[英]Test void with karma jasmine angular2
我正在尝试用茉莉花和业力测试我的代码。
当我测试返回值的方法时就可以了。 但是我的问题是如何测试一个空方法(不返回任何内容),例如:
public aj(a: Array<x>, p: x) {
if (a.indexOf(p) < 0) {
a.push(p);
}
}
使用此功能,我检查对象`x的数组是否包含一个对象或否。
如果不是这种情况,我将其添加到数组中。 就这样。
我这样测试
it('', () => {
let component= new synthese(consoService);
let x = [pHC,pHP]
spyOn(component,'aj');
expect(component.aj(x,pI)).toHaveBeenCalled();
});
我得到这个错误
Error: <toHaveBeenCalled> : Expected a spy, but got undefined.
Usage: expect(<spyObj>).toHaveBeenCalled()
有人可以帮我吗? 我尝试过,但总是出错。
像这样更改代码:
it('', () => {
let component = new synthese(consoService);
const spyAj = spyOn(component, 'aj');
let x = [pHC, pHP]; // maybe you should check this, shouldn't it be let x = ['pHC','pHP']; ?
component.aj(x, pI); // maybe you should check this, shouldn't it be component.aj(x, 'pI'); ?
expect(spyAj).toHaveBeenCalled();
// also, I recommend do this test:
// check pI is in the array now since that's what the method does, push the element if it is not in the array
expect(x.indexOf(pI)).not.toBe(-1); // I used pI, but maybe check for 'pI' as my previous recommendations.
});
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