import { ConsoleLogService } from '../../../src/services/consoleLog.service'; const originalConsole = console; let caughtMessage: any; declare var console: any; export function interceptConsole(interceptions: any): object { console = { // tslint:disable-next-line log: function () { interceptions.log = arguments; }, // tslint:disable-next-line warn: function () { interceptions.warn = arguments; }, // tslint:disable-next-line error: function () { interceptions.error = arguments; }, }; return interceptions; } export function restoreConsole() { console = originalConsole; } describe('ConsoleLogService', () => { let logService: ConsoleLogService; beforeEach(() => { caughtMessage = {}; interceptConsole(caughtMessage); logService = new ConsoleLogService(true); }); afterAll(() => { restoreConsole(); }); it('filters messages below the set threshold', () => { logService = new ConsoleLogService(true, level => true); logService.debug('debug'); logService.info('info'); logService.warning('warning'); logService.error('error'); expect(caughtMessage).toEqual({}); }); it('only writes debug messages in dev mode', () => { logService = new ConsoleLogService(false); logService.debug('debug message'); expect(caughtMessage.log).toBeUndefined(); }); it('writes debug/info messages to console.log', () => { logService.debug('this is a debug message'); expect(caughtMessage).toEqual({ log: jasmine.arrayWithExactContents(['this is a debug message']) }); logService.info('this is an info message'); expect(caughtMessage).toEqual({ log: jasmine.arrayWithExactContents(['this is an info message']) }); }); it('writes warning messages to console.warn', () => { logService.warning('this is a warning message'); expect(caughtMessage).toEqual({ warn: jasmine.arrayWithExactContents(['this is a warning message']) }); }); it('writes error messages to console.error', () => { logService.error('this is an error message'); expect(caughtMessage).toEqual({ error: jasmine.arrayWithExactContents(['this is an error message']) }); }); it('times with output to info', async () => { logService.time(); await new Promise(r => setTimeout(r, 250)); const duration = logService.timeEnd(); expect(duration[0]).toBe(0); expect(duration[1]).toBeGreaterThan(0); expect(duration[1]).toBeLessThan(500 * 10e6); expect(caughtMessage).toEqual(jasmine.arrayContaining([])); expect(caughtMessage.log.length).toBe(1); expect(caughtMessage.log[0]).toEqual(jasmine.stringMatching(/^default: \d+\.?\d*ms$/)); }); it('filters time output', async () => { logService = new ConsoleLogService(true, level => true); logService.time(); logService.timeEnd(); expect(caughtMessage).toEqual({}); }); });