[英]Async Function stubbing in sinon invokes actual function call
I have an async function when I run unit test with mocha,I see it is not stubbing it.I don't see console.log is printing the log in function,It looks like actual getUser() function is getting called. 当我用mocha运行单元测试时,我有一个异步函数,我看到它没有存根。我没有看到console.log正在打印登录函数,看起来像是在调用实际的getUser()函数。
// User.js
class User {
async _getUser(client, email) {
let result = await new userApi().getUser(new UserInfo(email, email));
console.log("Get result " + JSON.stringify(result));
let user = result.users[0];
console.log("Get User " + JSON.stringify(user));
return user;
}
}
module.exports = User;
// Usertest.js
const chai = require("chai");
const sinon = require("sinon");
var chaiAsPromised = require("chai-as-promised");
chai.use(chaiAsPromised).should();
const expect = chai.expect;
const UserInfo = require("../src/model/userInfo");
const User = require("../src/model/user");
describe("Test LogInCommand", function() {
let user, sandbox;
beforeEach(() => {
sandbox = sinon.sandbox.create();
user = new user();
});
afterEach(function afterEach() {
sandbox.restore();
});
it("getUser function", function(done) {
let User = new UserInfo("email", "email", "station");
sandbox
.stub(userApi, "getUser")
.withArgs(User)
.returns(
Promise.resolve({
users: [
{
id: 1
}
]
})
);
sandbox.stub(logger, "info");
let result = logInCommand._getUser(client, "email", "stationid");
done();
});
});
I assume that userApi
is a class so in order to stub it, we must do like below: 我假设userApi
是一个类,所以为了对它进行存根,我们必须像下面这样:
sandbox.stub(userApi.prototype, "getUser").withArgs(User)...
we must add prototype
to stub a method of class. 我们必须添加prototype
以存根类的方法。
I also find something to fix in your test, it is because you don't treat logInCommand._getUser
as async call. 我还在测试中找到了要修复的问题,这是因为您没有将logInCommand._getUser
视为异步调用。 So, here is the code after updated. 因此,这是更新后的代码。
it("getUser function", async function() { // remove `done` and let's use async/await here
let User = new UserInfo("email", "email", "station");
sandbox
.stub(userApi.prototype, "getUser") // add prototype
.withArgs(User)
.resolves({ // in new sinon, they have `resolves` method
users: [
{
id: 1
}
]
});
sandbox.stub(logger, "info");
let result = await logInCommand._getUser(client, "email", "stationid"); // add await because this method is async
// remove done()
});
Hope it helps 希望能帮助到你
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