<tohavebeencalled>：期待间谍，但未定义

Question

我正在尝试在Ext4js中测试下面的功能

functionA: function {
   functionB();
}

这是我在测试中尝试的内容：

beforeEach(function (){
   somePanel= mockControlItem(subject, 'parentPanel', ['functionB']);
}

it("will run function B when functionA runs", function() {
   spyOn(subject,'onIdChanged');
   expect(subject).toHaveListener('show', 'functionA');
   somePanel.functionB.and.returnValue(true);
   subject.functionA();
   expect(somePanel.functionB).toHaveBeenCalled();
}

我收到错误：toHaveBeenCalled> : Expected a spy, but got undefined.

Answer 1

我认为你应该改变这条线

spyOn(somePanel, 'functionB').and.returnValue(true);

这个

.get_next()

an old reply

希望有所帮助