#!/usr/bin/env bash set -euo pipefail ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"TEMP_DIR="$(mktemp -d "${TMPDIR:-/tmp}/codexbar-test-sharding.XXXXXX")"trap 'rm -rf "${TEMP_DIR}"' EXIT IFS= read -r -d '' FAKE_SWIFT_SCRIPT <<'EOF' || trueset -euo pipefail printf '%s\n' "$*" >> "${FAKE_SWIFT_LOG}"if [[ "$*" == "test list" ]]; then  if [[ "${FAKE_SWIFT_LIST_FAIL:-0}" == "1" ]]; then    printf 'test-list stdout marker\n'    printf 'test-list stderr marker\n' >&2    exit 42  fi  printf '%s\n' \    "CodexBarTests.Alpha/test_one()" \    "CodexBarTests.Alpha/test_two(argument:)" \    "CodexBarTests.Beta/test_two" \    'CodexBarTests.`top level works`()' \    'CodexBarTests.`top/level slash works`()'  exit 0fiif [[ "$*" == *"|"* ]]; then  group_runs="$(grep -c '|' "${FAKE_SWIFT_LOG}")"  if [[ "${FAKE_SWIFT_GROUP_ALWAYS_FAIL:-0}" == "1" || "${group_runs}" -eq 1 ]]; then    exit 1  fifiEOF export FAKE_SWIFT_LOG="${TEMP_DIR}/swift.log" python3 "${ROOT_DIR}/Scripts/ci_swift_test_by_suite.py" \  --group-size 4 \  --timeout 10 \  --swift-command /bin/bash \  --swift-command-arg=-c \  --swift-command-arg="${FAKE_SWIFT_SCRIPT}" \  --swift-command-arg=fake-swift \  >"${TEMP_DIR}/retry.log"grep -Fq "failed with exit code 1; retrying shard once" "${TEMP_DIR}/retry.log"grep -Fq "CodexBarTests\\.Alpha" "${FAKE_SWIFT_LOG}"grep -Fq "CodexBarTests\\.Beta" "${FAKE_SWIFT_LOG}"grep -Fq "CodexBarTests\\..*top\\ level\\ works" "${FAKE_SWIFT_LOG}"grep -Fq "CodexBarTests\\..*top/level\\ slash\\ works" "${FAKE_SWIFT_LOG}"[[ "$(wc -l < "${FAKE_SWIFT_LOG}")" -eq 3 ]] python3 "${ROOT_DIR}/Scripts/ci_swift_test_by_suite.py" \  --group-size 1 \  --timeout 10 \  --shard-index 0 \  --shard-count 2 \  --list-only \  --swift-command /bin/bash \  --swift-command-arg=-c \  --swift-command-arg="${FAKE_SWIFT_SCRIPT}" \  --swift-command-arg=fake-swift \  >"${TEMP_DIR}/shard-0.log" python3 "${ROOT_DIR}/Scripts/ci_swift_test_by_suite.py" \  --group-size 1 \  --timeout 10 \  --shard-index 1 \  --shard-count 2 \  --list-only \  --swift-command /bin/bash \  --swift-command-arg=-c \  --swift-command-arg="${FAKE_SWIFT_SCRIPT}" \  --swift-command-arg=fake-swift \  >"${TEMP_DIR}/shard-1.log" cat "${TEMP_DIR}/shard-0.log" "${TEMP_DIR}/shard-1.log" \  | grep -v '^Discovered ' \  | sort >"${TEMP_DIR}/shards-combined.log"python3 "${ROOT_DIR}/Scripts/ci_swift_test_by_suite.py" \  --group-size 1 \  --timeout 10 \  --list-only \  --swift-command /bin/bash \  --swift-command-arg=-c \  --swift-command-arg="${FAKE_SWIFT_SCRIPT}" \  --swift-command-arg=fake-swift \  | grep -v '^Discovered ' \  | sort >"${TEMP_DIR}/shards-expected.log"diff -u "${TEMP_DIR}/shards-expected.log" "${TEMP_DIR}/shards-combined.log" if FAKE_SWIFT_GROUP_ALWAYS_FAIL=1 \  python3 "${ROOT_DIR}/Scripts/ci_swift_test_by_suite.py" \    --group-size 4 \    --timeout 10 \    --swift-command /bin/bash \    --swift-command-arg=-c \    --swift-command-arg="${FAKE_SWIFT_SCRIPT}" \    --swift-command-arg=fake-swift \    >"${TEMP_DIR}/failure.log" 2>&1; then  echo "ERROR: Repeated shard failure was masked." >&2  exit 1fi if FAKE_SWIFT_LIST_FAIL=1 \  python3 "${ROOT_DIR}/Scripts/ci_swift_test_by_suite.py" \    --group-size 1 \    --timeout 10 \    --list-only \    --swift-command /bin/bash \    --swift-command-arg=-c \    --swift-command-arg="${FAKE_SWIFT_SCRIPT}" \    --swift-command-arg=fake-swift \    >"${TEMP_DIR}/list-failure.log" 2>&1; then  echo "ERROR: Failed test discovery was masked." >&2  exit 1figrep -Fq "test-list stdout marker" "${TEMP_DIR}/list-failure.log"grep -Fq "test-list stderr marker" "${TEMP_DIR}/list-failure.log" echo "Swift test sharding tests passed."