import { describe, it, expect, beforeEach, afterEach, jest } from '@jest/globals';
// Mock dotenv before importing config
jest.mock('dotenv', () => ({
config: jest.fn(),
}));
describe('Configuration', () => {
let originalEnv: typeof process.env;
beforeEach(() => {
// Save original environment
originalEnv = { ...process.env };
// Clear all environment variables related to our config
delete process.env.V0_API_KEY;
delete process.env.V0_BASE_URL;
delete process.env.V0_DEFAULT_MODEL;
delete process.env.V0_TIMEOUT;
delete process.env.MCP_SERVER_NAME;
delete process.env.MCP_SERVER_VERSION;
delete process.env.LOG_LEVEL;
// Clear module cache to ensure fresh imports
jest.resetModules();
});
afterEach(() => {
// Restore original environment
process.env = originalEnv;
});
describe('config object', () => {
it('should create config with required environment variables', async () => {
// Arrange
process.env.V0_API_KEY = 'test-api-key';
// Act
const { config } = await import('../../../src/config/index.js');
// Assert
expect(config.v0.apiKey).toBe('test-api-key');
expect(config.v0.baseUrl).toBe('https://api.v0.dev/v1');
expect(config.v0.defaultModel).toBe('v0-1.5-md');
expect(config.v0.timeout).toBe(60000);
expect(config.mcp.serverName).toBe('v0-mcp');
expect(config.mcp.version).toBe('1.0.0');
expect(config.logging.level).toBe('info');
});
it('should use custom environment variables when provided', async () => {
// Arrange
process.env.V0_API_KEY = 'custom-api-key';
process.env.V0_BASE_URL = 'https://custom.api.url';
process.env.V0_DEFAULT_MODEL = 'v0-1.0-md';
process.env.V0_TIMEOUT = '30000';
process.env.MCP_SERVER_NAME = 'custom-mcp';
process.env.MCP_SERVER_VERSION = '2.0.0';
process.env.LOG_LEVEL = 'debug';
// Act
const { config } = await import('../../../src/config/index.js');
// Assert
expect(config.v0.apiKey).toBe('custom-api-key');
expect(config.v0.baseUrl).toBe('https://custom.api.url');
expect(config.v0.defaultModel).toBe('v0-1.0-md');
expect(config.v0.timeout).toBe(30000);
expect(config.mcp.serverName).toBe('custom-mcp');
expect(config.mcp.version).toBe('2.0.0');
expect(config.logging.level).toBe('debug');
});
it('should throw error when required environment variable is missing', async () => {
// Arrange - Don't set V0_API_KEY
// Act & Assert
await expect(async () => {
await import('../../../src/config/index.js');
}).rejects.toThrow('Required environment variable V0_API_KEY is not set');
});
});
describe('validateConfig', () => {
it('should validate successfully when all required variables are present', async () => {
// Arrange
process.env.V0_API_KEY = 'test-api-key';
// Mock console.log to capture validation message
const consoleSpy = jest.spyOn(console, 'log').mockImplementation(() => {});
// Act
const { validateConfig } = await import('../../../src/config/index.js');
// Assert - Should not throw
expect(() => validateConfig()).not.toThrow();
expect(consoleSpy).toHaveBeenCalledWith('✅ Configuration validated successfully');
consoleSpy.mockRestore();
});
it('should throw error when V0_API_KEY is missing', async () => {
// Arrange - Don't set V0_API_KEY but import validateConfig separately
process.env.V0_API_KEY = 'temp-key'; // Set temporarily to allow import
const { validateConfig } = await import('../../../src/config/index.js');
delete process.env.V0_API_KEY; // Remove after import
// Act & Assert
expect(() => validateConfig()).toThrow('Missing required environment variables: V0_API_KEY');
});
it('should handle multiple missing required variables', async () => {
// Arrange
process.env.V0_API_KEY = 'temp-key'; // Set temporarily to allow import
const { validateConfig } = await import('../../../src/config/index.js');
// Mock the required variables check by modifying the function behavior
delete process.env.V0_API_KEY;
// Act & Assert
expect(() => validateConfig()).toThrow('Missing required environment variables: V0_API_KEY');
});
});
describe('environment variable parsing', () => {
it('should parse timeout as number', async () => {
// Arrange
process.env.V0_API_KEY = 'test-key';
process.env.V0_TIMEOUT = '45000';
// Act
const { config } = await import('../../../src/config/index.js');
// Assert
expect(config.v0.timeout).toBe(45000);
expect(typeof config.v0.timeout).toBe('number');
});
it('should handle invalid timeout gracefully', async () => {
// Arrange
process.env.V0_API_KEY = 'test-key';
process.env.V0_TIMEOUT = 'invalid-number';
// Act
const { config } = await import('../../../src/config/index.js');
// Assert
expect(config.v0.timeout).toBeNaN();
});
it('should validate model enum values', async () => {
// Arrange
process.env.V0_API_KEY = 'test-key';
process.env.V0_DEFAULT_MODEL = 'v0-1.5-lg';
// Act
const { config } = await import('../../../src/config/index.js');
// Assert
expect(config.v0.defaultModel).toBe('v0-1.5-lg');
});
it('should validate log level enum values', async () => {
// Arrange
process.env.V0_API_KEY = 'test-key';
process.env.LOG_LEVEL = 'warn';
// Act
const { config } = await import('../../../src/config/index.js');
// Assert
expect(config.logging.level).toBe('warn');
});
});
describe('default values', () => {
it('should provide correct default values', async () => {
// Arrange
process.env.V0_API_KEY = 'test-key';
// Act
const { config } = await import('../../../src/config/index.js');
// Assert
expect(config.v0.baseUrl).toBe('https://api.v0.dev/v1');
expect(config.v0.defaultModel).toBe('v0-1.5-md');
expect(config.v0.timeout).toBe(60000);
expect(config.mcp.serverName).toBe('v0-mcp');
expect(config.mcp.version).toBe('1.0.0');
expect(config.logging.level).toBe('info');
});
});
});
