// src/lib/logger.test.ts
import logger from './logger';
describe('Logger', () => {
let consoleLogSpy: jest.SpyInstance;
beforeEach(() => {
consoleLogSpy = jest.spyOn(console, 'log').mockImplementation();
});
afterEach(() => {
consoleLogSpy.mockRestore();
});
it('should log info messages', () => {
const result = logger.info('Test message');
expect(result.level).toBe('info');
expect(result.message).toBe('Test message');
expect(result.ts_iso).toBeDefined();
expect(consoleLogSpy).toHaveBeenCalled();
});
it('should log error messages', () => {
const result = logger.error('Error message');
expect(result.level).toBe('error');
expect(result.message).toBe('Error message');
});
it('should redact sensitive information', () => {
const result = logger.info('Login attempt', {
username: 'user',
password: 'secret123',
token: 'abc123'
});
const logOutput = JSON.parse(consoleLogSpy.mock.calls[0][0]);
expect(logOutput.meta.username).toBe('user');
expect(logOutput.meta.password).toBe('[REDACTED]');
expect(logOutput.meta.token).toBe('[REDACTED]');
});
it('should include metadata when provided', () => {
const result = logger.info('Test', { count: 5, status: 'ok' });
expect(result.meta).toBeDefined();
expect(result.meta?.count).toBe(5);
expect(result.meta?.status).toBe('ok');
});
it('should handle nested objects for redaction', () => {
const result = logger.info('Nested test', {
user: {
name: 'John',
api_key: 'secret'
}
});
const logOutput = JSON.parse(consoleLogSpy.mock.calls[0][0]);
expect(logOutput.meta.user.name).toBe('John');
expect(logOutput.meta.user.api_key).toBe('[REDACTED]');
});
});
