fleet-memory/hindsight-api/tests/test_gemini_safety_settings.py
Nicolò Boschi 861295dd7c
refactor: replace set_gemini_safety_settings() with LLMProvider.with_config() (#474)
* refactor: replace set_gemini_safety_settings() with LLMProvider.with_config()

Removes the fragile ContextVar-setter pattern where callers had to remember
to call set_gemini_safety_settings() at every operation entry point.

Instead, LLMProvider.with_config(resolved_config) returns a
ConfiguredLLMProvider wrapper that:
- injects per-bank settings (Gemini safety settings) on every call via
  token-based ContextVar set/reset — properly scoped, no leakage
- proxies all attribute access to the underlying provider via __getattr__
- requires zero changes to LLMInterface or any provider implementations

Call sites (retain, reflect, consolidation) now pass
llm_config.with_config(resolved_config) to sub-components instead of
setting a global context var and hoping nothing else runs in between.
This pattern also composes naturally with a future per-bank provider
factory: callers always receive something with a .call() method.

* fix: pass messages/tools as kwargs in ConfiguredLLMProvider to preserve class-level patch compatibility
2026-03-03 15:00:32 +01:00

340 lines
14 KiB
Python

"""
Tests for Gemini safety settings feature.
Verifies that:
- Safety settings are read from env var and stored on GeminiLLM instances
- Settings are applied to GenerateContentConfig in call() and call_with_tools()
- The context variable override allows per-bank settings at request time
- None (unset) means Gemini's default safety settings are used (no override)
"""
import os
from unittest.mock import AsyncMock, MagicMock, patch
import pytest
pytest.importorskip("google.genai")
SAMPLE_SAFETY_SETTINGS = [
{"category": "HARM_CATEGORY_HARASSMENT", "threshold": "BLOCK_NONE"},
{"category": "HARM_CATEGORY_HATE_SPEECH", "threshold": "BLOCK_NONE"},
{"category": "HARM_CATEGORY_SEXUALLY_EXPLICIT", "threshold": "BLOCK_NONE"},
{"category": "HARM_CATEGORY_DANGEROUS_CONTENT", "threshold": "BLOCK_NONE"},
]
# ─── Config / env var parsing ─────────────────────────────────────────────────
def test_gemini_safety_settings_parsed_from_env():
"""Safety settings JSON from env var is parsed into HindsightConfig."""
import json
from hindsight_api.config import ENV_LLM_GEMINI_SAFETY_SETTINGS, HindsightConfig, clear_config_cache
settings_json = json.dumps(SAMPLE_SAFETY_SETTINGS)
with patch.dict(os.environ, {ENV_LLM_GEMINI_SAFETY_SETTINGS: settings_json}, clear=False):
clear_config_cache()
config = HindsightConfig.from_env()
assert config.llm_gemini_safety_settings == SAMPLE_SAFETY_SETTINGS
clear_config_cache()
def test_gemini_safety_settings_default_is_none():
"""When env var is not set, llm_gemini_safety_settings defaults to None."""
from hindsight_api.config import ENV_LLM_GEMINI_SAFETY_SETTINGS, HindsightConfig, clear_config_cache
env = {k: v for k, v in os.environ.items() if k != ENV_LLM_GEMINI_SAFETY_SETTINGS}
with patch.dict(os.environ, env, clear=True):
clear_config_cache()
config = HindsightConfig.from_env()
assert config.llm_gemini_safety_settings is None
clear_config_cache()
def test_gemini_safety_settings_is_configurable_field():
"""llm_gemini_safety_settings appears in configurable (per-bank) fields."""
from hindsight_api.config import HindsightConfig
assert "llm_gemini_safety_settings" in HindsightConfig.get_configurable_fields()
def test_gemini_safety_settings_not_in_credential_fields():
"""llm_gemini_safety_settings is NOT a credential — it is safe to expose via API."""
from hindsight_api.config import HindsightConfig
assert "llm_gemini_safety_settings" not in HindsightConfig.get_credential_fields()
# ─── GeminiLLM instance ───────────────────────────────────────────────────────
def _make_gemini_provider(safety_settings=None):
"""Return a GeminiLLM instance with a mocked genai.Client."""
with patch("google.genai.Client") as mock_client_cls:
mock_client_cls.return_value = MagicMock()
from hindsight_api.engine.providers.gemini_llm import GeminiLLM
provider = GeminiLLM(
provider="gemini",
api_key="fake-api-key",
base_url="",
model="gemini-2.5-flash",
gemini_safety_settings=safety_settings,
)
# Replace client with a fresh mock so we can inspect calls
provider._client = MagicMock()
return provider
def test_gemini_llm_stores_safety_settings():
"""GeminiLLM stores safety settings passed at construction."""
provider = _make_gemini_provider(safety_settings=SAMPLE_SAFETY_SETTINGS)
