如何使用Jest测试Reflux动作 [英] How to test Reflux actions with Jest
本文介绍了如何使用Jest测试Reflux动作的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我在测试Reflux操作在我的应用程序中正确触发时遇到了困难,事实上它们似乎与Jest完全没有关系。我有这个例子测试:
I'm having difficulty testing that Reflux actions are triggering correctly in my application, and in fact they do not seem to be working at all with Jest. I have this example test:
jest.autoMockOff();
describe('Test', function () {
it('Tests actions', function () {
var Reflux = require('../node_modules/reflux/index');
var action = Reflux.createAction('action');
var mockFn = jest.genMockFn();
var store = Reflux.createStore({
init: function () {
this.listenTo(action, this.onAction);
},
onAction: function () {
mockFn();
}
});
action('Hello World');
expect(mockFn).toBeCalled();
});
});
哪些输出:
● Test › it Tests actions
- Expected Function to be called.
at Spec.<anonymous> (__tests__/Test.js:20:20)
at Timer.listOnTimeout [as ontimeout] (timers.js:112:15)
即使使用Jasmine异步功能,它似乎也无法正常工作
Even with Jasmine async functions it doesn't seem to be working
jest.autoMockOff();
describe('Test', function () {
it('Tests actions', function () {
var Reflux = require('../node_modules/reflux/index');
var action = Reflux.createAction('action');
var mockFn = jest.genMockFn();
var flag = false;
var store = Reflux.createStore({
init: function () {
this.listenTo(action, this.onAction);
},
onAction: function () {
mockFn();
flag = true;
}
});
runs(function () {
action();
});
waitsFor(function () {
return flag;
}, 'The action should be triggered.', 5000);
runs(function () {
expect(mockFn).toBeCalled();
});
});
});
给了我......
FAIL __tests__/Test.js (6.08s)
● Test › it Tests actions
- Throws: [object Object]
有人做过这项工作吗?
推荐答案
我弄清楚了!我只需要使用Jest自己的方法来快速转发任何计时器。即只需添加行
I figured it out! I just needed to use Jest's own methods for fast-forwarding any timers. i.e. just add the line
jest.runAllTimers();
所以我的第一个例子的工作版本将是
So the working version of my first example would be
jest.autoMockOff();
describe('Test', function () {
it('Tests actions', function () {
var Reflux = require('../node_modules/reflux/index');
var action = Reflux.createAction('action');
var mockFn = jest.genMockFn();
var store = Reflux.createStore({
init: function () {
this.listenTo(action, this.onAction);
},
onAction: function () {
mockFn();
}
});
action('Hello World');
jest.runAllTimers();
expect(mockFn).toBeCalled();
});
});
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