javascript 如何使用 sinon.js 对回调函数的内容进行单元测试
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how to unit test contents of a callback function with sinon.js
提问by Грозный
how does one test a code inside a callback function using sinon.jsframework for mocking?
如何使用sinon.js模拟框架测试回调函数中的代码？
JSFiddle: http://jsfiddle.net/ruslans/CE5e2/
JSFiddle：http: //jsfiddle.net/ruslans/CE5e2/
var service = function () {
return {
getData: function (callback) {
return callback([1, 2, 3, 4, 5]);
}
}
};
var model = function (svc) {
return {
data: [],
init: function () {
var self = this;
svc.getData(function (serviceData) {
self.data = serviceData; // *** test this line ***
});
}
}
};
I use mocha tests with chai but am familiar with qUnit, so any of these tests would be accepted.
我使用带有 chai 的 mocha 测试但熟悉 qUnit，因此任何这些测试都将被接受。
回答by Грозный
callsArgWith(0, dataMock)does the trick:
http://jsfiddle.net/ruslans/3UtdF/
callsArgWith(0, dataMock)诀窍：http:
//jsfiddle.net/ruslans/3UtdF/
var target,
serviceStub,
dataMock = [0];
module("model tests", {
setup: function () {
serviceStub = new service();
sinon.stub(serviceStub);
serviceStub.getData.callsArgWith(0, dataMock);
target = new model(serviceStub);
},
teardown: function () {
serviceStub.getData.restore();
}
});
test("data is populated after service.getData callback", function () {
target.init();
equal(target.data, dataMock);
});
