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'use strict';
const Tap = require('tap');
const { Cologne } = require('..');
// Utility Functions
const createDummyLogger = function () {
return {
values: null,
log(...logs) {
this.values = [];
for (const log of logs) {
this.values.push(log);
}
}
};
};
const levelChecker = function (level) {
return (count, log) => (log._level === level ? ++count : count);
};
// Prepare the test
Tap.plan(19);
const dummyLoggerA = createDummyLogger();
const dummyLoggerB = createDummyLogger();
const dummyLoggerC = createDummyLogger();
const co = new Cologne({
loggers: [
dummyLoggerA,
dummyLoggerB
]
});
const logs = ['example1', null, undefined, 1, { example: true }];
/**
* TEST: #log()
*/
co.log(...logs);
// Calculate values
const valueCheck = dummyLoggerA.values.reduce((count, log) => (typeof log._cologneLog === 'string' ? ++count : count), 0);
let levelCheck = dummyLoggerA.values.reduce(levelChecker(6), 0);
// Now check the values
Tap.equal(dummyLoggerA.values.length, logs.length,
'#log() should send every argument to the loggers');
Tap.similar(dummyLoggerA.values, dummyLoggerB.values,
'#log() should send the same arguments to all the loggers');
Tap.equal(valueCheck, logs.length,
'#log() should send all objects in cologne log format');
Tap.equal(levelCheck, logs.length,
'#log() should default to level 6');
/**
* TEST: #debug()
*/
co.debug(...logs);
levelCheck = dummyLoggerA.values.reduce(levelChecker(7), 0);
Tap.equal(levelCheck, logs.length,
'#debug() should set to level 7');
/**
* TEST: #info()
*/
co.info(...logs);
levelCheck = dummyLoggerA.values.reduce(levelChecker(6), 0);
Tap.equal(levelCheck, logs.length,
'#info() should set to level 6');
/**
* TEST: #notice()
*/
co.notice(...logs);
levelCheck = dummyLoggerA.values.reduce(levelChecker(5), 0);
Tap.equal(levelCheck, logs.length,
'#notice() should set to level 5');
/**
* TEST: #warn()
*/
co.warn(...logs);
levelCheck = dummyLoggerA.values.reduce(levelChecker(4), 0);
Tap.equal(levelCheck, logs.length,
'#warn() should set to level 4');
/**
* TEST: #error()
*/
co.error(...logs);
levelCheck = dummyLoggerA.values.reduce(levelChecker(3), 0);
Tap.equal(levelCheck, logs.length,
'#error() should set to level 3');
/**
* TEST: #buildLog()
*/
let builtLog = co.buildLog('example');
// With the default level
Tap.equal(typeof builtLog._cologneLog, 'string',
'#buildLog() should return a cologne log');
Tap.equal(builtLog._level, 6,
'#buildLog() should default to level 6');
// Now with a specific value
builtLog = co.buildLog('example', 1);
Tap.equal(builtLog._level, 1,
'#buildLog() should use the specified level');
// Extending object properties
builtLog = co.buildLog({ message: 'example', rainbows: true }, 1);
Tap.equal(builtLog.message, 'example',
'#buildLog() should use the message property as the message if available');
Tap.equal(builtLog.rainbows, true,
'#buildLog() should extend the object with its properties');
/**
* TEST: #log() with builtLog.
*/
co.log(builtLog);
levelCheck = dummyLoggerA.values.reduce(levelChecker(1), 0);
Tap.equal(levelCheck, 1,
'#log() calls using a pre-built cologne log should maintain the log level');
/**
* TEST: #removeLogger()
*/
co.removeLogger(dummyLoggerC);
Tap.equal(co.loggers.length, 2,
'#removeLogger() should do nothing if it can\'t find a logger');
co.log(...logs);
co.removeLogger(dummyLoggerB);
co.log(1);
Tap.equal(co.loggers.length, 1,
'#removeLogger() should remove a logger');
Tap.notEqual(dummyLoggerB.values.length, dummyLoggerA.values.length,
'#removeLogger() should no longer affect removed logs');
/**
* TEST: #addLogger()
*/
co.addLogger(dummyLoggerC);
co.log(...logs);
Tap.equal(dummyLoggerC.values.length, logs.length,
'#addLogger() should add loggers after instance is live');
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