hermes-agent/tests/tools/test_web_providers_ddgs.py
kshitijk4poor 6b219f5af6 refactor(web): remove legacy in-tree provider modules
Deletes tools/web_providers/{brave_free,ddgs,searxng}.py — the three
providers that moved to plugins/web/ in prior commits. tools/web_tools.py
no longer imports them (registry dispatch as of d8735963f), so removing
them is purely a cleanup pass.

Also migrates the existing tests to the new import paths:
  tests/tools/test_web_providers_brave_free.py
  tests/tools/test_web_providers_ddgs.py
  tests/tools/test_web_providers_searxng.py

Mechanical rewrites:
  - `from tools.web_providers.X import YSearchProvider`
      -> `from plugins.web.X.provider import YWebSearchProvider`
  - `.is_configured()` -> `.is_available()`        (legacy method  -> new method)
  - `.provider_name()` -> `.name`                  (legacy method  -> new property)
  - `from tools.web_providers.base import WebSearchProvider`
      -> `from agent.web_search_provider import WebSearchProvider`
      (the subclass-check asserts membership in the new plugin-facing ABC)
  - `sys.modules.delitem("tools.web_providers.ddgs")` updated to point at
    `plugins.web.ddgs.provider` (cache-busting for lazy ddgs imports)

The TestXBackendWiring / TestXSearchOnlyErrors classes (covering
_is_backend_available, _get_backend, check_web_api_key, and the
"search-only" error paths in web_extract/web_crawl) are untouched —
those still test web_tools.py's backend-selection logic, which continues
to recognize the names "brave-free" / "ddgs" / "searxng" even after the
modules behind them moved to plugins.

tools/web_providers/base.py is intentionally NOT deleted by this commit
— it's the parent ABC of the legacy modules and shares its name with
agent/web_search_provider.py::WebSearchProvider. Removing it surfaces the
naming collision (see PR description Finding 0); the real migration PR
deletes it in the same commit that drops the _WEB_PLUGIN_SKIPLIST
guards in hermes_cli/tools_config.py.

Test results:
  bash scripts/run_tests.sh tests/tools/test_web_providers_*.py
  -> 65 passed in 3.41s (all rewritten unit tests + unchanged integration tests)
  bash scripts/run_tests.sh tests/tools/test_web_*.py
  -> 141 passed in 4.70s (full web test set, post-deletion)
2026-05-13 22:31:28 -07:00

