使用Mocha在NodeJS和MongoDB中测试用户模型时没有结果

Question

我正在用mocha测试我的模型。我有以下文件：

test/utils.js

'use strict'; 
// Modified from https://github.com/elliotf/mocha-mongoose 

var config = require('../config/db.js'); 
var mongoose = require('mongoose'); 

// ensure the NODE_ENV is set to 'test' 
// this is helpful when you would like to change behavior when testing 
process.env.NODE_ENV = 'test'; 

beforeEach(function (done) { 

    function clearDB() { 
    for (var i in mongoose.connection.collections) { 
     mongoose.connection.collections[i].remove(function() {}); 
    } 
    return done(); 
    } 

    if (mongoose.connection.readyState === 0) { 
    mongoose.connect(config.url, function (err) { 
     if (err) { 
     throw err; 
     } 
     return clearDB(); 
    }); 
    } else { 
    return clearDB(); 
    } 
}); 


afterEach(function (done) { 
    mongoose.disconnect(); 
    return done(); 
}); 

test/testUserModel.js

'use strict'; 


// import the moongoose helper utilities 
var utils = require('../test/utils'); 
var should = require('should'); 
// import our User mongoose model 
var User = require('../app/models/user.js'); 

var testUser1 = new Object({ 
    profilePic: "testPic", 
    email: "testEmail", 
    first_name: "fname", 
    last_name: "lname", 
    description: "description", 
    personality: "personality", 
    phone_number: "phoneNum", 
    password: "password", 
    courses: { 
     course_name: "courseTest" 
     }, 
    role: "testRole" //student/admin/teacher 
}); 

var testUser2 = new Object({ 
    profilePic: "testPic2", 
    email: "testEmail2", 
    first_name: "fname2", 
    last_name: "lname2", 
    description: "description2", 
    personality: "personality2", 
    phone_number: "phoneNum2", 
    password: "password2", 
    courses: { 
     course_name: "courseTest2" 
     }, 
    role: "testRole2" //student/admin/teacher 
}); 

describe('Users: models', function() { 

describe('#register()', function() { 
    it('should register a new User', function (done) { 
     User.register(testUser1, function (err, createdUser) { 
     should.not.exist(err); 
     createdUser.email.should.equal("testEmail"); 
     createdUser.first_name.should.equal("fname"); 
     createdUser.phone_number.should.equal("phoneNum"); 
     createdUser.password.should.equal("password"); 
     createdUser.role.should.equal("testRole"); 
     done(); 
     }); 
    }); 
    }); 

    describe('#getAllUsers', function() { 

    it('should return all users in DB', function (done) { 

     console.log("about to add stuff"); 

     User.register(testUser1, function (err, createdUser) { 
      console.log(createdUser); 
     }); 

     User.register(testUser2, function (err, createdUser) { 
     console.log(createdUser); 
     }); 

     User.getAllUsers(function (err, createdUsers) { 
     should.not.exist(err); 
     createdUsers.should.be.instanceof(Array).and.have.lengthOf(2); 
     done(); 
     }); 
    }); 
    }); 
}); 

我已经测试用户的注册功能，它在测试#register（）在#getAllUsers工程确定， 然而（）我在两个用户对象testUser1和testUSer2上进行注册。但是我的User.getAllUsers函数没有从数据库中返回任何东西。在部署这两个函数工作正常，你可以添加大量的用户，他们显示在GUI中的列表。看起来在User.register函数调用后，数据库得到了清除，所以当它到达User.getAllUsers时，什么都没有。有任何想法吗？

Answer 1

与您的代码：

describe('#getAllUsers', function() { 

it('should return all users in DB', function (done) { 

    console.log("about to add stuff"); 

    User.register(testUser1, function (err, createdUser) { 
     console.log(createdUser); // register was successfull 
    }); 

    User.register(testUser2, function (err, createdUser) { 
    console.log(createdUser); //register was successfull 
    }); 

// Here, it should set in callback, when register function was successfull 
    User.getAllUsers(function (err, createdUsers) { 
    should.not.exist(err); 
    createdUsers.should.be.instanceof(Array).and.have.lengthOf(2); 
    done(); 
    }); 
}); 

你可以看到寄存器中的例子是全成如下：

it('should return all users in DB', function (done) { 

    console.log("about to add stuff"); 

    User.register(testUser1, function (err, createdUser) { 
     console.log(createdUser); 
     // here, it should set in callback, when register is successfull 
     User.getAllUsers(function (err, createdUsers2) { 
     should.not.exist(err); 
     createdUsers2.should.be.instanceof(Array).and.have.lengthOf(1); 
     done(); 
     }); 
    }); 

});