Fix Finnhub API error handling and add coverage

Extracted the API request logic in `finnhub_news.py` to a private `_fetch_company_news_data` helper to properly catch `Exception` and return an empty list without violating the `str` return type of the main `get_company_news` function. Explicitly allows `ThirdPartyTimeoutError` to propagate to preserve timeout behavior.

Added corresponding tests to mock generic API exceptions and invalid response types. Retained the test verifying fallback behavior for invalid numeric values within `get_insider_transactions`.

Co-authored-by: aguzererler <6199053+aguzererler@users.noreply.github.com>

tests/unit/test_finnhub_integration.py

@@ -756,6 +756,32 @@ class TestGetBasicFinancials:
 
 
 # ---------------------------------------------------------------------------
+
+# ---------------------------------------------------------------------------
+# 10.5 finnhub_news — _fetch_company_news_data helper
+# ---------------------------------------------------------------------------
+
+class TestFetchCompanyNewsData:
+    """_fetch_company_news_data handles errors by returning an empty list."""
+
+    _PATCH_TARGET = "tradingagents.dataflows.finnhub_news._make_api_request"
+
+    def test_fetch_company_news_data_api_error_returns_empty_list(self):
+        from tradingagents.dataflows.finnhub_news import _fetch_company_news_data
+
+        with patch(self._PATCH_TARGET, side_effect=Exception("API failure")):
+            result = _fetch_company_news_data("AAPL", {"symbol": "AAPL"})
+
+        assert result == []
+
+    def test_fetch_company_news_data_invalid_response_type_returns_empty_list(self):
+        from tradingagents.dataflows.finnhub_news import _fetch_company_news_data
+
+        with patch(self._PATCH_TARGET, return_value={"error": "Not a list"}):
+            result = _fetch_company_news_data("AAPL", {"symbol": "AAPL"})
+
+        assert result == []
+
 # 10. finnhub_news — get_company_news
 # ---------------------------------------------------------------------------
 
@@ -892,6 +918,30 @@ class TestGetInsiderTransactions:
 
         assert "AAPL" in result
 
+    def test_invalid_transaction_values_fall_back_to_raw_strings(self):
+        """Testing the error path at line 220 where float conversion fails."""
+        from tradingagents.dataflows.finnhub_news import get_insider_transactions
+
+        invalid_txn = {
+            "data": [
+                {
+                    "name": "Test Exec",
+                    "transactionCode": "P",
+                    "share": "invalid_share",
+                    "price": "invalid_price",
+                    "value": "invalid_value",
+                    "transactionDate": "2024-01-10",
+                    "filingDate": "2024-01-12",
+                }
+            ]
+        }
+        with patch(self._PATCH_TARGET, return_value=_json_response(invalid_txn)):
+            result = get_insider_transactions("AAPL")
+
+        assert "invalid_share" in result
+        assert "invalid_price" in result
+        assert "invalid_value" in result
+
 
 # ---------------------------------------------------------------------------
 # 13. finnhub_scanner — get_market_movers_finnhub

tradingagents/dataflows/finnhub_news.py

@@ -5,16 +5,21 @@ transaction data using the Finnhub REST API.  Output formats mirror the
 Alpha Vantage news equivalents for consistent agent-facing data.
 """
 
+import logging
 from datetime import datetime
 from typing import Literal
 
 from .finnhub_common import (
+
     FinnhubError,
+    ThirdPartyTimeoutError,
     _make_api_request,
     _now_str,
     _to_unix_timestamp,
 )
 
+logger = logging.getLogger(__name__)
+
 # ---------------------------------------------------------------------------
 # Type aliases
 # ---------------------------------------------------------------------------
@@ -49,6 +54,21 @@ def _format_unix_ts(ts: int | None) -> str:
 # ---------------------------------------------------------------------------
 
 
+def _fetch_company_news_data(symbol: str, params: dict) -> list[dict]:
+    """Helper to fetch company news and handle errors by returning an empty list."""
+    try:
+        response = _make_api_request("company-news", params)
+    except ThirdPartyTimeoutError:
+        raise
+    except Exception as e:
+        logger.error(f"Error fetching company news for {symbol}: {e}")
+        return []
+
+    if not isinstance(response, list):
+        return []
+
+    return response
+
 def get_company_news(symbol: str, start_date: str, end_date: str) -> str:
     """Fetch company-specific news via Finnhub /company-news.
 
@@ -73,7 +93,7 @@ def get_company_news(symbol: str, start_date: str, end_date: str) -> str:
         "to": end_date,
     }
 
-    articles: list[dict] = _make_api_request("company-news", params)
+    articles: list[dict] = _fetch_company_news_data(symbol, params)
 
     header = (
         f"# Company News: {symbol} ({start_date} to {end_date}) — Finnhub\n"