chore: import upstream snapshot with attribution

tests/tools/test_lambda_errors_tool.py

@@ -0,0 +1,47 @@
+"""Tests for LambdaErrorsTool (function-based, @tool decorated)."""
+
+from __future__ import annotations
+
+from unittest.mock import patch
+
+from integrations.aws_lambda.tools.lambda_errors_tool import get_lambda_errors
+from tests.tools.conftest import BaseToolContract, mock_agent_state
+
+
+class TestLambdaErrorsToolContract(BaseToolContract):
+    def get_tool_under_test(self):
+        return get_lambda_errors.__opensre_registered_tool__
+
+
+def test_is_available_requires_function_name() -> None:
+    rt = get_lambda_errors.__opensre_registered_tool__
+    assert rt.is_available({"lambda": {"function_name": "my-fn"}}) is True
+    assert rt.is_available({"lambda": {}}) is False
+    assert rt.is_available({}) is False
+
+
+def test_extract_params_maps_fields() -> None:
+    rt = get_lambda_errors.__opensre_registered_tool__
+    sources = mock_agent_state()
+    params = rt.extract_params(sources)
+    assert params["function_name"] == "my-lambda-function"
+
+
+def test_run_delegates_to_invocation_logs_with_filter_errors() -> None:
+    fake_data = {
+        "log_group": "/aws/lambda/my-fn",
+        "invocation_count": 1,
+        "invocations": [],
+    }
+    with patch(
+        "integrations.aws_lambda.tools.lambda_invocation_logs_tool.get_recent_invocations",
+        return_value={"success": True, "data": fake_data},
+    ):
+        result = get_lambda_errors(function_name="my-fn", limit=50)
+    # Delegates to get_lambda_invocation_logs(filter_errors=True)
+    assert "found" in result
+
+
+def test_run_returns_error_when_no_function_name() -> None:
+    result = get_lambda_errors(function_name="")
+    assert "error" in result