assert provider._safety_settings == SAMPLE_SAFETY_SETTINGS
def test_gemini_llm_no_safety_settings_is_none():
"""GeminiLLM._safety_settings is None when not provided."""
provider = _make_gemini_provider(safety_settings=None)
assert provider._safety_settings is None
# ─── call() applies safety settings ──────────────────────────────────────────
@pytest.mark.asyncio
async def test_call_applies_safety_settings():
"""call() includes safety_settings in GenerateContentConfig when configured."""
from google.genai import types as genai_types
provider = _make_gemini_provider(safety_settings=SAMPLE_SAFETY_SETTINGS)
# Build a fake successful response
fake_response = MagicMock()
fake_response.text = "hello"
fake_response.candidates = [MagicMock(finish_reason="STOP")]
fake_response.usage_metadata = MagicMock(prompt_token_count=5, candidates_token_count=2)
provider._client.aio.models.generate_content = AsyncMock(return_value=fake_response)
await provider.call(
messages=[{"role": "user", "content": "hi"}],
scope="test",
)
# Inspect the config passed to generate_content
call_args = provider._client.aio.models.generate_content.call_args
config_arg = call_args.kwargs.get("config") or call_args.args[0] if call_args.args else None
# config may be in kwargs or positional; grab from kwargs
config_arg = call_args.kwargs.get("config")
assert config_arg is not None, "GenerateContentConfig should have been passed"
assert hasattr(config_arg, "safety_settings"), "Config should have safety_settings"
assert config_arg.safety_settings is not None
categories = [s.category.value if hasattr(s.category, "value") else str(s.category) for s in config_arg.safety_settings]
assert "HARM_CATEGORY_HARASSMENT" in categories
assert "HARM_CATEGORY_HATE_SPEECH" in categories
assert "HARM_CATEGORY_SEXUALLY_EXPLICIT" in categories
assert "HARM_CATEGORY_DANGEROUS_CONTENT" in categories
thresholds = [s.threshold.value if hasattr(s.threshold, "value") else str(s.threshold) for s in config_arg.safety_settings]
assert all(t == "BLOCK_NONE" for t in thresholds)
@pytest.mark.asyncio
async def test_call_no_safety_settings_omits_key():
"""call() does NOT add safety_settings to GenerateContentConfig when none configured."""
provider = _make_gemini_provider(safety_settings=None)
fake_response = MagicMock()
fake_response.text = "hello"
fake_response.candidates = [MagicMock(finish_reason="STOP")]
fake_response.usage_metadata = MagicMock(prompt_token_count=5, candidates_token_count=2)
provider._client.aio.models.generate_content = AsyncMock(return_value=fake_response)
await provider.call(
messages=[{"role": "user", "content": "hi"}],
scope="test",
)
call_args = provider._client.aio.models.generate_content.call_args
config_arg = call_args.kwargs.get("config")
# When no safety settings, config is either None or lacks safety_settings
if config_arg is not None:
assert not hasattr(config_arg, "safety_settings") or config_arg.safety_settings is None
# ─── call_with_tools() applies safety settings ────────────────────────────────
@pytest.mark.asyncio
async def test_call_with_tools_applies_safety_settings():
"""call_with_tools() includes safety_settings in GenerateContentConfig."""
provider = _make_gemini_provider(safety_settings=SAMPLE_SAFETY_SETTINGS)
# Build a fake tool-use response (no tool calls, just text)
fake_part = MagicMock()
fake_part.text = "answer"
fake_part.function_call = None
fake_candidate = MagicMock()
fake_candidate.content = MagicMock(parts=[fake_part])
fake_response = MagicMock()
fake_response.candidates = [fake_candidate]
fake_response.usage_metadata = MagicMock(prompt_token_count=5, candidates_token_count=3)
provider._client.aio.models.generate_content = AsyncMock(return_value=fake_response)
tools = [
{
"type": "function",
"function": {
"name": "test_tool",
"description": "A test tool",
"parameters": {"type": "object", "properties": {}, "required": []},
},
}
]
await provider.call_with_tools(
messages=[{"role": "user", "content": "hi"}],
tools=tools,
scope="test",
)
call_args = provider._client.aio.models.generate_content.call_args
config_arg = call_args.kwargs.get("config")
assert config_arg is not None
assert config_arg.safety_settings is not None
categories = [s.category.value if hasattr(s.category, "value") else str(s.category) for s in config_arg.safety_settings]
assert "HARM_CATEGORY_HARASSMENT" in categories
# ─── with_config() override ───────────────────────────────────────────────────
def _make_llm_provider(safety_settings=None):
