Files
steipete--codexbar/Scripts/ci_swift_test_by_suite.py
2026-07-13 12:22:33 +08:00

342 lines
13 KiB
Python
Executable File

#!/usr/bin/env python3
"""Run SwiftPM tests in suite shards so CI cannot hang inside one aggregate run."""
from __future__ import annotations
import argparse
import os
import re
import signal
import subprocess
import sys
import time
from collections.abc import Iterable
from dataclasses import dataclass
@dataclass(frozen=True)
class TestSelection:
name: str
filter_pattern: str
suite_name: str | None = None
@dataclass
class RunStats:
discovered_selections: int = 0
selected_selections: int = 0
selected_groups: int = 0
group_size: int = 0
shard_index: int | None = None
shard_count: int | None = None
discovery_seconds: float = 0
execution_seconds: float = 0
total_seconds: float = 0
first_pass_successful_groups: int = 0
first_pass_failed_groups: int = 0
full_group_retries: int = 0
timed_out_groups: int = 0
recovered_groups: int = 0
isolated_selection_retries: int = 0
def summary_rows(self) -> list[tuple[str, str]]:
shard = "none"
if self.shard_index is not None and self.shard_count is not None:
shard = f"{self.shard_index + 1}/{self.shard_count}"
return [
("Shard", shard),
("Group size", str(self.group_size)),
("Discovered selections", str(self.discovered_selections)),
("Selected selections", str(self.selected_selections)),
("Selected groups", str(self.selected_groups)),
("First-pass successful groups", str(self.first_pass_successful_groups)),
("First-pass failed groups", str(self.first_pass_failed_groups)),
("Full-group retries", str(self.full_group_retries)),
("Recovered groups", str(self.recovered_groups)),
("Timed out groups", str(self.timed_out_groups)),
("Isolated selection retries", str(self.isolated_selection_retries)),
("Discovery seconds", f"{self.discovery_seconds:.1f}"),
("Execution seconds", f"{self.execution_seconds:.1f}"),
("Total seconds", f"{self.total_seconds:.1f}"),
]
def parse_args() -> argparse.Namespace:
parser = argparse.ArgumentParser()
parser.add_argument("--group-size", type=int, default=12)
parser.add_argument("--timeout", type=int, default=180)
parser.add_argument("--limit-groups", type=int)
parser.add_argument("--shard-index", type=int)
parser.add_argument("--shard-count", type=int)
parser.add_argument(
"--no-retry-non-timeout-failures",
action="store_false",
dest="retry_non_timeout_failures",
help="fail immediately when a group exits without timing out",
)
parser.add_argument("--list-only", action="store_true")
parser.add_argument("--swift-command", default="swift")
parser.add_argument("--swift-command-arg", action="append", default=[])
return parser.parse_args()
def run_command(command: list[str], timeout: int | None = None) -> int:
print(f"+ {' '.join(command)}", flush=True)
process = subprocess.Popen(command, start_new_session=True)
try:
return process.wait(timeout=timeout)
except subprocess.TimeoutExpired:
print(f"::warning::Command timed out after {timeout}s: {' '.join(command)}", flush=True)
os.killpg(process.pid, signal.SIGTERM)
try:
process.wait(timeout=10)
except subprocess.TimeoutExpired:
os.killpg(process.pid, signal.SIGKILL)
process.wait()
return 124
def swift_test_list(swift_command: list[str]) -> list[TestSelection]:
command = [*swift_command, "test", "list"]
try:
result = subprocess.run(command, check=True, capture_output=True, text=True)
except subprocess.CalledProcessError as error:
print(f"+ {swift_command[0]} test list", flush=True)
if error.stdout:
print(error.stdout, end="" if error.stdout.endswith("\n") else "\n", flush=True)
if error.stderr:
print(error.stderr, end="" if error.stderr.endswith("\n") else "\n", file=sys.stderr, flush=True)
raise
selections: set[TestSelection] = set()
unknown: list[str] = []
for line in result.stdout.splitlines():
top_level = re.fullmatch(r"(?P<module>[^.]+)\.(?:`(?P<display>.+)`|(?P<function>[^()/]+))\(\)", line)
if top_level is not None:
module = top_level.group("module")
test_name = top_level.group("display") or top_level.group("function")
