fastmcp/tests/deprecated/test_deprecated.py
2025-11-01 15:46:21 -04:00

55 lines
2.1 KiB
Python

import warnings
import pytest
from starlette.applications import Starlette
from fastmcp import Client, FastMCP
from fastmcp.utilities.tests import temporary_settings
# reset deprecation warnings for this module
pytestmark = pytest.mark.filterwarnings("default::DeprecationWarning")
class TestDeprecationWarningsSetting:
def test_deprecation_warnings_setting_true(self):
with temporary_settings(deprecation_warnings=True):
with pytest.warns(DeprecationWarning) as recorded_warnings:
# will warn once for providing deprecated arg
mcp = FastMCP(host="1.2.3.4")
# will warn once for accessing deprecated property
mcp.settings
assert len(recorded_warnings) == 2
def test_deprecation_warnings_setting_false(self):
with temporary_settings(deprecation_warnings=False):
# will error if a warning is raised
with warnings.catch_warnings():
warnings.simplefilter("error")
# will warn once for providing deprecated arg
mcp = FastMCP(host="1.2.3.4")
# will warn once for accessing deprecated property
mcp.settings
def test_http_app_with_sse_transport():
"""Test that http_app with SSE transport works (no warning)."""
server = FastMCP("TestServer")
# This should not raise a warning since we're using the new API
with warnings.catch_warnings(record=True) as recorded_warnings:
app = server.http_app(transport="sse")
assert isinstance(app, Starlette)
# Verify no deprecation warnings were raised for using transport parameter
deprecation_warnings = [
w for w in recorded_warnings if issubclass(w.category, DeprecationWarning)
]
assert len(deprecation_warnings) == 0
def test_from_client_deprecation_warning():
"""Test that FastMCP.from_client raises a deprecation warning."""
server = FastMCP("TestServer")
with pytest.warns(DeprecationWarning, match="from_client"):
FastMCP.from_client(Client(server))