rig/test/labels-reconcile.sh
dan-claude-bot a0951eacf8 fix(labels): unrecognised check outcomes block, and STALE outranks MISSING
Round 2 review found two ways the "a human could merge this right now"
invariant still leaked, both of which let state:needs-human land on a PR
the button would refuse.

The check-rollup classifier enumerated the outcomes that block and
defaulted the rest to SUCCESS, so ERROR, CANCELLED and STALE fell through
into green. Inverted to an allow-list of the outcomes that DON'T block
(SUCCESS, NEUTRAL, SKIPPED, plus the pending set); everything else,
including an outcome neither enum has today, blocks. The rollup mixes
CheckRun.conclusion with StatusContext.state and an outcome the list
forgets is one we cannot certify as mergeable — a false FAILURE parks the
PR on the agent, a false SUCCESS invites a bad merge. The classifier also
moved out of main() into checks_state(), which is why no fixture caught
this: it was inline in the fetch loop and the jq itself was untestable.

Once CANCELLED blocks, superseded runs must be dropped first — a re-run
does not evict the run it replaced, and judging every entry would strand
every re-run PR in needs-rebase. Each context now collapses to its newest
entry, keyed on workflow + job name because a bare job name is only
unique within its workflow.

decide_state() returned from inside the bot loop on the first MISSING, so
a STALE belonging to a later bot in BOTS was never read: a round that was
both unfinished and staled came out needs-human with nothing bound to the
head. The whole round is now collected before any precedence is applied,
STALE ahead of MISSING. The MISSING-yields-to-an-explicit-human-request
rule is untouched.

Fixtures 29 -> 44, pinning the whole check-outcome enum, the supersede
rule in both orders, and the mixed round at both ends of BOTS.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-20 16:05:39 +00:00

276 lines
14 KiB
Bash

#!/usr/bin/env bash
set -euo pipefail
# Fixture tests for the labels-reconcile state machine: a comment is a
# non-verdict whatever its body says (the AUTHOR escalates by requesting the
# human), a stale approval does not promote unreviewed code, and an explicit
# human request outranks everything.
# Dependency-free beyond jq; no network, no daemon — pure decide_state.
cd "$(dirname "$0")/.."
# shellcheck source=.github/scripts/labels-reconcile.sh
. .github/scripts/labels-reconcile.sh
# The DRAFT/HEAD_SHA/REQUESTED/REVIEWS_JSON assignments below are the state
# machine's inputs, consumed inside the sourced decide_state — not unused.
# shellcheck disable=SC2034
BOT1="${BOTS[0]}" BOT2="${BOTS[1]}" BOT3="${BOTS[2]}"
pass=0 fail=0
expect() { # $1 = description, $2 = want, $3 = got
if [ "$2" = "$3" ]; then
pass=$((pass + 1))
else
fail=$((fail + 1))
printf 'FAIL: %s — want %s, got %s\n' "$1" "$2" "$3"
fi
}
rev() { # $1=login $2=state $3=commit $4=body $5=submitted_at → one review object
jq -n --arg u "$1" --arg s "$2" --arg c "$3" --arg b "$4" --arg t "$5" \
'{user: {login: $u}, state: $s, commit_id: $c, body: $b, submitted_at: $t}'
}
reviews() { jq -s '.' <<<"$*"; } # collect review objects into an array
# -- drafts are building, whoever is requested --------------------------------
DRAFT=true HEAD_SHA=head1 REQUESTED="" REVIEWS_JSON='[]'
expect "draft PR is building" state:building "$(decide_state)"
# -- fresh ready PR with bots requested ---------------------------------------
DRAFT=false REQUESTED="$BOT1
$BOT2
$BOT3" REVIEWS_JSON='[]'
expect "requested bots mean bots-reviewing" state:bots-reviewing "$(decide_state)"
# -- a bot that never reviewed keeps the round open ---------------------------
REQUESTED="" REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" APPROVED head1 "" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)")"
expect "missing bot review means bots-reviewing" state:bots-reviewing "$(decide_state)"
# -- a comment is a non-verdict, agreement body or not: the author escalates --
REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" COMMENTED head1 "✅ **Reviewed — I agree with everything.**" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)")"
expect "comment-only agreement still parks on the author" state:addressing "$(decide_state)"