selections.add(
TestSelection(
name=line,
# SwiftPM matches top-level Swift Testing functions by their display name,
# not the backtick-wrapped identifier printed by `swift test list`.
filter_pattern=rf"{re.escape(module)}\..*{re.escape(test_name)}",
)
)
continue
if "/" in line:
suite = line.split("/", 1)[0]
if "." in suite:
selections.add(
TestSelection(
name=suite,
filter_pattern=rf"^{re.escape(suite)}/",
suite_name=suite,
)
)
continue
unknown.append(line)
if unknown:
rendered = "\n".join(f"- {line}" for line in unknown)
raise RuntimeError(f"Unrecognized `swift test list` output:\n{rendered}")
return sorted(selections, key=lambda selection: selection.name)
def append_github_summary(stats: RunStats) -> None:
summary_path = os.environ.get("GITHUB_STEP_SUMMARY")
if not summary_path:
return
with open(summary_path, "a", encoding="utf-8") as summary:
summary.write("### macOS Swift test timing\n\n")
summary.write("| Field | Value |\n")
summary.write("| --- | --- |\n")
for field, value in stats.summary_rows():
safe_value = value.replace("|", "\\|")
summary.write(f"| {field} | `{safe_value}` |\n")
summary.write("\n")
def print_timing_summary(stats: RunStats) -> None:
print("Swift test timing summary:", flush=True)
for field, value in stats.summary_rows():
print(f"- {field}: {value}", flush=True)
def chunks(items: list[TestSelection], size: int) -> Iterable[list[TestSelection]]:
for index in range(0, len(items), size):
yield items[index : index + size]
def shard_groups(groups: list[list[TestSelection]], shard_index: int | None, shard_count: int | None) -> list[list[TestSelection]]:
if shard_index is None and shard_count is None:
return groups
if shard_index is None or shard_count is None:
raise ValueError("--shard-index and --shard-count must be passed together")
if shard_count < 1:
raise ValueError("--shard-count must be positive")
if shard_index < 0 or shard_index >= shard_count:
raise ValueError("--shard-index must be in the range [0, --shard-count)")
return [group for index, group in enumerate(groups) if index % shard_count == shard_index]
def prioritized_suites(suites: list[TestSelection]) -> list[TestSelection]:
priority = ["CodexBarTests.CLIEntryTests"]
ordered = [suite for name in priority for suite in suites if suite.suite_name == name]
ordered.extend(suite for suite in suites if suite.suite_name not in priority)
return ordered
def filtered_suites_for_environment(suites: list[TestSelection]) -> list[TestSelection]:
if os.environ.get("GITHUB_ACTIONS") != "true" or sys.platform != "darwin":
return suites
# SwiftPM hangs before suite output for this executable-target suite on the Intel macOS runner.
# Linux CI still runs it in the full Swift test lane, and local macOS runs it directly.
skipped = {"CodexBarTests.CLIEntryTests"}
filtered = [suite for suite in suites if suite.suite_name not in skipped]
if len(filtered) != len(suites):
print(f"Skipping macOS CI-only suites: {', '.join(sorted(skipped))}", flush=True)
return filtered
def filter_for(suites: list[TestSelection]) -> str:
return rf"({'|'.join(suite.filter_pattern for suite in suites)})"
def run_group(suites: list[TestSelection], timeout: int, swift_command: list[str]) -> int:
return run_command(
[*swift_command, "test", "--skip-build", "--no-parallel", "--filter", filter_for(suites)],
timeout=timeout,
)
def retry_selections_individually(
suites: list[TestSelection],
timeout: int,
swift_command: list[str],
stats: RunStats,
) -> int:
for suite in suites:
stats.isolated_selection_retries += 1
print(f"::group::Swift test retry {suite.name}", flush=True)
retry_result = run_group([suite], timeout, swift_command)
print("::endgroup::", flush=True)
if retry_result != 0:
return retry_result
return 0
def main() -> int:
total_started = time.monotonic()
args = parse_args()
stats = RunStats(
group_size=args.group_size,
shard_index=args.shard_index,
shard_count=args.shard_count,
)
if args.group_size < 1:
print("--group-size must be positive", file=sys.stderr)
return 2
swift_command = [args.swift_command, *args.swift_command_arg]
result = 0
try:
discovery_started = time.monotonic()
try:
suites = prioritized_suites(filtered_suites_for_environment(swift_test_list(swift_command)))
finally:
stats.discovery_seconds = time.monotonic() - discovery_started
stats.discovered_selections = len(suites)
suite_groups = list(chunks(suites, args.group_size))
try:
suite_groups = shard_groups(suite_groups, args.shard_index, args.shard_count)
except ValueError as error:
print(str(error), file=sys.stderr)
result = 2
return result
if args.limit_groups is not None:
suite_groups = suite_groups[: args.limit_groups]
stats.selected_selections = sum(len(group) for group in suite_groups)
stats.selected_groups = len(suite_groups)
shard_suffix = ""
if args.shard_index is not None and args.shard_count is not None:
shard_suffix = f" in shard {args.shard_index + 1}/{args.shard_count}"
print(
f"Discovered {len(suites)} test selections; running {stats.selected_selections} selections "
f"in {len(suite_groups)} groups{shard_suffix}",
flush=True,
)
if args.list_only:
for group in suite_groups:
for suite in group:
print(suite.name)
return 0
if not suite_groups:
print("No test groups selected.", flush=True)
return 0
execution_started = time.monotonic()
for group_index, group in enumerate(suite_groups, start=1):
print(
f"::group::Swift test group {group_index}/{len(suite_groups)} "
f"({len(group)} selections)",
flush=True,
)
group_result = run_group(group, args.timeout, swift_command)
print("::endgroup::", flush=True)
if group_result == 0:
stats.first_pass_successful_groups += 1
continue
stats.first_pass_failed_groups += 1
group_timed_out = group_result == 124
if group_timed_out:
stats.timed_out_groups += 1
if len(group) == 1:
result = group_result
return result
if group_result != 124:
if not args.retry_non_timeout_failures:
result = group_result
return result
stats.full_group_retries += 1
print(f"Group {group_index} failed with exit code {group_result}; retrying group once", flush=True)
retry_result = run_group(group, args.timeout, swift_command)
if retry_result == 0:
stats.recovered_groups += 1
continue
if retry_result != 124:
result = retry_result
return result
group_timed_out = True
stats.timed_out_groups += 1
print(f"Group {group_index} timed out; retrying selections one at a time", flush=True)
retry_result = retry_selections_individually(group, args.timeout, swift_command, stats)
if retry_result != 0:
result = retry_result
return result
if group_timed_out:
stats.recovered_groups += 1
return result
finally:
stats.total_seconds = time.monotonic() - total_started
if "execution_started" in locals():
stats.execution_seconds = time.monotonic() - execution_started
if not args.list_only:
print_timing_summary(stats)
append_github_summary(stats)
if __name__ == "__main__":
raise SystemExit(main())