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

   1 'use strict';
   2
   3 const Tap = require('tap');
   4
   5 const { Cologne } = require('..');
   6
   7 // Utility Functions
   8
   9 const createDummyLogger = function () {
  10
  11   return {
  12     values: null,
  13     log(...logs) {
  14
  15       this.values = [];
  16
  17       for (const log of logs) {
  18         this.values.push(log);
  19       }
  20     }
  21   };
  22 };
  23
  24 const levelChecker = function (level) {
  25
  26   return (count, log) => (log._level === level ? ++count : count);
  27 };
  28
  29
  30 // Prepare the test
  31
  32 Tap.plan(19);
  33
  34 const dummyLoggerA = createDummyLogger();
  35 const dummyLoggerB = createDummyLogger();
  36 const dummyLoggerC = createDummyLogger();
  37
  38 const co = new Cologne({
  39   loggers: [
  40     dummyLoggerA,
  41     dummyLoggerB
  42   ]
  43 });
  44
  45 const logs = ['example1', null, undefined, 1, { example: true }];
  46
  47 /**
  48  * TEST: #log()
  49  */
  50 co.log(...logs);
  51
  52 // Calculate values
  53 const valueCheck = dummyLoggerA.values.reduce((count, log) => (typeof log._cologneLog === 'string' ? ++count : count), 0);
  54 let levelCheck = dummyLoggerA.values.reduce(levelChecker(6), 0);
  55
  56 // Now check the values
  57
  58 Tap.equal(dummyLoggerA.values.length, logs.length,
  59   '#log() should send every argument to the loggers');
  60
  61 Tap.similar(dummyLoggerA.values, dummyLoggerB.values,
  62   '#log() should send the same arguments to all the loggers');
  63
  64 Tap.equal(valueCheck, logs.length,
  65   '#log() should send all objects in cologne log format');
  66
  67 Tap.equal(levelCheck, logs.length,
  68   '#log() should default to level 6');
  69
  70 /**
  71  * TEST: #debug()
  72  */
  73 co.debug(...logs);
  74 levelCheck = dummyLoggerA.values.reduce(levelChecker(7), 0);
  75
  76 Tap.equal(levelCheck, logs.length,
  77   '#debug() should set to level 7');
  78
  79 /**
  80  * TEST: #info()
  81  */
  82 co.info(...logs);
  83 levelCheck = dummyLoggerA.values.reduce(levelChecker(6), 0);
  84
  85 Tap.equal(levelCheck, logs.length,
  86   '#info() should set to level 6');
  87
  88 /**
  89  * TEST: #notice()
  90  */
  91 co.notice(...logs);
  92 levelCheck = dummyLoggerA.values.reduce(levelChecker(5), 0);
  93
  94 Tap.equal(levelCheck, logs.length,
  95   '#notice() should set to level 5');
  96
  97 /**
  98  * TEST: #warn()
  99  */
 100 co.warn(...logs);
 101 levelCheck = dummyLoggerA.values.reduce(levelChecker(4), 0);
 102
 103 Tap.equal(levelCheck, logs.length,
 104   '#warn() should set to level 4');
 105
 106 /**
 107  * TEST: #error()
 108  */
 109 co.error(...logs);
 110 levelCheck = dummyLoggerA.values.reduce(levelChecker(3), 0);
 111
 112 Tap.equal(levelCheck, logs.length,
 113   '#error() should set to level 3');
 114
 115 /**
 116  * TEST: #buildLog()
 117  */
 118 let builtLog = co.buildLog('example');
 119
 120 // With the default level
 121 Tap.equal(typeof builtLog._cologneLog, 'string',
 122   '#buildLog() should return a cologne log');
 123 Tap.equal(builtLog._level, 6,
 124   '#buildLog() should default to level 6');
 125
 126 // Now with a specific value
 127 builtLog = co.buildLog('example', 1);
 128
 129 Tap.equal(builtLog._level, 1,
 130   '#buildLog() should use the specified level');
 131
 132 // Extending object properties
 133 builtLog = co.buildLog({ message: 'example', rainbows: true }, 1);
 134
 135 Tap.equal(builtLog.message, 'example',
 136   '#buildLog() should use the message property as the message if available');
 137 Tap.equal(builtLog.rainbows, true,
 138   '#buildLog() should extend the object with its properties');
 139
 140 /**
 141  * TEST: #log() with builtLog.
 142  */
 143 co.log(builtLog);
 144
 145 levelCheck = dummyLoggerA.values.reduce(levelChecker(1), 0);
 146
 147 Tap.equal(levelCheck, 1,
 148   '#log() calls using a pre-built cologne log should maintain the log level');
 149
 150
 151 /**
 152  * TEST: #removeLogger()
 153  */
 154 co.removeLogger(dummyLoggerC);
 155
 156 Tap.equal(co.loggers.length, 2,
 157   '#removeLogger() should do nothing if it can\'t find a logger');
 158
 159 co.log(...logs);
 160 co.removeLogger(dummyLoggerB);
 161 co.log(1);
 162
 163 Tap.equal(co.loggers.length, 1,
 164   '#removeLogger() should remove a logger');
 165
 166 Tap.notEqual(dummyLoggerB.values.length, dummyLoggerA.values.length,
 167   '#removeLogger() should no longer affect removed logs');
 168
 169 /**
 170  * TEST: #addLogger()
 171  */
 172
 173 co.addLogger(dummyLoggerC);
 174 co.log(...logs);
 175
 176 Tap.equal(dummyLoggerC.values.length, logs.length,
 177   '#addLogger() should add loggers after instance is live');