"""Tests for configuration module."""
import pytest
from open_targets_platform_mcp.settings import Settings
class TestSettings:
"""Tests for Settings class."""
def test_settings_default_values(self, clean_env):
"""Test that Settings uses default values when no env vars are set."""
settings = Settings()
assert str(settings.api_endpoint) == "https://api.platform.opentargets.org/api/v4/graphql"
assert settings.server_name == "Model Context Protocol server for Open Targets Platform"
assert settings.http_host == "localhost"
assert settings.http_port == 8000
assert settings.api_call_timeout == 30
assert settings.jq_enabled is False
def test_settings_custom_env_values(self, custom_env):
"""Test that Settings reads from environment variables."""
settings = Settings()
assert str(settings.api_endpoint) == "https://custom.api.test/graphql"
assert settings.server_name == "Test Server"
assert settings.http_host == "0.0.0.0"
assert settings.http_port == 9000
assert settings.api_call_timeout == 60
def test_settings_partial_env_values(self, clean_env, monkeypatch):
"""Test that Settings uses defaults for missing env vars."""
monkeypatch.setenv("OTP_MCP_SERVER_NAME", "Partial Config")
monkeypatch.setenv("OTP_MCP_HTTP_PORT", "3000")
settings = Settings()
# Custom values
assert settings.server_name == "Partial Config"
assert settings.http_port == 3000
# Default values for others
assert str(settings.api_endpoint) == "https://api.platform.opentargets.org/api/v4/graphql"
assert settings.http_host == "localhost"
assert settings.api_call_timeout == 30
def test_settings_port_type_conversion(self, clean_env, monkeypatch):
"""Test that port is converted to int from string env var."""
monkeypatch.setenv("OTP_MCP_HTTP_PORT", "5555")
settings = Settings()
assert isinstance(settings.http_port, int)
assert settings.http_port == 5555
def test_settings_timeout_type_conversion(self, clean_env, monkeypatch):
"""Test that timeout is converted to int from string env var."""
monkeypatch.setenv("OTP_MCP_API_CALL_TIMEOUT", "120")
settings = Settings()
assert isinstance(settings.api_call_timeout, int)
assert settings.api_call_timeout == 120
def test_settings_invalid_port_raises_error(self, clean_env, monkeypatch):
"""Test that invalid port value raises ValueError."""
monkeypatch.setenv("OTP_MCP_HTTP_PORT", "not_a_number")
with pytest.raises(ValueError):
Settings()
def test_settings_invalid_timeout_raises_error(self, clean_env, monkeypatch):
"""Test that invalid timeout value raises ValueError."""
monkeypatch.setenv("OTP_MCP_API_CALL_TIMEOUT", "invalid")
with pytest.raises(ValueError):
Settings()
def test_settings_environment_variable_names(self, clean_env, monkeypatch):
"""Test all environment variable names are correctly read."""
env_vars = {
"OTP_MCP_API_ENDPOINT": "https://test1.api/graphql",
"OTP_MCP_SERVER_NAME": "TestName",
"OTP_MCP_HTTP_HOST": "10.0.0.1",
"OTP_MCP_HTTP_PORT": "7777",
"OTP_MCP_API_CALL_TIMEOUT": "90",
}
for key, value in env_vars.items():
monkeypatch.setenv(key, value)
settings = Settings()
assert str(settings.api_endpoint) == "https://test1.api/graphql"
assert settings.server_name == "TestName"
assert settings.http_host == "10.0.0.1"
assert settings.http_port == 7777
assert settings.api_call_timeout == 90
def test_settings_update_method(self, clean_env):
"""Test that Settings.update() method works."""
settings = Settings()
original_name = settings.server_name
settings.update(server_name="Updated Name")
assert settings.server_name == "Updated Name"
assert settings.server_name != original_name
