#!/usr/bin/env bash
# Fast test layer — analyze + format + unit + widget + golden.
#
# Two modes (T-192):
#   ci/test.sh              dev inner loop — NO coverage, parallel. ~20s warm.
#   ci/test.sh --coverage   gate run — instrumented; writes coverage/lcov.info
#                           for coverage-gate. ~36s (coverage is the floor and
#                           is concurrency-insensitive, measured — so no
#                           --concurrency here; it buys nothing).
#
# Both pass `--timeout 60s` so a hung test (a stray pumpAndSettle, or a
# real-time deadlock) fails fast instead of wedging the runner for ~10 min and
# stalling the pre-push gate. (Use the pumpAsync helper in tests; never
# pumpAndSettle / Future.delayed(Duration.zero) inside testWidgets.)
set -euo pipefail
cd "$(dirname "$0")/.."

# Reporter: failures-only keeps the gate output to failing tests + a final
# pass/fail count, instead of one line per test (the `expanded` reporter the
# runner picks when stdout isn't a TTY — which buries real failures in
# thousands of pass lines). Override with TEST_REPORTER=expanded when
# debugging a specific run. (T-242)
REPORTER="${TEST_REPORTER:-failures-only}"

coverage=0
[[ "${1:-}" == "--coverage" ]] && coverage=1

echo "==> flutter analyze"
flutter analyze

echo "==> dart format (whole tree)"
dart format --set-exit-if-changed .

echo "==> dart test (pty — unreliable under the flutter test runner; serial)"
# --concurrency=1: these spawn real PTYs and compete for fds when run in
# parallel, which flaked them (registry/session). Serialize — the proper fix
# for resource-bound tests, vs. the old per-test `retry:` band-aid. (T-193)
dart test -r "$REPORTER" --concurrency=1 --tags pty test/pty/session_test.dart test/panes/registry_test.dart

# The parallel pool excludes both pty (runs under dart test, above) and
# serial-tagged tests (concurrency-vulnerable — run in their own --concurrency=1
# pass below). See dart_test.yaml + T-193.
if [[ "$coverage" == 1 ]]; then
  # Each pass writes its raw coverage into a per-run temp dir (via
  # --coverage-path), never the shared coverage/lcov.info / lcov.parallel.info.
  # So a concurrent `flutter test --coverage` — a second push gate, or a
  # `make test` during a push — can't race or delete this run's intermediates
  # (which crashed merge_lcov with FileNotFoundError). Only the final merged
  # result lands in coverage/lcov.info, via an atomic rename within coverage/.
  # (T-345)
  COV_TMP="$(mktemp -d "${TMPDIR:-/tmp}/clide-cov.XXXXXX")"
  trap 'rm -rf "$COV_TMP" "coverage/.lcov.$$.info"' EXIT
  echo "==> flutter test --coverage (parallel pool; excludes pty + serial)"
  flutter test -r "$REPORTER" --coverage --coverage-path "$COV_TMP/parallel.info" --exclude-tags "pty || serial" --timeout 60s
  echo "==> flutter test --coverage (serial-tagged; --concurrency=1)"
  flutter test -r "$REPORTER" --coverage --coverage-path "$COV_TMP/serial.info" --tags serial --concurrency=1 --timeout 60s
  echo "==> merge coverage (parallel + serial passes → coverage/lcov.info)"
  mkdir -p coverage
  python3 ci/merge_lcov.py "$COV_TMP/parallel.info" "$COV_TMP/serial.info" > "coverage/.lcov.$$.info"
  mv -f "coverage/.lcov.$$.info" coverage/lcov.info
else
  echo "==> flutter test (dev; parallel pool, excludes pty + serial)"
  flutter test -r "$REPORTER" --exclude-tags "pty || serial" --concurrency=12 --timeout 60s
  echo "==> flutter test (dev; serial-tagged, --concurrency=1)"
  flutter test -r "$REPORTER" --tags serial --concurrency=1 --timeout 60s
fi