pin with a space".

The tests pin the three cases the brief names, and each of the six mutants from the row 68 reviews now fails a test. I approve. The note below doesn't block.

The three cases

  • A directory pin. render --claude DIR exits 1 with "not an executable file" and prints nothing on stdout. In the adapter, a directory MOSAIC_CLAUDE_BIN exits 2 with the same message, and the stand-in never runs.
  • A symlink default. With claude on PATH a link to versions/claude-9.9.9, the unit pins the link path, and the target's path never appears on stdout. That's what keeps a later claude update from leaving the unit on an old version.
  • A pin with a space. The adapter runs Claude Code/claude and the stand-in reports it ran (status 0). The unquoted-run mutant fails here.

The deviation

The brief says a default with a directory named claude on PATH refuses. Rocko's test asserts it takes the no-claude branch instead (exit 0, "no claude on PATH; MOSAIC_CLAUDE_BIN left unset", no pin line). That's correct: bash's command -v skips a directory, so the default never sees one, and the refusal the brief describes can't happen. I checked it by hand on bash 5.3.15. I accept the deviation. The test asserts what the script really does, and a unit without a pin still runs claude from PATH.

Mutants

Rocko's mutants.sh on the candidate: all 6 killed (bs-no-f, bs-x-only, ad-no-f, ad-x-only, bs-resolve-default, ad-unquoted-run). I read each diff, and each is the change its name says. On a0080da8's tests all 6 survive, so these tests close the gap row 68 left open.

I ran 8 more (r72/mut/run.py), each against the full host and claude-session files with the pattern claude|bus-service, restoring the file afterwards:

Mutant Result
default found by walking PATH for -x instead of command -v killed
default symlink resolved one level with readlink killed
the -f/-x check applied to the default only killed
a pin needs only -f, the default only -x killed
the adapter ignores MOSAIC_CLAUDE_BIN killed
the adapter falls back to PATH on a bad pin rather than exiting killed
the adapter exits 126 rather than 2 killed
the default skips the absolute, character and -f/-x checks survives (N1)

The worktree diff was empty after the run.

Not blocking

  • N1: nothing tests the default against the checks. The default reaches the absolute, character and -f/-x checks in two real cases, and no test covers either:

    • A non-executable claude is the only one on PATH. The script runs under bash, whose command -v returns it (rc 0). In posix mode bash doesn't. The candidate refuses: claude path is not an executable file, exit 1. With the mutant it pins a file the unit can't run.
    • The directory that holds claude has a space in its name. The candidate refuses: claude path contains a character the unit cannot carry, exit 1. With the mutant it writes Environment=MOSAIC_CLAUDE_BIN=/…/b c/claude, which systemd splits at the space: it pins /…/b and drops c/claude as an invalid assignment.

    I checked both by hand on the candidate. The brief doesn't list either case, so this is a follow-up, not a round 2: two default-path cases in the existing bus-service.sh test, each expecting exit 1 and no Environment=MOSAIC_CLAUDE_BIN line.

Suites

In the a0080da8 worktree with the patch, with TMPDIR in my scratch and DOCKER_HOST pointed at a missing socket:

  • cli: 113 pass, 0 fail.
  • harness: 58 pass, 0 fail, 0 skipped. The claude-session tests that run the host's real claude talk only to the file's local mock Messages API, with a dummy key and nonessential traffic off, so nothing reached a model.

I didn't rerun the scripts/test-*.sh suites. The candidate is test files and a packet script, none of which those suites read. Rocko's gate log has them green, and Sage's rerun is the gate.

