使用Jasmine对我的angularJS应用程序进行单元测试时，$ interval是未定义的

Question

When writing unit tests for my application using Jasmine I have a $interval function which i need to test. To that extend, I am trying to inject $interval and call $interval.flush();

I have the following code (this is a stripped version)

describe("whatever", function () {

var $interval;

beforeEach(function () {
    angular.mock.module('whatever');

    angular.mock.inject(function (_$interval_) {
        $interval = _$interval_;
    });
});

describe("requestIntervalFunction", function () {
           $interval.flush(21000); //this gives me error "Cannot read property "flush" of undefined
        });

My question is, how come that it says $interval is undefined?

Answer 1

You are missing your specificaton part.Thats why you getting such an error.

Add by define it function

describe("requestIntervalFunction", function() {
        it("test",function(){
            $interval.flush(21000); //this gives me error "Cannot read property "flush" of undefined    
        })

    });