@Pattern，JSR303 bean验证：正则表达式检查最多5个单词，而不是空白(@Pattern , JSR303 bean validation : regex check max 5 words and not blank)

 我已将测试脚本从Coffee Script移植到JavaScript并在NodeUnit中运行，见下文。 
 
 虽然我改变了两件事。 首先，而不是： 
 
@db.connection.on 'open', () ->
 
 我这样做了（在Coffee Script中）： 
 
mongoose.connection.on 'open', () ->
 
 其次，我已经颠倒了顺序或者注册了回调并建立了连接。 
 
 生成的JavaScript： 
 
var mongoose = require('mongoose');
var models = require('./models');
var Task = models.Task;

var db;

module.exports = {
    setUp: function(callback) {
        try {
            //db.connection.on('open', function() {
            mongoose.connection.on('open', function() {
                console.log('Opened connection');
                callback();
            });

            db = mongoose.connect('mongodb://localhost/test_1');
            console.log('Started connection, waiting for it to open');
        }

        catch (err) {
            console.log('Setting up failed:', err.message);
        }
    },

    tearDown: function(callback) {
        console.log('In tearDown');
        try {
            console.log('Closing connection');
            db.disconnect();
            callback();
        }

        catch (err) {
            console.log('Tearing down failed:', err.message);
        }
    },

    getTasks: function(test) {
        console.log('running first test');
        Task.find({}, function (err, result) {
            if (!err) {
                console.log('results' + result);
                test.ok(result);
            } else {
                console.log('error' + err);
            }

            test.ifError(err);
            test.done();
        });
    }
};
 
 Models.js 
 
var mongoose = require('mongoose');

var TaskSchema = new mongoose.Schema({
    field1: String,
    field2: Number
});

module.exports.Task = mongoose.model('Task', TaskSchema);
 
 结果输出： 
 
$ ~/node_modules/nodeunit/bin/nodeunit test.js 

test.js
Started connection, waiting for it to open
Opened connection
running first test
results
In tearDown
Closing connection
✔ getTasks

OK: 2 assertions (198ms)
 
 我必须注意，当MongoDB没有运行/不可连接时，测试失败就像你说的那样。 所以你可能也想检查你的连接字符串。 

I've ported the test script from Coffee Script to JavaScript and ran it in NodeUnit, see below.
 
There were two things I have changed though. First, instead of:
 
@db.connection.on 'open', () ->
 
I did this (in Coffee Script):
 
mongoose.connection.on 'open', () ->
 
Second, I've reversed the order or registering the callback and making the connection.
 
The resulting JavaScript:
 
var mongoose = require('mongoose');
var models = require('./models');
var Task = models.Task;

var db;

module.exports = {
    setUp: function(callback) {
        try {
            //db.connection.on('open', function() {
            mongoose.connection.on('open', function() {
                console.log('Opened connection');
                callback();
            });

            db = mongoose.connect('mongodb://localhost/test_1');
            console.log('Started connection, waiting for it to open');
        }

        catch (err) {
            console.log('Setting up failed:', err.message);
        }
    },

    tearDown: function(callback) {
        console.log('In tearDown');
        try {
            console.log('Closing connection');
            db.disconnect();
            callback();
        }

        catch (err) {
            console.log('Tearing down failed:', err.message);
        }
    },

    getTasks: function(test) {
        console.log('running first test');
        Task.find({}, function (err, result) {
            if (!err) {
                console.log('results' + result);
                test.ok(result);
            } else {
                console.log('error' + err);
            }

            test.ifError(err);
            test.done();
        });
    }
};
 
Models.js
 
var mongoose = require('mongoose');

var TaskSchema = new mongoose.Schema({
    field1: String,
    field2: Number
});

module.exports.Task = mongoose.model('Task', TaskSchema);
 
And the resulting output:
 
$ ~/node_modules/nodeunit/bin/nodeunit test.js 

test.js
Started connection, waiting for it to open
Opened connection
running first test
results
In tearDown
Closing connection
✔ getTasks

OK: 2 assertions (198ms)
 
I do have to note that when MongoDB was not running/not connectable, the tests were failing like you stated. So you might want to check your connection string as well.