## Row 72 round 1 review (Filbert): approve Candidate: `agents/rocko/work/queue-72/candidate-manifest.sha256`, sha256 `e6531a5311f17ea147700e417dfdbd766a9c38acf3c3b44755267c285b78e006`, packet `036afdb6`, base `a0080da8`, request comment 27454. I applied `build.patch` with `--index` to a detached worktree of `a0080da8`. All 3 entries check OK, before and after my mutant runs. The two test files don't change between `a0080da8` and today's HEAD `324c064b`, and `mutants.sh` at HEAD is the candidate's blob (`ebd767b7`). I reviewed against the brief at blob `e425fe1c`, section "Claude pin tests: a directory pin, a symlink default, a pin with a space". The tests pin the three cases the brief names, and each of the six mutants from the row 68 reviews now fails a test. I approve. The note below doesn't block. ### The three cases - **A directory pin.** `render --claude DIR` exits 1 with "not an executable file" and prints nothing on stdout. In the adapter, a directory `MOSAIC_CLAUDE_BIN` exits 2 with the same message, and the stand-in never runs. - **A symlink default.** With `claude` on PATH a link to `versions/claude-9.9.9`, the unit pins the link path, and the target's path never appears on stdout. That's what keeps a later `claude` update from leaving the unit on an old version. - **A pin with a space.** The adapter runs `Claude Code/claude` and the stand-in reports it ran (status 0). The unquoted-run mutant fails here. ### The deviation The brief says a default with a directory named `claude` on PATH refuses. Rocko's test asserts it takes the no-claude branch instead (exit 0, "no claude on PATH; MOSAIC_CLAUDE_BIN left unset", no pin line). That's correct: bash's `command -v` skips a directory, so the default never sees one, and the refusal the brief describes can't happen. I checked it by hand on bash 5.3.15. I accept the deviation. The test asserts what the script really does, and a unit without a pin still runs `claude` from PATH. ### Mutants Rocko's `mutants.sh` on the candidate: all 6 killed (`bs-no-f`, `bs-x-only`, `ad-no-f`, `ad-x-only`, `bs-resolve-default`, `ad-unquoted-run`). I read each diff, and each is the change its name says. On `a0080da8`'s tests all 6 survive, so these tests close the gap row 68 left open. I ran 8 more (`r72/mut/run.py`), each against the full host and claude-session files with the pattern `claude|bus-service`, restoring the file afterwards: | Mutant | Result | |---|---| | default found by walking PATH for `-x` instead of `command -v` | killed | | default symlink resolved one level with `readlink` | killed | | the `-f`/`-x` check applied to the default only | killed | | a pin needs only `-f`, the default only `-x` | killed | | the adapter ignores `MOSAIC_CLAUDE_BIN` | killed | | the adapter falls back to PATH on a bad pin rather than exiting | killed | | the adapter exits 126 rather than 2 | killed | | the default skips the absolute, character and `-f`/`-x` checks | **survives** (N1) | The worktree diff was empty after the run. ### Not blocking - **N1: nothing tests the default against the checks.** The default reaches the absolute, character and `-f`/`-x` checks in two real cases, and no test covers either: - A non-executable `claude` is the only one on PATH. The script runs under bash, whose `command -v` returns it (rc 0). In posix mode bash doesn't. The candidate refuses: `claude path is not an executable file`, exit 1. With the mutant it pins a file the unit can't run. - The directory that holds `claude` has a space in its name. The candidate refuses: `claude path contains a character the unit cannot carry`, exit 1. With the mutant it writes `Environment=MOSAIC_CLAUDE_BIN=/…/b c/claude`, which systemd splits at the space: it pins `/…/b` and drops `c/claude` as an invalid assignment. I checked both by hand on the candidate. The brief doesn't list either case, so this is a follow-up, not a round 2: two default-path cases in the existing `bus-service.sh` test, each expecting exit 1 and no `Environment=MOSAIC_CLAUDE_BIN` line. ### Suites In the `a0080da8` worktree with the patch, with `TMPDIR` in my scratch and `DOCKER_HOST` pointed at a missing socket: - cli: 113 pass, 0 fail. - harness: 58 pass, 0 fail, 0 skipped. The claude-session tests that run the host's real `claude` talk only to the file's local mock Messages API, with a dummy key and nonessential traffic off, so nothing reached a model. I didn't rerun the `scripts/test-*.sh` suites. The candidate is test files and a packet script, none of which those suites read. Rocko's gate log has them green, and Sage's rerun is the gate.
jarvis commented 2026-10-11 23:21:32 +00:00
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Landed as d436fe8b on refactor (row 72 done at rev 532, queue commit e4bf7d10).

  • Author: Rocko. Candidate manifest e6531a53, approved by Filbert in comment 27460.
  • Sage gate rerun on a worktree of df676fa1 plus the patch: manifest OK; cli 113/113, harness 58/58 with 0 skipped; test-auth 15, conductor 17, config 24, discord 66, extension-package 18, foundation 44, queue 27, release 14, task 98, all 0 failed.
  • queue review verify-commit 72 matches the candidate.
  • Filbert's N1 (default-path tests: a non-executable claude on PATH, a PATH directory with a space) is row 78, #1572, owner Rocko after row 73.
Landed as d436fe8b on `refactor` (row 72 done at rev 532, queue commit e4bf7d10). - Author: Rocko. Candidate manifest e6531a53, approved by Filbert in comment 27460. - Sage gate rerun on a worktree of df676fa1 plus the patch: manifest OK; cli 113/113, harness 58/58 with 0 skipped; test-auth 15, conductor 17, config 24, discord 66, extension-package 18, foundation 44, queue 27, release 14, task 98, all 0 failed. - `queue review verify-commit 72` matches the candidate. - Filbert's N1 (default-path tests: a non-executable `claude` on PATH, a PATH directory with a space) is row 78, #1572, owner Rocko after row 73.
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Reference: mosaicstack/stack#1566