hermes-agent/tests/test_plugin_utils.py
Teknium 6b81590c55
test: prune low-value tests suite-wide (wave 1) — 46,820 → 28,106 test functions
Systematic prune per AGENTS.md test policy, one pass over every major
test tree (gateway, hermes_cli, tools, agent, run_agent, plugins, cli,
cron, tui_gateway, honcho/openviking, root-level):

- DELETE: source-reading tests (read_text/getsource on prod files),
  change-detector tests (exact catalog counts, model-name snapshots,
  config version literals), mock-echo tests (assert a mock returns what
  it was told), assertion-free/trivial tests, near-duplicate
  parametrizations (boundaries + one representative kept), async/sync
  twin duplicates, cosmetic within-file variations.
- KEEP (mandatory): security/redaction/approval guards, message-role
  alternation invariants, prompt-caching/deterministic-call-id
  invariants, issue-number regression tests (deduped), E2E tests.
- 6 test files deleted outright (script-style/no-assert or fully
  redundant); conftest.py, fakes/, fixtures/ untouched.
- tests/acp/conftest.py added: autouse fixture stubs the live
  models.dev/GitHub/Copilot/Anthropic inventory fetches that ACP server
  tests performed on every session create — test_server.py 147s → 3.4s,
  and the tests are now genuinely hermetic.
- Sleep-based slowness shrunk where safe (codex_ttfb_watchdog,
  compression_concurrent_fork, etc.); no wall-clock assertion tightened.

Verification: full hermetic suite via scripts/run_tests.sh —
2439 files, 31,130 tests passed, 0 failed, 0 flaky retries, 315s wall
(baseline: 583s wall, 13,564s subprocess CPU).
2026-07-29 13:10:23 -07:00

139 lines
3.4 KiB
Python

"""Tests for plugins/plugin_utils.py — thread-safe lazy singleton helpers.
These exercise the actual concurrency guarantee with real threads (not mocks):
a barrier releases N threads simultaneously into the accessor, and we assert
the factory ran exactly once.
"""
import threading
import pytest
from plugins.plugin_utils import SingletonSlot, lazy_singleton
# --- lazy_singleton -------------------------------------------------------
def test_lazy_singleton_builds_once_and_returns_same_instance():
calls = []
@lazy_singleton
def get():
calls.append(1)
return object()
a = get()
b = get()
assert a is b
assert len(calls) == 1
def test_lazy_singleton_reset_rebuilds():
counter = {"n": 0}
@lazy_singleton
def get():
counter["n"] += 1
return counter["n"]
assert get() == 1
assert get() == 1
get.reset()
assert get() == 2
def test_lazy_singleton_concurrent_first_call_builds_once():
build_count = {"n": 0}
build_lock = threading.Lock()
barrier = threading.Barrier(16)
results = []
results_lock = threading.Lock()
@lazy_singleton
def get():
# Count builds under a lock so the assertion is exact even if the
# double-checked lock had a bug and let two through.
with build_lock:
build_count["n"] += 1
# Simulate an expensive build so threads genuinely overlap.
import time
time.sleep(0.01)
return object()
def worker():
barrier.wait() # release all threads at once
obj = get()
with results_lock:
results.append(obj)
threads = [threading.Thread(target=worker) for _ in range(16)]
for t in threads:
t.start()
for t in threads:
t.join()
assert build_count["n"] == 1, "factory must run exactly once under race"
assert len(results) == 16
assert all(r is results[0] for r in results), "all callers share one instance"
# --- SingletonSlot --------------------------------------------------------
def test_slot_caches_first_value():
slot: SingletonSlot = SingletonSlot()
assert slot.peek() is None
v1 = slot.get(lambda: "first")
assert slot.peek() == "first"
# Subsequent factory is ignored — first value wins.
v2 = slot.get(lambda: "second")
assert v1 == v2 == "first"
def test_slot_factory_exception_not_cached():
slot: SingletonSlot = SingletonSlot()
def boom():
raise ValueError("nope")
with pytest.raises(ValueError):
slot.get(boom)
assert slot.peek() is None
assert slot.get(lambda: "recovered") == "recovered"
def test_slot_concurrent_first_call_builds_once():
build_count = {"n": 0}
build_lock = threading.Lock()
barrier = threading.Barrier(16)
slot: SingletonSlot = SingletonSlot()
results = []
results_lock = threading.Lock()
def factory():
with build_lock:
build_count["n"] += 1
import time
time.sleep(0.01)
return object()
def worker():
barrier.wait()
obj = slot.get(factory)
with results_lock:
results.append(obj)
threads = [threading.Thread(target=worker) for _ in range(16)]
for t in threads:
t.start()
for t in threads:
t.join()
assert build_count["n"] == 1
assert len(results) == 16
assert all(r is results[0] for r in results)