"""Tests for configuration."""
import pytest
from chuk_mcp_time.config import TimeServerConfig, load_config
def test_config_defaults() -> None:
"""Test configuration default values."""
config = TimeServerConfig()
assert len(config.ntp_servers) == 7
assert "time.google.com" in config.ntp_servers
assert "time.cloudflare.com" in config.ntp_servers
assert config.ntp_timeout == 2.0
assert config.max_outlier_deviation_ms == 5000.0
assert config.min_sources == 3
assert config.max_disagreement_ms == 250.0
assert config.fast_mode_server_count == 4
def test_config_from_env(monkeypatch: pytest.MonkeyPatch) -> None:
"""Test configuration from environment variables."""
monkeypatch.setenv("TIME_SERVER_NTP_TIMEOUT", "5.0")
monkeypatch.setenv("TIME_SERVER_MIN_SOURCES", "5")
monkeypatch.setenv("TIME_SERVER_FAST_MODE_SERVER_COUNT", "3")
config = TimeServerConfig()
assert config.ntp_timeout == 5.0
assert config.min_sources == 5
assert config.fast_mode_server_count == 3
def test_config_validation() -> None:
"""Test configuration validation."""
from pydantic import ValidationError
# Valid config
config = TimeServerConfig(
ntp_timeout=3.0,
min_sources=2,
max_outlier_deviation_ms=1000.0,
)
assert config.ntp_timeout == 3.0
# Invalid values should raise validation error
with pytest.raises(ValidationError):
TimeServerConfig(ntp_timeout=0.1) # Below minimum
with pytest.raises(ValidationError):
TimeServerConfig(ntp_timeout=20.0) # Above maximum
with pytest.raises(ValidationError):
TimeServerConfig(min_sources=0) # Below minimum
def test_load_config() -> None:
"""Test load_config function."""
config = load_config()
assert isinstance(config, TimeServerConfig)
assert len(config.ntp_servers) > 0
def test_get_config() -> None:
"""Test get_config function (singleton pattern)."""
from chuk_mcp_time.config import get_config
# First call
config1 = get_config()
assert isinstance(config1, TimeServerConfig)
# Second call should return same instance
config2 = get_config()
assert config1 is config2 # Same object reference