# ...and the author's escalation — requesting the human — flips it
REQUESTED="$HUMAN"
expect "author escalation flips to needs-human" state:needs-human "$(decide_state)"
REQUESTED=""
# -- three formal approvals need no author judgment ---------------------------
REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" APPROVED head1 "" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)")"
expect "three formal approvals reach needs-human" state:needs-human "$(decide_state)"
# -- a comment WITHOUT a verdict parks the PR on the agent --------------------
REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" COMMENTED head1 "🔧 Reviewed — I agree with most; feedback below." t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)")"
expect "comment without verdict is addressing" state:addressing "$(decide_state)"
# -- changes requested blocks, at any head ------------------------------------
REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" CHANGES_REQUESTED old1 "blockers below" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)")"
expect "changes-requested blocks even from an old head" state:addressing "$(decide_state)"
# -- a stale approval must not promote unreviewed code ------------------------
REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" APPROVED old1 "" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)")"
expect "stale approval is addressing (agent owes re-request)" state:addressing "$(decide_state)"
# -- a re-requested bot reopens the round even with an old approval on file ---
REQUESTED="$BOT1"
expect "re-requested bot means bots-reviewing" state:bots-reviewing "$(decide_state)"
REQUESTED=""
# -- only the LATEST review per bot counts ------------------------------------
REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" CHANGES_REQUESTED head1 "blockers" t1)" \
"$(rev "$BOT1" APPROVED head1 "" t2)" \
"$(rev "$BOT2" APPROVED head1 "" t3)" \
"$(rev "$BOT3" APPROVED head1 "" t4)")"
expect "later approval supersedes earlier block" state:needs-human "$(decide_state)"
# -- an explicit human request outranks the bot rounds ------------------------
REQUESTED="$HUMAN" REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" COMMENTED head1 "feedback, no verdict" t1)")"
expect "human requested outranks bots" state:needs-human "$(decide_state)"
REQUESTED=""
# -- human CHANGES_REQUESTED puts the ball back on the agent ------------------
REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" APPROVED head1 "" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)" \
"$(rev "$HUMAN" CHANGES_REQUESTED head1 "not yet" t4)")"
expect "human block with bots approving is addressing" state:addressing "$(decide_state)"
# ...and re-requesting the human hands it back to them
REQUESTED="$HUMAN"
expect "re-requested human is needs-human again" state:needs-human "$(decide_state)"
REQUESTED=""
# -- an old human comment must not wedge the handoff (codex, #85 round 3) -----
REVIEWS_JSON="$(reviews \
"$(rev "$HUMAN" COMMENTED old1 "early thoughts" t0)" \
"$(rev "$BOT1" APPROVED head1 "" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)")"
expect "old human comment + three approvals is needs-human" state:needs-human "$(decide_state)"
expect "old human comment still needs a fresh request" needed "$(human_request_needed && echo needed || echo not-needed)"
# ...a stale human APPROVAL likewise needs a re-request for the new head
REVIEWS_JSON="$(reviews \
"$(rev "$HUMAN" APPROVED old1 "" t0)" \
"$(rev "$BOT1" APPROVED head1 "" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)")"
expect "stale human approval needs a fresh request" needed "$(human_request_needed && echo needed || echo not-needed)"
# ...a HEAD-CURRENT human approval needs nothing more
REVIEWS_JSON="$(reviews \
"$(rev "$HUMAN" APPROVED head1 "" t0)" \
"$(rev "$BOT1" APPROVED head1 "" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)")"
expect "head-current human approval needs no request" not-needed "$(human_request_needed && echo needed || echo not-needed)"
# ...and a live request suppresses re-requesting
REQUESTED="$HUMAN"
expect "live human request suppresses re-request" not-needed "$(human_request_needed && echo needed || echo not-needed)"
REQUESTED=""
