我创建了这个中间件,当路由的唯一参数由next()
定义时,它将返回queryItems
。
我最近发现node-mocks-http假货表达req
和res
个对象。但它不会伪造next
。我想知道应该怎么做?下面我举例说明我打开next
回调并在其中定义expect
语句。
middleware.hasOnlyQuery = function(queryItems){
return function(req, res, next){
if(typeof queryItems == "string") queryItems = [queryItems]
if(_.hasOnly(req.query, queryItems)) return next()
return next("route")
}
}
这是测试。
it("should only have shop query", function(done){
var req = httpMocks.createRequest({
method: 'GET',
query: {
foo: "bar"
}
});
var res = httpMocks.createResponse()
var fn = middleware.hasOnlyQuery(["foo"])(req, res, function(err){
expect(err).to.equal()
return done()
})
})
it("should not only have shop query", function(done){
var req = httpMocks.createRequest({
method: 'GET',
query: {
foo: "bar",
bar: "foo"
}
});
var res = httpMocks.createResponse()
var fn = middleware.hasOnlyQuery(["foo"])(req, res, function(err){
expect(err).to.equal("route")
return done()
})
})
这是正确的方法吗?有没有办法让这更简单/更容易,也许可以将它转换为承诺,以便我可以使用chai-as-promised?
注意:_.hasOnly是自定义下划线mixin。
答案 0 :(得分:1)
我喜欢Sinon这样的测试:
// first test
...
var res = httpMocks.createResponse()
var spy = sinon.spy();
middleware.hasOnlyQuery(["foo"])(req, res, spy);
expect(spy.calledWithExactly()).to.be.true;
// second test
...
expect(spy.calledWithExactly('route')).to.be.true;
答案 1 :(得分:0)
使这种更平滑的一种方法是创建“下一个可以有的三种响应。”
function nextNormal(done){
return function(err){
expect(err).to.equal(undefined)
return done()
}
}
function nextRoute(done){
return function(err){
expect(err).to.equal("route")
return done()
}
}
function nextError(done){
return function(err){
expect(err).to.be.an('object')
return done()
}
}
然后你可以在一行中使用它
middleware.hasOnlyQuery(["foo", "bar"])(req, res, nextNormal(done))
答案 2 :(得分:0)
将中间件转换为与express-promise-router
一起使用的承诺。
middleware.hasOnlyQuery = function(queryItems){
return function(req, res){
if(typeof queryItems == "string") queryItems = [queryItems]
if(_.hasOnly(req.query, queryItems)) return Promise.resolve('next')
return Promise.resolve('route')
}
}
使用chai-as-promised
和bluebird
的新测试:
it("should fire correct next callback", function(done){
Promise.all([
middleware.hasOnlyQuery(["foo"])(reqFoo, res).should.eventually.equal("next"),
middleware.hasOnlyQuery(["foo", "bar"])(reqFoo, res).should.eventually.equal("route"),
middleware.hasOnlyQuery(["foo", "alpha"])(reqFoo, res).should.eventually.equal("route"),
middleware.hasOnlyQuery(["foo"])(reqFooBar, res).should.eventually.equal("route"),
middleware.hasOnlyQuery(["foo", "bar"])(reqFooBar, res).should.eventually.equal("next"),
middleware.hasOnlyQuery(["foo", "alpha"])(reqFooBar, res).should.eventually.equal("route")
]).then(function(){
done()
})
})