我有一个NodeJS应用程序,连接到一个Mongo数据库,然后初始化所有的路由,一旦连接已经建立。我想为测试请求添加一些使用服务器和supertest
的Mocha测试。但是,要从test.js
文件检索服务器,我需要require()
主文件并从中获取服务器变量。但是,当我尝试使用它时,它会报告变量未定义,因为数据库没有加载,路由也没有初始化。
main.js (extract)
// This is a custom mongo module that connects using my db string
// It stores the DB as a variable in another file, which is later retrieved by the route handlers using mongo.GetDB()
mongo.ConnectToDB(function(err, dbo){
if(err) throw err;
require("./api")(app);
require("./admin")(app);
require("./routes")(app);
});
// This obviously doesn't work, as it's outside of the callback
module.exports.server = app.listen(4500);
server.test.js (extract)
describe("loading express", (done) => {
let server;
beforeEach(() => {
// The server is returned, but none of the routes are included
server = require("../main").server;
});
afterEach(() => {
server.close();
});
// ...
});
在检索server
变量并继续进行Mocha测试之前,有没有办法等待数据库和初始化的路由?
发布于 2018-06-08 03:53:19
让main.js
导出一个Promise
,如下所示:
module.exports.serverPromise = new Promise((resolve, reject) => {
mongo.ConnectToDB(function(err, dbo){
if(err) reject(err);
require("./api")(app);
require("./admin")(app);
require("./routes")(app);
resolve(app.listen(4500));
});
});
然后,在导入后,您可以在Promise
上调用.then
之后使用它
https://stackoverflow.com/questions/50749136
复制相似问题