#!/usr/bin/env bash
# Failing-test NAME set for a node:test suite, via the stable TAP reporter (locale-independent).
# Extracted from 99-dryrun.sh's inline capture_fails (mirrors the sc2-regression.sh extraction, 5d112cb) so
# the SAME capture feeds BOTH the dry-run rehearsal (99-dryrun.sh) and the live operator-window gate
# (41-validate-or-regression.sh) — a single source of truth prevents the gate and the rehearsal from
# disagreeing on what "failing" means (the exact class of drift that let the strict window STOP on red the
# dry-run had blessed).
#
# Prints sorted-unique failing test names, one per line. Empty output = the suite reported no `not ok` lines.
# The caller distinguishes "ran clean" from "did not run": sc2-regression.sh treats a missing capture FILE
# as a hard error, but an empty-yet-present file is a legitimate zero-failure set. No pipefail: a no-match
# grep (zero failures) must exit 0, not leak a spurious non-zero up to the caller.
#
# Usage: capture-fails.sh <dir> <node --test command>
set -u
dir="${1:?dir}"
cmd="${2:?node --test command}"
tapcmd="${cmd/node --test/node --test --test-reporter=tap}"
( cd "$dir" && eval "$tapcmd" ) 2>&1 \
  | grep -E '^not ok ' | sed -E 's/^not ok [0-9]+ - //; s/ #.*$//' | sort -u