jakciehan
79 lines
2.4 KiB
TypeScript
79 lines
2.4 KiB
TypeScript
import { Logger, LogLevel } from '@common/Logger';
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describe('Logger — leveled logging', () => {
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let logger: Logger;
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let sink: jest.Mock;
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beforeEach(() => {
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logger = new Logger();
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sink = jest.fn();
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logger.setSink(sink);
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});
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it('suppresses messages below the threshold', () => {
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logger.setLevel(LogLevel.Warn);
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logger.debug('mod', 'hidden');
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logger.info('mod', 'hidden');
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logger.warn('mod', 'shown');
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logger.error('mod', 'shown');
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expect(sink).toHaveBeenCalledTimes(2);
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});
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it('forwards module + message + rest args to the sink', () => {
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logger.setLevel(LogLevel.Debug);
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logger.info('Pool', 'size', 5);
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expect(sink).toHaveBeenCalledWith(LogLevel.Info, 'Pool', 'size', 5);
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});
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it('Silent level disables all output', () => {
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logger.setLevel(LogLevel.Silent);
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logger.error('mod', 'ignored');
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expect(sink).not.toHaveBeenCalled();
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});
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});
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describe('Logger — performance metrics', () => {
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let logger: Logger;
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beforeEach(() => {
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logger = new Logger();
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});
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it('records samples under a metric name', () => {
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for (const v of [10, 20, 30, 40, 50]) {
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logger.metric({ name: 'touch_ms', value: v });
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}
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const agg = logger.aggregate('touch_ms');
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expect(agg).toBeDefined();
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expect(agg!.count).toBe(5);
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expect(agg!.min).toBe(10);
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expect(agg!.max).toBe(50);
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expect(agg!.avg).toBeCloseTo(30);
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expect(agg!.p50).toBe(30);
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expect(agg!.p95).toBe(50);
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});
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it('returns undefined aggregate for unknown metric', () => {
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expect(logger.aggregate('ghost')).toBeUndefined();
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});
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it('timerStart/timerEnd records elapsed time', () => {
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logger.timerStart('frame', 1000);
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const elapsed = logger.timerEnd('frame', 1016);
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expect(elapsed).toBe(16);
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expect(logger.aggregate('frame')!.avg).toBe(16);
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});
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it('timerEnd without start returns undefined', () => {
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expect(logger.timerEnd('never', 100)).toBeUndefined();
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});
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it('resetMetrics clears all samples and running timers', () => {
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logger.metric({ name: 'a', value: 1 });
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logger.timerStart('b', 0);
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logger.resetMetrics();
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expect(logger.aggregate('a')).toBeUndefined();
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expect(logger.timerEnd('b', 10)).toBeUndefined();
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});
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});
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