Javascript 带mocha的单元测试节点模块，模块变量动作奇怪

我会用一些代码来做生意：

hangman.io.js:

var from = require('fromjs'),
    fs = require('fs');

var defaultBasePath = 'lib/hangman/wordlists';
var filePaths = [];

function init(basePath) {
    basePath = basePath || defaultBasePath;
    filePaths = loadPaths(basePath);
}

function loadPaths(basePath) {
    var wordLists = fs.readdirSync(basePath);
    return from(wordLists).select(function (x) {
        return basePath + '/' + x;
    }).toArray();
}

function getFilePath(type) {
    if (!filePaths || 
        !(filePaths instanceof Array) || 
        !(filePaths.length > 0)) throw new Error('No file paths registered.');
    ...
}

module.exports = {
    init: init,
    getFilePath: getFilePath
}

var io = require('../hangman.io'),
    should = require('should');

describe('io', function () {
    before(function () {
        io.init();
    });
    describe('getLineCount(path)', function () {
        var path = io.getFilePath('test'); //<== this lines throws the exception 
        //"No file paths registered", even tho I have called init() on io.
        var count = io.getLineCount(path);
        count.should.be.an.Number;
        count.should.be.eql(4);
    });
});

var io = require('../hangman.io'),
    should = require('should');

describe('io', function () {
    before(function () {
        io.init();
    });
    describe('getLineCount(path)', function () {
        it('should return a line count of 4 when type is "test"', function(){
            var path = io.getFilePath('test'); //<== this lines throws the exception 
            //"No file paths registered", even tho I have called init() on io.
            var count = io.getLineCount(path);
            count.should.be.an.Number;
            count.should.be.eql(4);
        })
    });
});

hangman.io.tests.js:

var from = require('fromjs'),
    fs = require('fs');

var defaultBasePath = 'lib/hangman/wordlists';
var filePaths = [];

function init(basePath) {
    basePath = basePath || defaultBasePath;
    filePaths = loadPaths(basePath);
}

function loadPaths(basePath) {
    var wordLists = fs.readdirSync(basePath);
    return from(wordLists).select(function (x) {
        return basePath + '/' + x;
    }).toArray();
}

function getFilePath(type) {
    if (!filePaths || 
        !(filePaths instanceof Array) || 
        !(filePaths.length > 0)) throw new Error('No file paths registered.');
    ...
}

module.exports = {
    init: init,
    getFilePath: getFilePath
}

var io = require('../hangman.io'),
    should = require('should');

describe('io', function () {
    before(function () {
        io.init();
    });
    describe('getLineCount(path)', function () {
        var path = io.getFilePath('test'); //<== this lines throws the exception 
        //"No file paths registered", even tho I have called init() on io.
        var count = io.getLineCount(path);
        count.should.be.an.Number;
        count.should.be.eql(4);
    });
});

var io = require('../hangman.io'),
    should = require('should');

describe('io', function () {
    before(function () {
        io.init();
    });
    describe('getLineCount(path)', function () {
        it('should return a line count of 4 when type is "test"', function(){
            var path = io.getFilePath('test'); //<== this lines throws the exception 
            //"No file paths registered", even tho I have called init() on io.
            var count = io.getLineCount(path);
            count.should.be.an.Number;
            count.should.be.eql(4);
        })
    });
});

---

好吧，我很抱歉对这件事大惊小怪。这件事已经纠缠了很长时间了。我想我有点沮丧和压力

不管怎么说，这是我纠正错误的“解决方案”

hangman.io.tests.js:

var from = require('fromjs'),
    fs = require('fs');

var defaultBasePath = 'lib/hangman/wordlists';
var filePaths = [];

function init(basePath) {
    basePath = basePath || defaultBasePath;
    filePaths = loadPaths(basePath);
}

function loadPaths(basePath) {
    var wordLists = fs.readdirSync(basePath);
    return from(wordLists).select(function (x) {
        return basePath + '/' + x;
    }).toArray();
}

function getFilePath(type) {
    if (!filePaths || 
        !(filePaths instanceof Array) || 
        !(filePaths.length > 0)) throw new Error('No file paths registered.');
    ...
}

module.exports = {
    init: init,
    getFilePath: getFilePath
}

var io = require('../hangman.io'),
    should = require('should');

describe('io', function () {
    before(function () {
        io.init();
    });
    describe('getLineCount(path)', function () {
        var path = io.getFilePath('test'); //<== this lines throws the exception 
        //"No file paths registered", even tho I have called init() on io.
        var count = io.getLineCount(path);
        count.should.be.an.Number;
        count.should.be.eql(4);
    });
});

var io = require('../hangman.io'),
    should = require('should');

describe('io', function () {
    before(function () {
        io.init();
    });
    describe('getLineCount(path)', function () {
        it('should return a line count of 4 when type is "test"', function(){
            var path = io.getFilePath('test'); //<== this lines throws the exception 
            //"No file paths registered", even tho I have called init() on io.
            var count = io.getLineCount(path);
            count.should.be.an.Number;
            count.should.be.eql(4);
        })
    });
});

---

在此错误之前，我进行了大量的单元测试，没有丢失

it（）

函数，这可能是重构我的测试所导致的一些错误。

可以显示io.init的代码吗？正如您所看到的，my.io.js有一个名为init的方法，该方法已导出，我看到我对示例做了一些修改，我会修复它。请你在

io.js

中发布

加载路径

函数的代码好吗？我知道fromjs库没有bug，用

加载路径（基本路径）

函数更新了问题好吧，我在这里发现了bug，是我忘记了使用

它（'should blabla…'，callback）;在
description（）函数中。