[英]unit testing async-waterfall using mocha
I am using Mocha as a testing framework for my node.js application. 我正在使用Mocha作为我的node.js应用程序的测试框架。
I have an existing module that uses async-waterfall node module.I am trying to write a unit test case for it. 我有一个使用异步瀑布节点模块的现有模块,我正在尝试为此编写一个单元测试用例。 I am unable to write a test case for the second function in the array.
我无法为数组中的第二个功能编写测试用例。 Any tips on how would I pass the result of one function to the next function in the array
var async = require('async');
关于如何将一个函数的结果传递给数组中下一个函数的任何提示
var async = require('async');
module.exports.resetPassword = function(req,res,next){
async.waterfall([
function(done){
var token = do something;
done(err,token);
},
function(token,done){
//do some stuff
res.status(200).send('success');
},
]function(err){
//send failure response
});
};
I think I understand the issue now. 我想我现在已经明白了这个问题。 In your test - you execute the line:
在测试中-执行以下行:
user.resetPassword(request,response,next);
And immediately after that - the line: 然后紧接着-行:
cryptoStub.restore();
The issue is - that async.waterfall will start the first method, but before it runs the second one, it will run the next line from the unit test, and therefore you don`t see the next method. 问题是-async.waterfall将启动第一个方法,但是在运行第二个方法之前,它将运行单元测试的下一行,因此您看不到下一个方法。 Code that will solve it will be like:
将解决它的代码将类似于:
user.resetPassword(request,response,function(err) {
cryptoStub.restore();
done();
});
Does it look better? 看起来好点吗?
My code is as follows. 我的代码如下。 My issue is around writing a unit test case for this method.
我的问题是为这种方法编写单元测试用例。 I am using mocha along with sinon for stubbing.
我正在将摩卡咖啡与sinon一起使用。 The unit test that I have written is
我写的单元测试是
Unit Test 单元测试
it("Should return an error if there is an error in retrieving the user details from the db",function(done)
{
request={
body:{
email:'test@test.com'
}
};
var expectedMessageFromCrypto = '12121212121';
var cryptoStub = sinon.stub(crypto, "randomBytes",function(err,callback){
callback(null,expectedMessageFromCrypto);
});
user.resetPassword(request,response,next);
cryptoStub.restore();
done();
});
});
The resetPassword module resetPassword模块
methods.exports.resetPassword = function (req, res, next) {
var token = null;
async.waterfall([
function (done) {
crypto.randomBytes(16, function (err, buf) {
if(err){
return res.status(400);
}
else{
token = buf.toString('hex');
}
done(err, token);
});
},
function (token, done) {
var user = getUserInformation(req.body.email);
sendEmail(user, done);
}
], function (err) {
if (err) {
logger.error('error in sending confirmation mail');
return next(err);
}
res.status(200).send('success');
});
};
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