require.main.require可以工作，但是不能在Mocha测试中进行

问题描述

我已经编写了一个全局函数来要求我的应用程序/框架的某些文件:

I have written a global function for requiring certain files of my app/framework:

global.coRequireModel = function(name) {
    // CRASH happens here
    return require.main.require('./api/_co' + name + '/_co' + name + '.model');
}

此模块位于/components/coGlobalFunctions中.

This module is in /components/coGlobalFunctions.

在我的主应用程序app.js中，它是必需的，如下所示:

It is required in my main app app.js like this:

require('./components/coGlobalFunctions');

然后在其他模块中使用我使用的框架中的东西":

Then in other modules using "something" from the framework I use:

var baseScheme = coRequireModel('Base');

这是可行的，但在Mocha测试中不起作用，该测试在require.main.require调用之前给我一个错误:找不到模块".

This works but not in the Mocha tests which give me a "Error: Cannot find module" right before the require.main.require call.

测试似乎来自另一个源文件夹.但是我认为require.main.require可以消除必须相对链接到模块的方面.

It seems that the test is coming from another source folder. But I thought the require.main.require would take out the aspect of having to relatively linking to modules.

生活在api/用户中的示例测试文件:

An example test file living in api/user:

var should = require('should');
var app = require('../../app');
var User = require('./user.model');
...

推荐答案

require.main指向直接从节点运行的模块.因此，如果您运行node app.js，则require.main将指向app.js.另一方面，如果您使用mocha运行它，则require.main将指向摩卡.这可能是您的测试失败的原因.

require.main points to the module that was run directly from node. So, if you run node app.js, then require.main will point to app.js. If, on the other hand, you ran it using mocha, then require.main will point to mocha. This is likely why your tests are failing.

有关更多详细信息，请参见节点文档.

See the node docs of more details.

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