Changes

node_modules/winston/test/transports/file-tailrolling-test.js

@@ -0,0 +1,92 @@
+var assert = require('assert'),
+    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', 'testtailrollingfiles.log'),
+  maxsize: 4096,
+  maxFiles: 3,
+  tailable: true
+});
+
+process.on('uncaughtException', function (err) {
+  console.log('caught exception');
+  console.error(err);
+});
+
+vows.describe('winston/transports/file/tailrolling').addBatch({
+  "An instance of the File Transport": {
+    "when delete old test files": {
+      topic: function () {
+        var logs = path.join(__dirname, '..', 'fixtures', 'logs');
+        fs.readdirSync(logs).forEach(function (file) {
+          if (~file.indexOf('testtailrollingfiles')) {
+            fs.unlinkSync(path.join(logs, file));
+          }
+        });
+
+        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 == 4) {
+              return that.callback();
+            }
+
+            logKbytes(4, created);
+          });
+
+          logKbytes(4, created);
+        },
+        "should be 3 log files, base to maxFiles - 1": function () {
+          var file, fullpath;
+          for (var num = 0; num < 4; num++) {
+            file = !num ? 'testtailrollingfiles.log' : 'testtailrollingfiles' + num + '.log';
+            fullpath = path.join(__dirname, '..', 'fixtures', 'logs', file);
+
+            if (num == 3) {
+              return assert.ok(!fs.existsSync(fullpath));
+            }
+
+            assert.ok(fs.existsSync(fullpath));
+          }
+
+          return false;
+        },
+        "should have files in correct order": function () {
+          var file, fullpath, content;
+          ['D', 'C', 'B'].forEach(function (letter, i) {
+            file = !i ? 'testtailrollingfiles.log' : 'testtailrollingfiles' + i + '.log';
+            content = fs.readFileSync(path.join(__dirname, '..', 'fixtures', 'logs', file), 'ascii');
+
+            assert.lengthOf(content.match(new RegExp(letter, 'g')), 4068);
+          });
+        }
+      }
+    }
+  }
+}).export(module);