246 lines
11 KiB
Python

"""Tests for the DuckDuckGo (ddgs) web search provider.
Covers:
- DDGSWebSearchProvider.is_available() — reflects package importability
- DDGSWebSearchProvider.search() — happy path, missing package, runtime error
- Result normalization (title, url, description, position)
- _is_backend_available("ddgs") / _get_backend() integration
- web_extract / web_crawl return search-only errors when ddgs is active
"""
from __future__ import annotations
import json
import sys
import types
from unittest.mock import MagicMock
def _install_fake_ddgs(monkeypatch, *, text_results=None, text_raises=None):
"""Install a stub ``ddgs`` module in sys.modules for the duration of a test.
``text_results``: iterable of dicts to yield from DDGS().text(...).
``text_raises``: if set, DDGS().text raises this exception instead.
"""
fake = types.ModuleType("ddgs")
class _FakeDDGS:
def __enter__(self):
return self
def __exit__(self, *_a):
return False
def text(self, query, max_results=5):
if text_raises is not None:
raise text_raises
for hit in (text_results or []):
yield hit
fake.DDGS = _FakeDDGS
monkeypatch.setitem(sys.modules, "ddgs", fake)
return fake
# ---------------------------------------------------------------------------
# DDGSWebSearchProvider unit tests
# ---------------------------------------------------------------------------
class TestDDGSProviderIsConfigured:
def test_configured_when_package_importable(self, monkeypatch):
_install_fake_ddgs(monkeypatch)
# Drop any cached ``plugins.web.ddgs.provider`` so is_configured re-imports ddgs fresh
monkeypatch.delitem(sys.modules, "plugins.web.ddgs.provider", raising=False)
from plugins.web.ddgs.provider import DDGSWebSearchProvider
assert DDGSWebSearchProvider().is_available() is True
def test_not_configured_when_package_missing(self, monkeypatch):
monkeypatch.delitem(sys.modules, "ddgs", raising=False)
monkeypatch.delitem(sys.modules, "plugins.web.ddgs.provider", raising=False)
# Block the import so ``import ddgs`` raises ImportError even if the package is actually installed
import builtins
orig_import = builtins.__import__
def blocked_import(name, *args, **kwargs):
if name == "ddgs":
raise ImportError("blocked for test")
return orig_import(name, *args, **kwargs)
monkeypatch.setattr(builtins, "__import__", blocked_import)
from plugins.web.ddgs.provider import DDGSWebSearchProvider
assert DDGSWebSearchProvider().is_available() is False
def test_provider_name(self):
from plugins.web.ddgs.provider import DDGSWebSearchProvider
assert DDGSWebSearchProvider().name == "ddgs"
def test_implements_web_search_provider(self):
from agent.web_search_provider import WebSearchProvider
from plugins.web.ddgs.provider import DDGSWebSearchProvider
assert issubclass(DDGSWebSearchProvider, WebSearchProvider)
class TestDDGSProviderSearch:
def test_happy_path_normalizes_results(self, monkeypatch):
_install_fake_ddgs(monkeypatch, text_results=[
{"title": "A", "href": "https://a.example.com", "body": "desc A"},
{"title": "B", "href": "https://b.example.com", "body": "desc B"},
{"title": "C", "href": "https://c.example.com", "body": "desc C"},
])
from plugins.web.ddgs.provider import DDGSWebSearchProvider
result = DDGSWebSearchProvider().search("q", limit=5)
assert result["success"] is True
web = result["data"]["web"]
assert len(web) == 3
assert web[0] == {"title": "A", "url": "https://a.example.com", "description": "desc A", "position": 1}
assert web[2]["position"] == 3
def test_accepts_url_key_as_fallback_for_href(self, monkeypatch):
_install_fake_ddgs(monkeypatch, text_results=[
{"title": "A", "url": "https://a.example.com", "body": "desc A"},
])
from plugins.web.ddgs.provider import DDGSWebSearchProvider
result = DDGSWebSearchProvider().search("q", limit=5)
assert result["success"] is True
assert result["data"]["web"][0]["url"] == "https://a.example.com"
def test_limit_is_respected(self, monkeypatch):
_install_fake_ddgs(monkeypatch, text_results=[
{"title": f"R{i}", "href": f"https://r{i}.example.com", "body": ""}
for i in range(10)
])
from plugins.web.ddgs.provider import DDGSWebSearchProvider
result = DDGSWebSearchProvider().search("q", limit=3)
assert result["success"] is True
assert len(result["data"]["web"]) == 3
def test_missing_package_returns_failure(self, monkeypatch):
monkeypatch.delitem(sys.modules, "ddgs", raising=False)
monkeypatch.delitem(sys.modules, "plugins.web.ddgs.provider", raising=False)
import builtins
orig_import = builtins.__import__
def blocked_import(name, *args, **kwargs):
if name == "ddgs":
raise ImportError("blocked for test")
return orig_import(name, *args, **kwargs)
monkeypatch.setattr(builtins, "__import__", blocked_import)
from plugins.web.ddgs.provider import DDGSWebSearchProvider
result = DDGSWebSearchProvider().search("q", limit=5)
assert result["success"] is False
assert "ddgs" in result["error"].lower()
