如何使用Jasmine来测试是否创建了实例? [英] How to use Jasmine to test if an instance is created?

问题描述

您好，我是使用茉莉花的新手.问题如下:我有许多模块，通过RequireJS管理.现在，模块A在其中创建另一个模块B的实例.是否可以使用Jasmine来测试是否在A中创建了B的实例?为了传达更清晰的代码概念，我们有:

Hi Am new to using Jasmine. The issue is as follows: I have a number of modules, managed through RequireJS. Now a module A creates an instance of another module B in it. Is it possible to use Jasmine to test whether an instance of B is being created in A? To convey a clearer idea of the code, we have:

             //In module A 
             define(['B',],function(B){
                 function test(){
                    var newTest = new B();
                 };
                 return {test: test};
              });

现在，我该如何使用Jasmine来测试该模块A，并创建模块B的实例?预先感谢！

Now, how do i use Jasmine to test that module A indeed, creates an instance of module B? Thanks in advance!

致谢

推荐答案

这是在Jasmine测试中检查对象类型的一种方法:

Here's one way to check the type of an object in a Jasmine test:

describe('ChocolateFactory', function() {
    it('creates an instance of Chocolate', function() {
        var factory = new ChocolateFactory();
        var chocolate = factory.makeChocolate();
        expect(chocolate instanceof Chocolate).toBe(true);
    });
});

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