升级Angular到17版本后,Karma和Jasmine测试中可能会出现一些错误。以下是几个常见错误及其解决方法。
import { TestBed } from '@angular/core/testing';
import { AppComponent } from './app.component';
describe('AppComponent', () => {
beforeEach(async () => {
await TestBed.configureTestingModule({
declarations: [AppComponent],
}).compileComponents();
});
it('should create the app', () => {
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.componentInstance;
expect(app).toBeTruthy();
});
});
import { TestBed, ComponentFixture } from '@angular/core/testing';
import { AppComponent } from './app.component';
describe('AppComponent', () => {
let fixture: ComponentFixture;
let component: AppComponent;
beforeEach(async () => {
await TestBed.configureTestingModule({
declarations: [AppComponent],
}).compileComponents();
});
beforeEach(() => {
fixture = TestBed.createComponent(AppComponent);
component = fixture.componentInstance;
});
it('should create the app', () => {
expect(component).toBeTruthy();
});
});
这些是一些常见的错误和解决方法。如果你遇到其他错误,可以参考Karma和Jasmine的官方文档,或在Angular的GitHub页面上搜索相关问题。