file-maxfiles-test.js
3.33 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
/*
* file-maxfiles-test.js: Tests for instances of the File transport setting the max file size,
* and setting a number for max files created.
* maxSize * maxFiles = total storage used by winston.
*
* (C) 2011 Daniel Aristizabal
* MIT LICENSE
*
*/
var assert = require('assert'),
exec = require('child_process').exec,
fs = require('fs'),
path = require('path'),
vows = require('vows'),
winston = require('../../lib/winston'),
helpers = require('../helpers');
var maxfilesTransport = new winston.transports.File({
timestamp: false,
json: false,
filename: path.join(__dirname, '..', 'fixtures', 'logs', 'testmaxfiles.log'),
maxsize: 4096,
maxFiles: 3
});
vows.describe('winston/transports/file/maxfiles').addBatch({
"An instance of the File Transport": {
"when passed a valid filename": {
topic: maxfilesTransport,
"should be a valid transporter": function (transportTest) {
helpers.assertFile(transportTest);
},
"should set the maxFiles option correctly": function (transportTest) {
assert.isNumber(transportTest.maxFiles);
}
},
"when delete old test files": {
topic: function () {
exec('rm -rf ' + path.join(__dirname, '..', 'fixtures', 'logs', 'testmaxfiles*'), this.callback);
},
"and when passed more files than the maxFiles": {
topic: function () {
var that = this,
created = 0;
function data(ch) {
return new Array(1018).join(String.fromCharCode(65 + ch));
};
function logKbytes(kbytes, txt) {
//
// With no timestamp and at the info level,
// winston adds exactly 7 characters:
// [info](4)[ :](2)[\n](1)
//
for (var i = 0; i < kbytes; i++) {
maxfilesTransport.log('info', data(txt), null, function () { });
}
}
maxfilesTransport.on('logged', function () {
if (++created === 6) {
return that.callback();
}
logKbytes(4, created);
});
logKbytes(4, created);
},
"should be only 3 files called 5.log, 4.log and 3.log": function () {
for (var num = 0; num < 6; num++) {
var file = !num ? 'testmaxfiles.log' : 'testmaxfiles' + num + '.log',
fullpath = path.join(__dirname, '..', 'fixtures', 'logs', file);
// There should be no files with that name
if (num >= 0 && num < 3) {
assert.throws(function () {
fs.statSync(fullpath);
}, Error);
} else {
// The other files should be exist
assert.doesNotThrow(function () {
fs.statSync(fullpath);
}, Error);
}
}
},
"should have the correct content": function () {
['D', 'E', 'F'].forEach(function (name, inx) {
var counter = inx + 3,
logsDir = path.join(__dirname, '..', 'fixtures', 'logs'),
content = fs.readFileSync(path.join(logsDir, 'testmaxfiles' + counter + '.log'), 'utf-8');
// The content minus the 7 characters added by winston
assert.lengthOf(content.match(new RegExp(name, 'g')), 4068);
});
}
}
}
}
}).export(module);