Sinon - 带回调的存根函数 - 导致测试方法超时
[英]Sinon - stubbing function with callback - causing test method to timeout
问题描述
I have a method on a express route that looks like this: 
我在快速路线上有一个方法，如下所示：
exports.register_post = function(req, res) {
var account = new Account();
account.firstName = req.param('firstName');
//etc...
account.save(function(err, result) {
email.sendOne('welcome', {}, function(err) {
res.render('account/register', {
title: 'Register'
});
});
});
};
I've got a test, where I have email stubbed. 我有一个测试，我有email存根。
email is a module I require in the route. email是我在路线中require的模块。
It has a function like: 它有如下功能：
exports = module.exports.sendOne = function(templateName, locals, cb)
My test looks like this: 我的测试看起来像这样：
describe('POST /account/register', function(done) {
var email;
beforeEach(function(done) {
accountToPost = {
firstName: 'Alex',
};
email = require('../../app/helpers/email');
sinon.stub(email)
done();
});
afterEach(function(done) {
email.sendOne.restore();
done();
})
it('creates account', function(done) {
request(app)
.post('/account/register')
.send(this.accountToPost)
.expect(200)
.end(function(err, res) {
should.not.exist(err)
//todo: asserts
done();
});
});
it('sends welcome email', function(done) {
request(app)
.post('/account/register')
.send(this.accountToPost)
.expect(200)
.end(function(err, res) {
should.not.exist(err)
sinon.assert.calledWith(email.sendOne, 'welcome');
done();
});
});
});
When I run the test, both fail, citing: 当我运行测试时，都失败了，引用：
1) Controller.Account POST /account/register creates account: Error: timeout of 2000ms exceeded at null.
2) Controller.Account POST /account/register sends welcome email: Error: timeout of 2000ms exceeded at null.
If I comment out email.sendOne('welcome', {}, function(err) { in my route, then the first test (create account) passes. 如果我注释掉email.sendOne('welcome', {}, function(err) {在我的路线中，则第一个测试（创建帐户）通过。
Have I missed something when setting up my sinon stub? 在设置我的sinon存根时我是否错过了什么？
1 个解决方案
解决方案1
5 已采纳 2013-12-01 23:49:01
Sinon stubs will not automatically fire any callback functions, you need to do this manually. Sinon存根不会自动触发任何回调函数，您需要手动执行此操作。 It's actually really east to do though: 尽管如此，它实际上是东方的：
describe('POST /account/register', function(done) {
var email;
beforeEach(function(done) {
accountToPost = {
firstName: 'Alex',
};
email = require('../../app/helpers/email');
sinon.stub(email);
email.sendOne.callsArg(2);
done();
});
afterEach(function(done) {
email.sendOne.restore();
done();
})
it('creates account', function(done) {
request(app)
.post('/account/register')
.send(this.accountToPost)
.expect(200)
.end(function(err, res) {
should.not.exist(err)
//todo: asserts
done();
});
});
it('sends welcome email', function(done) {
request(app)
.post('/account/register')
.send(this.accountToPost)
.expect(200)
.end(function(err, res) {
should.not.exist(err)
sinon.assert.calledWith(email.sendOne, 'welcome');
done();
});
});
});
Notice the specific line: 注意具体的行：
email.sendOne.callsArg(2);
The Sinon Stubs API has some good documentation on callsArg, and also callsArgWith (which may be useful for you testing error scenarios) Sinon Stubs API在callsArg上有一些很好的文档，还有一些callArgWith（这对你测试错误场景很有帮助）
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