"""Tests for configuration management."""
import os
import tempfile
from pathlib import Path
import pytest
from weather_mcp.config import load_config, Config
def test_load_default_config():
"""Test loading configuration with defaults."""
config = Config()
assert config.server.mode == "stdio"
assert config.server.http.host == "0.0.0.0"
assert config.server.http.port == 8080
assert config.weather_api.provider == "openweathermap"
assert config.weather_api.units == "metric"
assert config.logging.level == "INFO"
def test_load_config_from_yaml():
"""Test loading configuration from YAML file."""
yaml_content = """
server:
mode: http
http:
host: 127.0.0.1
port: 9090
weather_api:
api_key: test_key_123
units: imperial
logging:
level: DEBUG
"""
with tempfile.NamedTemporaryFile(mode='w', suffix='.yaml', delete=False) as f:
f.write(yaml_content)
temp_path = f.name
try:
config = load_config(temp_path)
assert config.server.mode == "http"
assert config.server.http.host == "127.0.0.1"
assert config.server.http.port == 9090
assert config.weather_api.api_key == "test_key_123"
assert config.weather_api.units == "imperial"
assert config.logging.level == "DEBUG"
finally:
os.unlink(temp_path)
def test_env_var_substitution():
"""Test environment variable substitution in config."""
yaml_content = """
weather_api:
api_key: ${TEST_API_KEY}
"""
# Set environment variable
os.environ['TEST_API_KEY'] = 'env_test_key'
with tempfile.NamedTemporaryFile(mode='w', suffix='.yaml', delete=False) as f:
f.write(yaml_content)
temp_path = f.name
try:
config = load_config(temp_path)
assert config.weather_api.api_key == 'env_test_key'
finally:
os.unlink(temp_path)
del os.environ['TEST_API_KEY']
def test_env_var_override():
"""Test that environment variables override config file."""
yaml_content = """
weather_api:
api_key: file_key
"""
os.environ['WEATHER_API_KEY'] = 'env_override_key'
with tempfile.NamedTemporaryFile(mode='w', suffix='.yaml', delete=False) as f:
f.write(yaml_content)
temp_path = f.name
try:
config = load_config(temp_path)
# Environment variable should override file value
assert config.weather_api.api_key == 'env_override_key'
finally:
os.unlink(temp_path)
del os.environ['WEATHER_API_KEY']
def test_invalid_server_mode():
"""Test that invalid server mode raises validation error."""
with pytest.raises(Exception): # Pydantic validation error
Config(server={"mode": "invalid_mode"})
def test_invalid_units():
"""Test that invalid units raise validation error."""
with pytest.raises(Exception): # Pydantic validation error
Config(weather_api={"units": "invalid_units"})
