"""Unit tests for configuration management.
Tests Settings validation, defaults, environment variable handling, and caching.
"""
import pytest
from pydantic import ValidationError
from aareguru_mcp.config import Settings, get_settings
class TestSettingsDefaults:
"""Test default settings values."""
def test_default_base_url(self, monkeypatch):
"""Test default base URL."""
monkeypatch.delenv("AAREGURU_BASE_URL", raising=False)
settings = Settings()
assert settings.aareguru_base_url == "https://aareguru.existenz.ch"
def test_default_app_name(self, monkeypatch):
"""Test default app name."""
monkeypatch.delenv("APP_NAME", raising=False)
settings = Settings()
assert settings.app_name == "aareguru-mcp"
def test_default_cache_ttl(self, monkeypatch):
"""Test default cache TTL."""
monkeypatch.delenv("CACHE_TTL_SECONDS", raising=False)
settings = Settings()
assert settings.cache_ttl_seconds == 120
def test_default_request_interval(self, monkeypatch):
"""Test default request interval."""
monkeypatch.delenv("MIN_REQUEST_INTERVAL_SECONDS", raising=False)
settings = Settings()
assert settings.min_request_interval_seconds == 300
def test_default_log_level(self, monkeypatch):
"""Test default log level."""
monkeypatch.delenv("LOG_LEVEL", raising=False)
settings = Settings()
assert settings.log_level == "INFO"
class TestSettingsCustomValues:
"""Test settings with custom values."""
def test_custom_app_name(self):
"""Test custom app name."""
settings = Settings(app_name="custom-app")
assert settings.app_name == "custom-app"
def test_custom_cache_ttl(self):
"""Test custom cache TTL."""
settings = Settings(cache_ttl_seconds=60)
assert settings.cache_ttl_seconds == 60
def test_custom_log_level(self):
"""Test custom log level."""
settings = Settings(log_level="DEBUG")
assert settings.log_level == "DEBUG"
class TestSettingsValidation:
"""Test settings validation."""
def test_valid_port(self):
"""Test valid port value."""
settings = Settings(http_port=8080)
assert settings.http_port == 8080
def test_invalid_port_too_high(self):
"""Test port validation rejects values above 65535."""
with pytest.raises(ValidationError):
Settings(http_port=70000)
def test_invalid_port_too_low(self):
"""Test port validation rejects values below 1."""
with pytest.raises(ValidationError):
Settings(http_port=0)
def test_valid_log_levels(self):
"""Test all valid log levels."""
for level in ["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"]:
settings = Settings(log_level=level)
assert settings.log_level == level
class TestSettingsCaching:
"""Test settings caching."""
def test_get_settings_returns_same_instance(self):
"""Test that get_settings returns cached instance."""
settings1 = get_settings()
settings2 = get_settings()
assert settings1 is settings2