def test_runtime_error_returns_failure(self, monkeypatch):
_install_fake_ddgs(monkeypatch, text_raises=RuntimeError("rate limited 202"))
from plugins.web.ddgs.provider import DDGSWebSearchProvider
result = DDGSWebSearchProvider().search("q", limit=5)
assert result["success"] is False
assert "rate limited" in result["error"] or "failed" in result["error"].lower()
def test_empty_results(self, monkeypatch):
_install_fake_ddgs(monkeypatch, text_results=[])
from plugins.web.ddgs.provider import DDGSWebSearchProvider
result = DDGSWebSearchProvider().search("nothing", limit=5)
assert result["success"] is True
assert result["data"]["web"] == []
# ---------------------------------------------------------------------------
# Integration: _is_backend_available / _get_backend / check_web_api_key
# ---------------------------------------------------------------------------
class TestDDGSBackendWiring:
def test_is_backend_available_true_when_package_importable(self, monkeypatch):
from tools import web_tools
monkeypatch.setattr(web_tools, "_ddgs_package_importable", lambda: True)
assert web_tools._is_backend_available("ddgs") is True
def test_is_backend_available_false_when_package_missing(self, monkeypatch):
from tools import web_tools
monkeypatch.setattr(web_tools, "_ddgs_package_importable", lambda: False)
assert web_tools._is_backend_available("ddgs") is False
def test_configured_backend_accepted(self, monkeypatch):
from tools import web_tools
monkeypatch.setattr(web_tools, "_load_web_config", lambda: {"backend": "ddgs"})
monkeypatch.setattr(web_tools, "_ddgs_package_importable", lambda: True)
assert web_tools._get_backend() == "ddgs"
def test_ddgs_trails_paid_providers_in_auto_detect(self, monkeypatch):
"""Exa (priority) should win over ddgs in auto-detect."""
from tools import web_tools
monkeypatch.setattr(web_tools, "_load_web_config", lambda: {})
for key in ("FIRECRAWL_API_KEY", "FIRECRAWL_API_URL", "PARALLEL_API_KEY",
"TAVILY_API_KEY", "SEARXNG_URL", "BRAVE_SEARCH_API_KEY"):
monkeypatch.delenv(key, raising=False)
monkeypatch.setenv("EXA_API_KEY", "exa-key")
monkeypatch.setattr(web_tools, "_is_tool_gateway_ready", lambda: False)
monkeypatch.setattr(web_tools, "_ddgs_package_importable", lambda: True)
assert web_tools._get_backend() == "exa"
def test_auto_detect_picks_ddgs_as_last_resort(self, monkeypatch):
from tools import web_tools
monkeypatch.setattr(web_tools, "_load_web_config", lambda: {})
for key in ("FIRECRAWL_API_KEY", "FIRECRAWL_API_URL", "PARALLEL_API_KEY",
"TAVILY_API_KEY", "EXA_API_KEY", "SEARXNG_URL", "BRAVE_SEARCH_API_KEY"):
monkeypatch.delenv(key, raising=False)
monkeypatch.setattr(web_tools, "_is_tool_gateway_ready", lambda: False)
monkeypatch.setattr(web_tools, "_ddgs_package_importable", lambda: True)
assert web_tools._get_backend() == "ddgs"
def test_check_web_api_key_true_when_ddgs_configured(self, monkeypatch):
from tools import web_tools
monkeypatch.setattr(web_tools, "_load_web_config", lambda: {"backend": "ddgs"})
monkeypatch.setattr(web_tools, "_ddgs_package_importable", lambda: True)
assert web_tools.check_web_api_key() is True
# ---------------------------------------------------------------------------
# ddgs is search-only: web_extract / web_crawl return clear errors
# ---------------------------------------------------------------------------
class TestDDGSSearchOnlyErrors:
def test_web_extract_returns_search_only_error(self, monkeypatch):
import asyncio
from tools import web_tools
monkeypatch.setattr(web_tools, "_load_web_config", lambda: {"backend": "ddgs"})
monkeypatch.setattr(web_tools, "_ddgs_package_importable", lambda: True)
monkeypatch.setattr(web_tools, "_is_tool_gateway_ready", lambda: False)
monkeypatch.setattr("tools.interrupt.is_interrupted", lambda: False, raising=False)
result_str = asyncio.get_event_loop().run_until_complete(
web_tools.web_extract_tool(["https://example.com"])
)
result = json.loads(result_str)
assert result["success"] is False
assert "search-only" in result["error"].lower()
assert "duckduckgo" in result["error"].lower() or "ddgs" in result["error"].lower()
def test_web_crawl_returns_search_only_error(self, monkeypatch):
import asyncio
from tools import web_tools
monkeypatch.setattr(web_tools, "_load_web_config", lambda: {"backend": "ddgs"})
monkeypatch.setattr(web_tools, "_ddgs_package_importable", lambda: True)
monkeypatch.setattr(web_tools, "_is_tool_gateway_ready", lambda: False)
monkeypatch.setattr(web_tools, "check_firecrawl_api_key", lambda: False)
monkeypatch.setattr("tools.interrupt.is_interrupted", lambda: False, raising=False)
result_str = asyncio.get_event_loop().run_until_complete(
web_tools.web_crawl_tool("https://example.com")
)
result = json.loads(result_str)
assert result["success"] is False
assert "search-only" in result["error"].lower()
assert "duckduckgo" in result["error"].lower() or "ddgs" in result["error"].lower()