# ---------------------------------------------------------------------------
# #136: state:needs-human must mean "a human could merge this RIGHT NOW".
# Both cases below were observed live in this repo on 2026-07-20, and both
# showed state:needs-human while being unmergeable in different ways.
# ---------------------------------------------------------------------------
ALL_APPROVE="$(reviews \
"$(rev "$BOT1" APPROVED head1 "" t1)" \
"$(rev "$BOT2" APPROVED head1 "" t2)" \
"$(rev "$BOT3" APPROVED head1 "" t3)")"
# -- flavour 1: not mergeable. The merge button is disabled, yet the board
# said "your turn" on #119/#120/#127 for hours.
DRAFT=false HEAD_SHA=head1 REQUESTED="" REVIEWS_JSON="$ALL_APPROVE" MERGEABLE=CONFLICTING CHECKS=SUCCESS
expect "a CONFLICTING PR is needs-rebase, not needs-human" state:needs-rebase "$(decide_state)"
REQUESTED="$HUMAN"
expect "...even with the human explicitly requested" state:needs-rebase "$(decide_state)"
# -- red CI is the same claim: not something a human should merge.
REQUESTED="" MERGEABLE=MERGEABLE CHECKS=FAILURE
expect "a red PR is needs-rebase" state:needs-rebase "$(decide_state)"
REQUESTED="$HUMAN"
expect "...and a human request does not override red CI" state:needs-rebase "$(decide_state)"
# -- UNKNOWN is NOT unmergeable. GitHub reports it for ~a minute after every
# merge while it recomputes; treating it as broken would flap every open PR
# into needs-rebase on each merge — worse than the bug being fixed.
REQUESTED="" MERGEABLE=UNKNOWN CHECKS=PENDING
expect "UNKNOWN mergeability does not trigger needs-rebase" state:needs-human "$(decide_state)"
# -- flavour 2 (the dangerous one): mergeable, green, human requested, and
# NOBODY has reviewed this head. Observed on #119 after a rebase: every
# signal read "merge me" and nothing on the page contradicted it.
MERGEABLE=MERGEABLE CHECKS=SUCCESS REQUESTED="$HUMAN"
REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" APPROVED oldhead "" t1)" \
"$(rev "$BOT2" APPROVED oldhead "" t2)" \
"$(rev "$BOT3" APPROVED oldhead "" t3)")"
expect "stale approvals outrank the human request (nobody reviewed this tree)" state:addressing "$(decide_state)"
# -- ...and a round that is BOTH unfinished and staled is still the agent's.
# Deciding inside the bot loop made this depend on BOTS order: the MISSING
# returned before any later bot's STALE was read, so the mixed round came
# out needs-human with nothing bound to the head. Pinned at both ends of
# the array, because the whole failure was one of ordering.
MERGEABLE=MERGEABLE CHECKS=SUCCESS REQUESTED="$HUMAN"
REVIEWS_JSON="$(reviews \
"$(rev "$BOT1" APPROVED oldhead "" t1)" \
"$(rev "$BOT2" APPROVED oldhead "" t2)")"
expect "stale approvals + a bot yet to review is addressing, not needs-human" \
state:addressing "$(decide_state)"
REVIEWS_JSON="$(reviews "$(rev "$BOT3" APPROVED oldhead "" t3)")"
expect "...and the same when the stale verdict is the LAST bot in BOTS" \
state:addressing "$(decide_state)"
# -- but an UNFINISHED round still yields to an explicit human request: a
# maintainer pulling a PR to themselves early is deliberate, and was the
# original precedence. MISSING differs from STALE — nobody has reviewed
# YET, versus everyone reviewed something else.
REVIEWS_JSON="$(reviews "$(rev "$BOT1" APPROVED head1 "" t1)")"
expect "an unfinished round still yields to an explicit human request" state:needs-human "$(decide_state)"
REQUESTED=""
expect "...and without that request it is still bots-reviewing" state:bots-reviewing "$(decide_state)"
