wangdu_wechat/node_modules/winston/test/transports/file-open-test.js

/*
 * file-open-test.js: Tests for File transport "open" event
 *
 * (C) 2014 William Wong
 * MIT LICENSE
 *
 */

var assert = require('assert'),
    fs = require('fs'),
    os  = require('os'),
    path = require('path'),
    vows = require('vows'),
    winston = require('../../lib/winston');

vows.describe('winston/transports/file').addBatch({
    'An instance of the File Transport': {
        topic: function () {
            var callback = this.callback.bind(this),
                logPath = path.resolve(__dirname, '../fixtures/logs/file-open-test.log');

            try {
                fs.unlinkSync(logPath);
            } catch (ex) {
                if (ex && ex.code !== 'ENOENT') { return callback(ex); }
            }

            var fileTransport = new (winston.transports.File)({
                    filename: logPath
                }),
                logger = new (winston.Logger)({
                    transports: [fileTransport]
                }),
                timeline = {};

            fileTransport.open(function () {
                timeline.open = Date.now();

                setTimeout(function () {
                    logger.info('Hello, World!', function () {
                        timeline.logged = Date.now();
                    });
                }, 100);

                setTimeout(function () {
                    callback(null, timeline);
                }, 1000);
            });
        },
        'should fire "open" event': function (results) {
            assert.isTrue(!!results.open);
        },
        'should fire "logged" event': function (results) {
            assert.isTrue(!!results.logged);
        }
    }
}).export(module);