我无法从 Angular - Karma/Jasmine 单元测试中的规范文件访问组件

I can't reach the component from the spec file in Angular - Karma/Jasmine unit tests

我正尝试 运行 在 Angular 中进行简单的单元测试,但它失败了,我无法从 spec 文件访问该组件。它说找不到未定义的 属性,我不知道 mistake.this 是我要测试的组件中的函数:

factorOrQuickpay(): void {
    if (this.load.factor) {
        this.factor = true;
        this.resourceType = TableResources.Factor;
    } else if (!this.load.factor) {
        this.factor = false;
        this.resourceType = TableResources.Quickpay;
    } else if(!this.load.factor && !this.load.quickpay) {
        this.none = true;
    }
}

这是 .spec 文件:

import { ComponentFixture, TestBed } from '@angular/core/testing';

import { LoadResourcesComponent } from './load-resources.component';

describe('LoadResourcesComponent', () => {
    let component: LoadResourcesComponent;
    let fixture: ComponentFixture<LoadResourcesComponent>;

    beforeEach(async () => {
        await TestBed.configureTestingModule({
            declarations: [LoadResourcesComponent],
        }).compileComponents();
    });

    beforeEach(() => {
        fixture = TestBed.createComponent(LoadResourcesComponent);
        component = fixture.componentInstance;
        fixture.detectChanges();
    });

    fdescribe('factorOrQuickpay', () => {
        beforeEach(() => {
            spyOn(component, 'factorOrQuickpay');
        });

        it('shows Factor Load scenario', () => {
            component.factorOrQuickpay()
            expect(component.factor).toBe(true);
        });
    });
});

你能帮我找出错误在哪里吗?

错误信息是“TypeError: Cannot read 属性 'factor' of undefined.”

谢谢。

我认为您的节​​点版本是 15.0。将您的节点版本降级到节点 14.0 即可。

参考这个: https://github.com/karma-runner/karma/issues/3571