import { jest } from '@jest/globals';
import { Logger, LogLevel } from '../utils/logger.js';
describe('Logger', () => {
let consoleSpy: jest.SpiedFunction<typeof console.log>;
beforeEach(() => {
consoleSpy = jest.spyOn(console, 'log').mockImplementation(() => {});
});
afterEach(() => {
consoleSpy.mockRestore();
});
describe('constructor', () => {
it('should create logger with prefix and default level', () => {
const logger = new Logger('TestPrefix');
expect(logger).toBeInstanceOf(Logger);
});
it('should create logger with custom level', () => {
const logger = new Logger('TestPrefix', LogLevel.DEBUG);
expect(logger).toBeInstanceOf(Logger);
});
});
describe('log level filtering', () => {
it('should not log messages below the configured level', () => {
// Set environment variable for logging
const originalEnv = process.env.LOGGING;
process.env.LOGGING = 'true';
const logger = new Logger('Test', LogLevel.WARN);
logger.debug('debug message');
logger.info('info message');
expect(consoleSpy).not.toHaveBeenCalled();
process.env.LOGGING = originalEnv;
});
it('should respect log level hierarchy', () => {
// This test verifies the Logger respects log levels
// Note: Actual console output depends on LOGGING env var set at module load time
const logger = new Logger('Test', LogLevel.DEBUG);
// All methods should be callable without throwing
expect(() => {
logger.debug('debug');
logger.info('info');
logger.warn('warn');
logger.error('error');
}).not.toThrow();
});
});
describe('isLoggingEnabled', () => {
it('should return a boolean value', () => {
const logger = new Logger('Test');
expect(typeof logger.isLoggingEnabled()).toBe('boolean');
});
});
describe('isLoggingFileEnabled', () => {
it('should return a boolean value', () => {
const logger = new Logger('Test');
expect(typeof logger.isLoggingFileEnabled()).toBe('boolean');
});
});
describe('logging methods', () => {
it('should have debug method', () => {
const logger = new Logger('Test');
expect(typeof logger.debug).toBe('function');
});
it('should have info method', () => {
const logger = new Logger('Test');
expect(typeof logger.info).toBe('function');
});
it('should have warn method', () => {
const logger = new Logger('Test');
expect(typeof logger.warn).toBe('function');
});
it('should have error method', () => {
const logger = new Logger('Test');
expect(typeof logger.error).toBe('function');
});
});
});
describe('LogLevel', () => {
it('should have correct numeric values for ordering', () => {
expect(LogLevel.DEBUG).toBe(0);
expect(LogLevel.INFO).toBe(1);
expect(LogLevel.WARN).toBe(2);
expect(LogLevel.ERROR).toBe(3);
});
it('should allow level comparison', () => {
expect(LogLevel.DEBUG < LogLevel.INFO).toBe(true);
expect(LogLevel.INFO < LogLevel.WARN).toBe(true);
expect(LogLevel.WARN < LogLevel.ERROR).toBe(true);
});
});
