94 lines
2.7 KiB
JavaScript
94 lines
2.7 KiB
JavaScript
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/* eslint-disable no-sync */
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const assert = require('assert');
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const rimraf = require('rimraf');
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const fs = require('fs');
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const path = require('path');
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const winston = require('../../lib/winston');
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const { MESSAGE } = require('triple-beam');
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//
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// Remove all log fixtures
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//
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function removeFixtures(done) {
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rimraf(path.join(__dirname, '..', 'fixtures', 'logs', 'testtailrollingfiles*'), done);
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}
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let tailrollTransport = null;
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describe('winston/transports/file/tailrolling', function () {
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describe('An instance of the File Transport', function () {
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before(removeFixtures);
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after(removeFixtures);
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it('init logger AFTER cleaning up old files', function () {
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tailrollTransport = new winston.transports.File({
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timestamp: false,
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json: false,
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filename: path.join(__dirname, '..', 'fixtures', 'logs', 'testtailrollingfiles.log'),
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maxsize: 4096,
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maxFiles: 3,
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tailable: true
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})
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.on('open', console.log); // eslint-disable-line no-console
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});
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it('and when passed more files than the maxFiles', function (done) {
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let created = 0;
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let loggedTotal = 0;
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function data(ch, kb) {
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return String.fromCharCode(65 + ch).repeat(kb * 1024 - 1);
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}
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function logKbytes(kbytes, txt) {
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const toLog = {};
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toLog[MESSAGE] = data(txt, kbytes);
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tailrollTransport.log(toLog);
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}
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tailrollTransport.on('logged', function (info) {
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loggedTotal += info[MESSAGE].length + 1;
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if (loggedTotal >= 14 * 1024) { // just over 3 x 4kb files
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return done();
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}
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if (loggedTotal % 4096 === 0) {
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created++;
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}
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// eslint-disable-next-line max-nested-callbacks
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setTimeout(() => logKbytes(1, created), 1);
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});
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logKbytes(1, created);
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});
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it('should be 3 log files, base to maxFiles - 1', function () {
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for (var num = 0; num < 4; num++) {
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const file = !num ? 'testtailrollingfiles.log' : 'testtailrollingfiles' + num + '.log';
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const fullpath = path.join(__dirname, '..', 'fixtures', 'logs', file);
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if (num === 3) {
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return assert.ok(!fs.existsSync(fullpath));
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}
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assert.ok(fs.existsSync(fullpath));
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}
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return false;
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});
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it('should have files in correct order', function () {
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['D', 'C', 'B'].forEach(function (letter, i) {
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const file = !i ? 'testtailrollingfiles.log' : 'testtailrollingfiles' + i + '.log';
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let content = fs.readFileSync(path.join(__dirname, '..', 'fixtures', 'logs', file), 'ascii');
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content = content.replace(/\s+/g, '');
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assert(content.match(new RegExp(letter, 'g'))[0].length, content.length);
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});
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});
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});
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});
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