Files
litellm/tests/test_litellm/a2a_protocol/test_card_resolver.py
T
Ishaan JaffandGitHub 3ef475b70e [Fix] A2a Gateway - Allow supporting old A2a card formats (#19949)
* fix: LiteLLMA2ACardResolver

* fix: LiteLLMA2ACardResolver

* feat: .well-known/agent.json

* test_card_resolver_fallback_from_new_to_old_path
2026-01-28 15:02:08 -08:00

70 lines
2.3 KiB
Python

"""
Mock tests for LiteLLMA2ACardResolver.
Tests that the card resolver tries both old and new well-known paths.
"""
import sys
from unittest.mock import AsyncMock, MagicMock, patch
import pytest
@pytest.mark.asyncio
async def test_card_resolver_fallback_from_new_to_old_path():
"""
Test that the card resolver tries the new path (/.well-known/agent-card.json) first,
and falls back to the old path (/.well-known/agent.json) if the new path fails.
"""
# Mock the AgentCard
mock_agent_card = MagicMock()
mock_agent_card.name = "Test Agent"
mock_agent_card.description = "A test agent"
# Track which paths were called
paths_called = []
# Create a mock base class
class MockA2ACardResolver:
def __init__(self, base_url):
self.base_url = base_url
async def get_agent_card(self, relative_card_path=None, http_kwargs=None):
paths_called.append(relative_card_path)
if relative_card_path == "/.well-known/agent-card.json":
# First call (new path) fails
raise Exception("404 Not Found")
else:
# Second call (old path) succeeds
return mock_agent_card
# Create mock A2A module
mock_a2a_module = MagicMock()
mock_a2a_client = MagicMock()
mock_a2a_constants = MagicMock()
mock_a2a_constants.AGENT_CARD_WELL_KNOWN_PATH = "/.well-known/agent-card.json"
mock_a2a_constants.PREV_AGENT_CARD_WELL_KNOWN_PATH = "/.well-known/agent.json"
with patch.dict(
sys.modules,
{
"a2a": mock_a2a_module,
"a2a.client": MagicMock(A2ACardResolver=MockA2ACardResolver),
"a2a.utils.constants": mock_a2a_constants,
},
):
# Import after patching
from litellm.a2a_protocol.card_resolver import LiteLLMA2ACardResolver
resolver = LiteLLMA2ACardResolver(base_url="http://test-agent:8000")
result = await resolver.get_agent_card()
# Verify both paths were tried in correct order
assert len(paths_called) == 2
assert paths_called[0] == "/.well-known/agent-card.json" # New path tried first
assert paths_called[1] == "/.well-known/agent.json" # Old path tried second
# Verify the result
assert result == mock_agent_card
assert result.name == "Test Agent"