# ---------------------------------------------------------------------------
# checks_state: the rollup classifier. It lived inline in main() for the first
# round of this PR, which is why nothing here caught it calling ERROR,
# CANCELLED and STALE green. Extracted so the enum can be pinned down.
# ---------------------------------------------------------------------------
rollup() { jq -n --argjson c "$1" '{statusCheckRollup: $c}'; }
run_() { jq -n --arg n "$1" --arg o "$2" --arg t "${3:-2026-07-20T15:00:00Z}" \
'{__typename:"CheckRun", workflowName:"ci", name:$n, conclusion:$o, completedAt:$t}'; }
ctx_() { jq -n --arg n "$1" --arg s "$2" --arg t "${3:-2026-07-20T15:00:00Z}" \
'{__typename:"StatusContext", context:$n, state:$s, createdAt:$t}'; }
expect "no checks at all is NONE" NONE "$(rollup '[]' | checks_state)"
expect "all green is SUCCESS" SUCCESS \
"$(rollup "[$(run_ a SUCCESS),$(run_ b SUCCESS)]" | checks_state)"
expect "a queued run is PENDING" PENDING \
"$(rollup "[$(run_ a SUCCESS),$(run_ b QUEUED)]" | checks_state)"
expect "a plain failure is FAILURE" FAILURE \
"$(rollup "[$(run_ a SUCCESS),$(run_ b FAILURE)]" | checks_state)"
# -- the round-1 gap: outcomes that are neither success nor pending, and that
# leave a required check unsatisfied. All three reached the old `else`.
expect "a commit status ERROR blocks" FAILURE \
"$(rollup "[$(run_ a SUCCESS),$(ctx_ lint ERROR)]" | checks_state)"
expect "a CANCELLED run blocks" FAILURE \
"$(rollup "[$(run_ a SUCCESS),$(run_ b CANCELLED)]" | checks_state)"
expect "a STALE run blocks" FAILURE \
"$(rollup "[$(run_ a SUCCESS),$(run_ b STALE)]" | checks_state)"
expect "an outcome the enum does not know blocks, it does not pass" FAILURE \
"$(rollup "[$(run_ a SUCCESS),$(run_ b SOME_FUTURE_STATE)]" | checks_state)"
# -- NEUTRAL and SKIPPED satisfy branch protection; path-filtered jobs skip
# constantly, and calling that red would park every PR on the agent.
expect "NEUTRAL and SKIPPED are not failures" SUCCESS \
"$(rollup "[$(run_ a SUCCESS),$(run_ b NEUTRAL),$(run_ c SKIPPED)]" | checks_state)"
# -- latest-wins. The rollup keeps superseded runs, so this PR's own tip
# carried a CANCELLED `scope` beside the SUCCESS `scope` that replaced it.
# Without collapsing, making CANCELLED block would strand it forever.
expect "a re-run supersedes the cancelled original" SUCCESS \
"$(rollup "[$(run_ scope CANCELLED 2026-07-20T15:19:39Z),\
$(run_ scope SUCCESS 2026-07-20T15:19:45Z)]" | checks_state)"
expect "...and the reverse order is not a re-run passing, it is one failing" FAILURE \
"$(rollup "[$(run_ scope SUCCESS 2026-07-20T15:19:39Z),\
$(run_ scope CANCELLED 2026-07-20T15:19:45Z)]" | checks_state)"
# same job name in a different workflow is a different context, not a re-run
expect "same name in another workflow does not supersede" FAILURE \
"$(rollup "[$(jq -n '{__typename:"CheckRun",workflowName:"labels",name:"scope",conclusion:"FAILURE",completedAt:"2026-07-20T15:00:00Z"}'),\
$(run_ scope SUCCESS 2026-07-20T15:19:45Z)]" | checks_state)"
# -- the classifier feeds the state machine: a cancelled required check must
# take the PR off the human's plate, which is the whole point of #136.
DRAFT=false HEAD_SHA=head1 REQUESTED="$HUMAN" REVIEWS_JSON="$ALL_APPROVE" MERGEABLE=MERGEABLE
CHECKS="$(rollup "[$(run_ a SUCCESS),$(run_ b CANCELLED)]" | checks_state)"
expect "a cancelled check reaches decide_state as needs-rebase" state:needs-rebase "$(decide_state)"
# -- the happy path survives all of the above.
REVIEWS_JSON="$ALL_APPROVE" MERGEABLE=MERGEABLE CHECKS=SUCCESS REQUESTED=""
expect "mergeable + green + three head-current approvals is needs-human" state:needs-human "$(decide_state)"
# -- and a draft outranks everything, including a conflict.
DRAFT=true MERGEABLE=CONFLICTING
expect "a draft is building even when conflicted" state:building "$(decide_state)"
DRAFT=false MERGEABLE=MERGEABLE CHECKS=SUCCESS REQUESTED="" REVIEWS_JSON='[]'
printf 'labels-reconcile tests: %d passed, %d failed\n' "$pass" "$fail"
[ "$fail" -eq 0 ]