File size: 8,884 Bytes
1dbc34b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 | import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
import { createLogger, LogLevel, getLogLevel, setLogLevel, setColorsEnabled } from '../src/logger';
describe('logger.ts', () => {
let originalConsoleError: typeof console.error;
let originalConsoleWarn: typeof console.warn;
let originalConsoleLog: typeof console.log;
let originalLogLevel: LogLevel;
beforeEach(() => {
// Save original console methods and log level
originalConsoleError = console.error;
originalConsoleWarn = console.warn;
originalConsoleLog = console.log;
originalLogLevel = getLogLevel();
// Disable colors for predictable test output
setColorsEnabled(false);
// Mock console methods
console.error = vi.fn();
console.warn = vi.fn();
console.log = vi.fn();
});
afterEach(() => {
// Restore original console methods and log level
console.error = originalConsoleError;
console.warn = originalConsoleWarn;
console.log = originalConsoleLog;
setLogLevel(originalLogLevel);
});
describe('createLogger', () => {
it('should create logger with context prefix', () => {
const logger = createLogger('TestContext');
setLogLevel(LogLevel.INFO);
logger.info('test message');
expect(console.log).toHaveBeenCalledWith('INFO [TestContext]', 'test message');
});
it('should handle multiple arguments', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.INFO);
logger.info('message', { data: 123 }, [1, 2, 3]);
expect(console.log).toHaveBeenCalledWith('INFO [Test]', 'message', { data: 123 }, [1, 2, 3]);
});
});
describe('Log levels', () => {
it('should log error at ERROR level', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.ERROR);
logger.error('error message');
logger.warn('warn message');
logger.info('info message');
logger.debug('debug message');
expect(console.error).toHaveBeenCalledTimes(1);
expect(console.warn).not.toHaveBeenCalled();
expect(console.log).not.toHaveBeenCalled();
});
it('should log error and warn at WARN level', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.WARN);
logger.error('error message');
logger.warn('warn message');
logger.info('info message');
logger.debug('debug message');
expect(console.error).toHaveBeenCalledTimes(1);
// Note: warn uses console.log in Node.js implementation
expect(console.log).toHaveBeenCalledTimes(1);
});
it('should log error, warn, and info at INFO level', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.INFO);
logger.error('error message');
logger.warn('warn message');
logger.info('info message');
logger.debug('debug message');
expect(console.error).toHaveBeenCalledTimes(1);
// Note: warn and info both use console.log in Node.js implementation
expect(console.log).toHaveBeenCalledTimes(2); // warn + info, not debug
});
it('should log all messages at DEBUG level', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.DEBUG);
logger.error('error message');
logger.warn('warn message');
logger.info('info message');
logger.debug('debug message');
expect(console.error).toHaveBeenCalledTimes(1);
// Note: warn, info, debug all use console.log in Node.js implementation
expect(console.log).toHaveBeenCalledTimes(3); // warn + info + debug
});
});
describe('error method', () => {
it('should use console.error', () => {
const logger = createLogger('ErrorTest');
setLogLevel(LogLevel.ERROR);
logger.error('error occurred', { code: 500 });
expect(console.error).toHaveBeenCalledWith('ERROR [ErrorTest]', 'error occurred', {
code: 500,
});
});
it('should not log when level is below ERROR', () => {
const logger = createLogger('Test');
setLogLevel((LogLevel.ERROR - 1) as LogLevel);
logger.error('should not appear');
expect(console.error).not.toHaveBeenCalled();
});
});
describe('warn method', () => {
it('should use console.log with WARN prefix', () => {
const logger = createLogger('WarnTest');
setLogLevel(LogLevel.WARN);
logger.warn('warning message');
// Note: warn uses console.log in Node.js implementation
expect(console.log).toHaveBeenCalledWith('WARN [WarnTest]', 'warning message');
});
it('should not log when level is below WARN', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.ERROR);
logger.warn('should not appear');
expect(console.log).not.toHaveBeenCalled();
});
});
describe('info method', () => {
it('should use console.log', () => {
const logger = createLogger('InfoTest');
setLogLevel(LogLevel.INFO);
logger.info('info message');
expect(console.log).toHaveBeenCalledWith('INFO [InfoTest]', 'info message');
});
it('should not log when level is below INFO', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.WARN);
logger.info('should not appear');
expect(console.log).not.toHaveBeenCalled();
});
});
describe('debug method', () => {
it('should use console.log with DEBUG prefix', () => {
const logger = createLogger('DebugTest');
setLogLevel(LogLevel.DEBUG);
logger.debug('debug details', { trace: '...' });
expect(console.log).toHaveBeenCalledWith('DEBUG [DebugTest]', 'debug details', {
trace: '...',
});
});
it('should not log when level is below DEBUG', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.INFO);
logger.debug('should not appear');
expect(console.log).not.toHaveBeenCalled();
});
});
describe('getLogLevel', () => {
it('should return current log level', () => {
setLogLevel(LogLevel.DEBUG);
expect(getLogLevel()).toBe(LogLevel.DEBUG);
setLogLevel(LogLevel.ERROR);
expect(getLogLevel()).toBe(LogLevel.ERROR);
});
});
describe('setLogLevel', () => {
it('should change log level', () => {
setLogLevel(LogLevel.WARN);
expect(getLogLevel()).toBe(LogLevel.WARN);
setLogLevel(LogLevel.DEBUG);
expect(getLogLevel()).toBe(LogLevel.DEBUG);
});
it('should affect subsequent logging', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.ERROR);
logger.info('should not log');
expect(console.log).not.toHaveBeenCalled();
setLogLevel(LogLevel.INFO);
logger.info('should log');
expect(console.log).toHaveBeenCalledWith('INFO [Test]', 'should log');
});
});
describe('Multiple logger instances', () => {
it('should maintain separate contexts', () => {
const logger1 = createLogger('Service1');
const logger2 = createLogger('Service2');
setLogLevel(LogLevel.INFO);
logger1.info('from service 1');
logger2.info('from service 2');
expect(console.log).toHaveBeenNthCalledWith(1, 'INFO [Service1]', 'from service 1');
expect(console.log).toHaveBeenNthCalledWith(2, 'INFO [Service2]', 'from service 2');
});
it('should share log level setting', () => {
const logger1 = createLogger('Service1');
const logger2 = createLogger('Service2');
setLogLevel(LogLevel.ERROR);
logger1.info('should not log');
logger2.info('should not log');
expect(console.log).not.toHaveBeenCalled();
});
});
describe('Edge cases', () => {
it('should handle empty context string', () => {
const logger = createLogger('');
setLogLevel(LogLevel.INFO);
logger.info('message');
expect(console.log).toHaveBeenCalledWith('INFO []', 'message');
});
it('should handle context with special characters', () => {
const logger = createLogger('Test-Service_v2.0');
setLogLevel(LogLevel.INFO);
logger.info('message');
expect(console.log).toHaveBeenCalledWith('INFO [Test-Service_v2.0]', 'message');
});
it('should handle no arguments to log methods', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.INFO);
logger.info();
expect(console.log).toHaveBeenCalledWith('INFO [Test]');
});
it('should handle complex object arguments', () => {
const logger = createLogger('Test');
setLogLevel(LogLevel.INFO);
const complexObj = {
nested: { deep: { value: 123 } },
array: [1, 2, 3],
fn: () => {},
};
logger.info('complex', complexObj);
expect(console.log).toHaveBeenCalledWith('INFO [Test]', 'complex', complexObj);
});
});
});
|