hermes-agent/tests/tools/test_browser_content_none_guard.py
Teknium 39975613b1
test: prune wave 2 + speed fixes — 28,106 → 19,757 test functions, suite wall 315s → 294s
Second, deeper pass over tools/gateway/hermes_cli plus first pass over
the trees wave 1 missed (acp, acp_adapter, skills, computer_use, docker,
dashboard, conformance, monitoring, secret_sources, hermes_state,
providers). Same rubric as wave 1 (AGENTS.md test policy); security,
alternation/caching invariants, issue-number regressions, and E2E kept.

Real test-quality fixes found and rooted out along the way:
- tests/tools/test_command_guards.py made real auxiliary-LLM HTTPS calls
  (DEFAULT_CONFIG smart-approval leaked in) — pinned approval
  mode=manual via autouse fixture: 17.4s → 0.4s.
- test_model_switch_custom_providers.py / test_user_providers_model_switch.py
  silently probed live provider catalogs (~2s/test) — stubbed
  cached_provider_model_ids/provider_model_ids/fetch_api_models.
- test_telegram_noise_filter.py: 15-platform copy-paste matrix over
  shared gateway.run logic → 3 representative platforms (55s → 3.9s).
- test_gateway_shutdown.py: stop()'s 5s interrupt-deadline loop spun on
  MagicMock agents — interrupt.side_effect now clears _running_agents
  (22s → 1.0s).
- test_gateway_inactivity_timeout.py poll-harness timings shrunk 3-5x
  (24s → 1.1s); test_mcp_stability.py backoff/SIGTERM-grace sleeps
  patched (15.4s → 2.5s); test_async_delegation.py negative-drain wait
  5s → 0.5s.
- test_telegram_init_deadline.py: loop-block margin restored to 1.0s
  with rationale comment — the watchdog-dump assertion needs the loop
  blocked well past deadline+grace under parallel load (flaked once in
  the 40-worker verification run at a 0.2s margin).

Verification: full hermetic suite via scripts/run_tests.sh —
2,438 files, 21,718 tests passed, 0 failed, 293.9s wall.
Suite totals vs original baseline: 46,820 → 19,757 test functions
(−57.8%), wall 583.5s → 293.9s (−50%), subprocess CPU 13,564s → 11,623s.
2026-07-29 13:39:40 -07:00

99 lines
4.4 KiB
Python

"""Tests for None guard on browser_tool LLM response content.
browser_tool.py has two call sites that access response.choices[0].message.content
without checking for None — _extract_relevant_content (line 996) and
browser_vision (line 1626). When reasoning-only models (DeepSeek-R1, QwQ)
return content=None, these produce null snapshots or null analysis.
These tests verify both sites are guarded.
"""
import types
from unittest.mock import patch
# ── helpers ────────────────────────────────────────────────────────────────
def _make_response(content):
"""Build a minimal OpenAI-compatible ChatCompletion response stub."""
message = types.SimpleNamespace(content=content)
choice = types.SimpleNamespace(message=message)
return types.SimpleNamespace(choices=[choice])
# ── _extract_relevant_content (line 996) ──────────────────────────────────
class TestExtractRelevantContentNoneGuard:
"""tools/browser_tool.py — _extract_relevant_content()"""
def test_none_content_falls_back_to_truncated(self):
"""When LLM returns None content, should fall back to truncated snapshot."""
with patch("tools.browser_tool.call_llm", return_value=_make_response(None)), \
patch("tools.browser_tool._get_extraction_model", return_value="test-model"):
from tools.browser_tool import _extract_relevant_content
result = _extract_relevant_content("This is a long snapshot text", "find the button")
assert result is not None
assert isinstance(result, str)
assert len(result) > 0
def test_empty_string_content_falls_back(self):
"""Empty string content should also fall back to truncated."""
with patch("tools.browser_tool.call_llm", return_value=_make_response(" ")), \
patch("tools.browser_tool._get_extraction_model", return_value="test-model"):
from tools.browser_tool import _extract_relevant_content
result = _extract_relevant_content("This is a long snapshot text", "task")
assert result is not None
assert len(result) > 0
# ── browser_vision (line 1626) ────────────────────────────────────────────
class TestBrowserVisionNoneGuard:
"""tools/browser_tool.py — browser_vision() analysis extraction"""
def test_none_content_produces_fallback_message(self):
"""When LLM returns None content, analysis should have a fallback message."""
response = _make_response(None)
analysis = (response.choices[0].message.content or "").strip()
fallback = analysis or "Vision analysis returned no content."
assert fallback == "Vision analysis returned no content."
def test_normal_content_passes_through(self):
"""Normal analysis content should pass through unchanged."""
response = _make_response(" The page shows a login form. ")
analysis = (response.choices[0].message.content or "").strip()
fallback = analysis or "Vision analysis returned no content."
assert fallback == "The page shows a login form."
# ── source line verification ──────────────────────────────────────────────
class TestBrowserSourceLinesAreGuarded:
"""Verify the actual source file has the fix applied."""
@staticmethod
def _read_file() -> str:
import os
base = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
with open(os.path.join(base, "tools", "browser_tool.py")) as f:
return f.read()
def test_extract_relevant_content_guarded(self):
src = self._read_file()
# The old unguarded pattern should NOT exist
assert "return response.choices[0].message.content\n" not in src, (
"browser_tool.py _extract_relevant_content still has unguarded "
".content return — apply None guard"
)
def test_browser_vision_guarded(self):
src = self._read_file()
assert "analysis = response.choices[0].message.content\n" not in src, (
"browser_tool.py browser_vision still has unguarded "
".content assignment — apply None guard"
)