git.r.bdr.sh - rbdr/cologne/blob - test/loggers/file.js

   1 'use strict';
   2
   3 const Fs = require('fs');
   4
   5 const Tap = require('tap');
   6
   7 const FileLogger = require('../../lib/loggers/file');
   8
   9 // Prepare the test
  10
  11 const rawFile = './raw.log';
  12 const formatterFile = './formatter.log';
  13 const formatterString = 'example';
  14
  15 const logObjectA = {
  16   _timestamp: Date.now() + .134,
  17   _cologneLog: '1.0.0',
  18   _from: 'Dummy Logger',
  19   _level: 6,
  20   _levelString: 'info',
  21   message: 'MessageOne'
  22 };
  23
  24 const logObjectB = {
  25   _timestamp: Date.now() + .134,
  26   _cologneLog: '1.0.0',
  27   _from: 'Dummy Logger',
  28   _level: 6,
  29   _levelString: 'info',
  30   message: 'MessageTwo'
  31 };
  32
  33 const logs = [logObjectA, logObjectB];
  34
  35
  36 const dummyFormatter = {
  37   values: [],
  38   format: function (logObject) {
  39
  40     this.values.push(logObject);
  41     return formatterString;
  42   }
  43 };
  44
  45 const rawLogger = new FileLogger({
  46   file: rawFile
  47 });
  48 const formatterLogger = new FileLogger({
  49   file: formatterFile,
  50   formatter: dummyFormatter
  51 });
  52
  53 /**
  54  * TEST: #log() - regular
  55  */
  56
  57 rawLogger.log(...logs);
  58
  59 setTimeout(() => {
  60
  61   Tap.test('raw file', (t) => {
  62
  63     Fs.readFile(rawFile, { encoding: 'utf8' }, (_, contents) => {
  64
  65       const lines = contents.trim().split('\n');
  66
  67       Tap.equal(lines.length, logs.length,
  68         'it should send all params to the file');
  69
  70       Tap.equal(JSON.stringify(logObjectA), lines[0],
  71         'it should log the raw json object');
  72
  73       Fs.unlink(rawFile, () => {
  74
  75         t.end();
  76       });
  77     });
  78   });
  79 }, 100); // allow for flush
  80 /**
  81  * TEST: #log() - formatter
  82  */
  83
  84 formatterLogger.log(...logs);
  85
  86 setTimeout(() => {
  87
  88   Tap.test('formatted file', (t) => {
  89
  90     Fs.readFile(formatterFile, { encoding: 'utf8' }, (_, contents) => {
  91
  92       const lines = contents.trim().split('\n');
  93
  94       Tap.equal(lines.length, logs.length,
  95         'it should send all params to the file');
  96
  97       Tap.equal(formatterString, lines[0],
  98         'it should log the formatted object');
  99
 100       Fs.unlink(formatterFile, () => {
 101
 102         t.end();
 103       });
 104     });
 105   });
 106 }, 100);