试图了解Jasmine的toHaveBeenCalled（）匹配器 [英] Trying to understand Jasmine's toHaveBeenCalled() matcher

问题描述

我是新来的 jasmine 这是我的 src 文件，我在其中创建 Auth class

I am new to jasmine here is my src file in which i create Auth class

function Auth() {
}

Auth.prototype.isEmpty = function(str) {
    return (!str || 0 === str.length);
}

Auth.prototype.Login = function (username , password) {
    if (this.isEmpty(username) || this.isEmpty(password)) {
        return "Username or Password cann't be blank ";
    }
    else {
        return "Logged In !";
    }
}

现在我想测试茉莉花的 toHaveBeenCalled（） matcher。这是我写的

now i want to test jasmine's toHaveBeenCalled() matcher . Here is what i write

it("should be able to Login", function () {
    spyOn(authobj);
    expect(authobj.Login('abc', 'abc')).toHaveBeenCalled();
});

但它表示 undefined（）方法不存在

推荐答案

编辑：看看基码回答以获得更好的方法

Look at basecode answer for a better approach

从文档中，您应该像下面这样使用它：

From the docs, you should use it like the following:

spyOn(foo, 'setBar');

it("tracks that the spy was called", function() {
  expect(foo.setBar).toHaveBeenCalled();
});

所以你应该写：

it("should be able to Login", function () {
  spyOn(authobj, 'isEmpty');  
  authobj.Login('abc', 'abc');  
  expect(authobj.isEmpty).toHaveBeenCalled();
});

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