Angular 如何使用jasmine在角度组件中单击时触发ngClass更改
单击似乎没有被触发,并且在我尝试单击的按钮上没有将ngClass更改为活动 -- HTML:Angular 如何使用jasmine在角度组件中单击时触发ngClass更改,angular,jasmine,components,karma-runner,Angular,Jasmine,Components,Karma Runner,单击似乎没有被触发,并且在我尝试单击的按钮上没有将ngClass更改为活动 -- HTML: {{button.displayTxt}} 组成部分: export class AdmitOneBtnGroup { @Input() public btnDisplayText: string; @Input() public id: string; @Output() public clickEvent = new EventEmitter(); @Input(
{{button.displayTxt}}
组成部分:
export class AdmitOneBtnGroup {
@Input() public btnDisplayText: string;
@Input() public id: string;
@Output() public clickEvent = new EventEmitter();
@Input() public buttons: Array<ButtonGroupButton>; // Should be array of objects
public onClick($event, btnIndx) {
this.buttons.forEach((button, currentIndx) => {
button.isActive = (currentIndx === btnIndx);
});
this.clickEvent.emit(btnIndx);
}
};
export interface ButtonGroupButton {
isActive: boolean,
displayTxt: string,
}
导出类admitonebtgroup{
@Input()公共btnDisplayText:string;
@Input()公共id:string;
@Output()public clickEvent=new EventEmitter();
@Input()公共按钮:数组;//应该是对象数组
公共onClick($event,btnIndx){
this.buttons.forEach((按钮,currentIndx)=>{
button.isActive=(currentIndx==btnIndx);
});
this.clickEvent.emit(btnIndx);
}
};
导出接口按钮组按钮{
isActive:布尔值,
displayTxt:string,
}
测试:
let component: AdmitOneBtnGroup;
let fixture: ComponentFixture<AdmitOneBtnGroup>;
const testData: Array<ButtonGroupButton> = [
{
displayTxt: "abc",
isActive: true,
},
{
displayTxt: "def",
isActive: false,
},
{
displayTxt: "ghi",
isActive: false,
},
]
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [AdmitOneBtnGroup],
}).compileComponents()
}));
beforeEach(() => {
fixture = TestBed.createComponent(AdmitOneBtnGroup);
component = fixture.componentInstance;
component.buttons = testData;
component.id = 'button-group'
fixture.detectChanges();
});
it('#AdmitOneBtnGroupComponent button click should activate new button', async(() => {
spyOn(component, 'onClick');
const btn: HTMLElement = fixture.debugElement.nativeElement.querySelector('#btn-group-btn-1')
const clickEvent = new Event('click');
btn.dispatchEvent(clickEvent)
fixture.detectChanges();
fixture.whenStable().then(() => {
expect(btn.getAttribute('class')).toContain("active");
})
}));
let组件:admitonebtgroup;
let夹具:组件夹具;
常量testData:数组=[
{
显示文本:“abc”,
是的,
},
{
displayTxt:“def”,
I:错,
},
{
displayTxt:“ghi”,
I:错,
},
]
beforeach(异步(()=>{
TestBed.configureTestingModule({
声明:[AdmitOneBtnGroup],
}).compileComponents()
}));
在每个之前(()=>{
fixture=TestBed.createComponent(AdmitOneBtnGroup);
组件=fixture.componentInstance;
component.buttons=testData;
component.id='按钮组'
fixture.detectChanges();
});
它(“#admitonebtgroupcomponent按钮单击应激活新按钮”,异步(()=>{
spyOn(组件“onClick”);
常量btn:HTMLElement=fixture.debugElement.nativeElement.querySelector(“#btn-group-btn-1”)
const clickEvent=新事件(“单击”);
btn.dispatchEvent(点击事件)
fixture.detectChanges();
fixture.whenStable()然后(()=>{
expect(btn.getAttribute('class')).toContain(“活动”);
})
}));
测试应该单击第二个按钮并将活动类添加到其中,但活动类仍保留在第一个按钮上
我在上面有一个事件,上面写着expect(component.onClick).tohavebeencall();结果为真,因此我不确定单击是否没有被触发,或者只是ngClass没有被更改。您正在监视将按钮的isActive属性设置为真的函数:
spyOn(component, 'onClick');
当您监视函数时,除非将.and.callThrough()添加到spyOn函数的末尾,否则不会调用该函数。如果你除掉这个间谍,我希望它能起作用
或者,它可以是:
spyOn(component, 'onClick').and.callThrough();
…但我不知道你为什么要监视这个函数
spyOn(component, 'onClick').and.callThrough();