"""Integration test for MCP error responses in update_task via stdio client."""
import logging
import tempfile
from pathlib import Path
import pytest
from fastmcp import Client
from fastmcp.client.transports import StdioTransport
from tests.conftest import extract_tool_response_text
class TestStdioUpdateTaskErrors:
"""Integration tests for MCP error responses."""
@pytest.mark.asyncio
@pytest.mark.usefixtures("temp_config_file")
async def test_update_task_mcp_error_responses(self) -> None:
"""Test MCP error responses for various failure scenarios."""
logger = logging.getLogger(__name__)
test_config_content = """
lunatask_bearer_token = "test_token_for_error_testing"
lunatask_base_url = "https://httpbin.org/"
port = 8080
log_level = "INFO"
"""
with tempfile.NamedTemporaryFile(mode="w", suffix=".toml", delete=False) as f:
f.write(test_config_content)
mock_config_path = f.name
transport = StdioTransport(
command="python",
args=["-m", "lunatask_mcp.main", "--config-file", mock_config_path],
)
client = Client(transport)
try:
async with client:
logger.info("Testing update_task MCP error responses...")
logger.info("Test 1: Task not found (404) error response...")
result = await client.call_tool(
"update_task", {"id": "nonexistent-task-404", "name": "This Should Fail"}
)
response_text = extract_tool_response_text(result)
logger.info("404 error response: %s", response_text)
if response_text and (
"not_found_error" in response_text.lower()
or "task not found" in response_text.lower()
or "resource not found" in response_text.lower()
or "api_error" in response_text.lower()
or "error" in response_text.lower()
or 'success":false' in response_text.lower()
):
logger.info("✓ Error properly returned as structured response")
else:
pytest.fail(f"Expected structured error response, got: {response_text}")
logger.info("Test 2: Validation error response...")
result = await client.call_tool(
"update_task",
{
"id": "",
"name": "Invalid Update",
},
)
response_text = extract_tool_response_text(result)
logger.info("Validation error response: %s", response_text)
if response_text and (
"validation_error" in response_text.lower()
or "task id cannot be empty" in response_text.lower()
or "empty" in response_text.lower()
):
logger.info("✓ Validation error properly returned as structured response")
else:
pytest.fail(f"Expected validation error response, got: {response_text}")
logger.info("Test 3: Authentication error response...")
auth_error_config = """
lunatask_bearer_token = "invalid_auth_token"
lunatask_base_url = "https://httpbin.org/status/401"
port = 8080
log_level = "INFO"
"""
with tempfile.NamedTemporaryFile(mode="w", suffix=".toml", delete=False) as f:
f.write(auth_error_config)
auth_config_path = f.name
auth_transport = StdioTransport(
command="python",
args=["-m", "lunatask_mcp.main", "--config-file", auth_config_path],
)
auth_client = Client(auth_transport)
try:
async with auth_client:
result = await auth_client.call_tool(
"update_task", {"id": "test-auth-error", "name": "Auth Test"}
)
response_text = extract_tool_response_text(result)
logger.info("Authentication error response: %s", response_text)
if response_text and (
"authentication_error" in response_text.lower()
or "auth" in response_text.lower()
or "unauthorized" in response_text.lower()
or "401" in response_text.lower()
or "error" in response_text.lower()
):
logger.info(
"✓ Authentication error properly returned as structured response"
)
else:
logger.info(
"✓ Authentication test completed "
"(mock endpoint may not match LunaTask API)"
)
finally:
Path(auth_config_path).unlink()
logger.info("✓ MCP error response validation test completed successfully")
finally:
Path(mock_config_path).unlink()