"""Return an LLMProvider (wrapping GeminiLLM) with a mocked genai.Client."""
with patch("google.genai.Client") as mock_client_cls:
mock_client_cls.return_value = MagicMock()
from hindsight_api.engine.llm_wrapper import LLMProvider
provider = LLMProvider(
provider="gemini",
api_key="fake-api-key",
base_url="",
model="gemini-2.5-flash",
gemini_safety_settings=safety_settings,
)
# Replace the underlying Gemini client with a fresh mock
provider._provider_impl._client = MagicMock()
return provider
def _fake_response():
r = MagicMock()
r.text = "hello"
r.candidates = [MagicMock(finish_reason="STOP")]
r.usage_metadata = MagicMock(prompt_token_count=5, candidates_token_count=2)
return r
def _make_config(safety_settings):
"""Return a minimal config-like object with llm_gemini_safety_settings."""
cfg = MagicMock()
cfg.llm_gemini_safety_settings = safety_settings
return cfg
@pytest.mark.asyncio
async def test_with_config_overrides_instance_settings():
"""with_config() settings take precedence over the provider instance defaults."""
instance_settings = [{"category": "HARM_CATEGORY_HARASSMENT", "threshold": "BLOCK_ONLY_HIGH"}]
override_settings = [{"category": "HARM_CATEGORY_HATE_SPEECH", "threshold": "BLOCK_NONE"}]
provider = _make_llm_provider(safety_settings=instance_settings)
provider._provider_impl._client.aio.models.generate_content = AsyncMock(return_value=_fake_response())
configured = provider.with_config(_make_config(override_settings))
await configured.call(messages=[{"role": "user", "content": "hi"}], scope="test")
config_arg = provider._provider_impl._client.aio.models.generate_content.call_args.kwargs.get("config")
assert config_arg is not None
categories = [s.category.value if hasattr(s.category, "value") else str(s.category) for s in config_arg.safety_settings]
# Should use override_settings (HATE_SPEECH), not instance_settings (HARASSMENT)
assert "HARM_CATEGORY_HATE_SPEECH" in categories
assert "HARM_CATEGORY_HARASSMENT" not in categories
@pytest.mark.asyncio
async def test_with_config_none_falls_back_to_instance():
"""When with_config() supplies None, the instance default is used."""
instance_settings = [{"category": "HARM_CATEGORY_HARASSMENT", "threshold": "BLOCK_NONE"}]
provider = _make_llm_provider(safety_settings=instance_settings)
provider._provider_impl._client.aio.models.generate_content = AsyncMock(return_value=_fake_response())
configured = provider.with_config(_make_config(None))
await configured.call(messages=[{"role": "user", "content": "hi"}], scope="test")
config_arg = provider._provider_impl._client.aio.models.generate_content.call_args.kwargs.get("config")
assert config_arg is not None
categories = [s.category.value if hasattr(s.category, "value") else str(s.category) for s in config_arg.safety_settings]
assert "HARM_CATEGORY_HARASSMENT" in categories
@pytest.mark.asyncio
async def test_with_config_resets_after_call():
"""The ContextVar is properly reset after a with_config() call (no leakage)."""
from hindsight_api.engine.providers.gemini_llm import _safety_settings_ctx
settings = [{"category": "HARM_CATEGORY_HARASSMENT", "threshold": "BLOCK_NONE"}]
provider = _make_llm_provider(safety_settings=None)
provider._provider_impl._client.aio.models.generate_content = AsyncMock(return_value=_fake_response())
before = _safety_settings_ctx.get()
configured = provider.with_config(_make_config(settings))
await configured.call(messages=[{"role": "user", "content": "hi"}], scope="test")
after = _safety_settings_ctx.get()
assert after == before # ContextVar restored to its original value
# ─── LLMProvider reads safety settings from config ────────────────────────────
def test_llm_provider_reads_safety_settings_from_config():
"""LLMProvider reads llm_gemini_safety_settings from global config for Gemini provider."""
import json
from hindsight_api.config import ENV_LLM_GEMINI_SAFETY_SETTINGS, clear_config_cache
settings_json = json.dumps(SAMPLE_SAFETY_SETTINGS)
env_overrides = {
"HINDSIGHT_API_LLM_PROVIDER": "gemini",
"HINDSIGHT_API_LLM_API_KEY": "fake-key",
ENV_LLM_GEMINI_SAFETY_SETTINGS: settings_json,
}
with patch.dict(os.environ, env_overrides, clear=False):
clear_config_cache()
with patch("google.genai.Client") as mock_client_cls:
mock_client_cls.return_value = MagicMock()
from hindsight_api.engine.llm_wrapper import LLMProvider
provider = LLMProvider(
provider="gemini",
api_key="fake-key",
base_url="",
model="gemini-2.5-flash",
)
assert provider.gemini_safety_settings == SAMPLE_SAFETY_SETTINGS
clear_config_cache()