Mocha setup mongoose models

I want to start my server and then test the endpoints. My server.js loades all models and routes, but when it gets to the before each function, I get the following error.

Uncaught MissingSchemaError: Schema hasn't been registered for model "Test".
Use mongoose.model(name, schema)

I understand that I could register the models in the testfile as suggested in the error message but is that really needed?

controllerTest.js

(function () {
  "use strict";

  var app = require("../../../server");
  var should = require("should"),
    mongoose = require("mongoose"),
    mockgoose = require("mockgoose");

  var request = require("supertest"),
    agent = request.agent(app);

  mockgoose(mongoose);


  var test;

  describe("Test Controller", function () {

    beforeEach(function (done) {
       var Test = mongoose.model("Test");
       test = new Test({});
       test.save(function (error, savedObj) {});
       done();
    });
  })
}());

server.js

(function () {
  'use strict';

  console.log("Starting Server...");
  var express = require('express'),
    config = require('./config/defaultConfig'),
    mongoose = require('mongoose');

  mongoose.connect('host', 'datastore');

  var port = config.server.port || 9000;
  var app = express();
  app.config = config;
  require('./config/expressConfig')(app, express);
  require('./config/modelsConfig').getModels(requireResource);
  require('./config/routesConfig').getRoutes(requireResource);

  function requireResource(files, isAppRequired) {

    files.forEach(function (file) {
      (isAppRequired) ? require(file)(app) : require(file)();
    });
  }

  app.listen(port);
  console.log("Server started at port: " + port);

  exports = module.exports = app;
}());

modelsConfig.js

(function () {
  "use strict";

  var glob = require("glob"),
    config = require("./defaultConfig");

  module.exports.getModels = function (callback) {
    glob("/**/**/*Model.js", {
      root: config.server.rootPath + "/server"
    }, function (error, matches) {
      callback(matches, false);
    });
  }
}());

I console logged the matches and require calls and it seems that they get called before the testfile reaches before each.