我正在使用Jasmine对Angular 5应用进行单元测试。我到了需要测试一个依赖于DomSanitizer
的函数的地步:
loadImage() {
this.image = this.sanitizer.bypassSecurityTrustStyle(`url(${this.assetUrl})`);
}
我确认此函数运行正常,这意味着DomSanitizer
已经在构造函数中,并且它的语法是正确的。
我的单元测试如下:
it('loads the Image', () => {
component.loadImage()
fixture.detectChanges();
expect(component.imageUrl).toBe('...');
});
此外,DomSanitizer
是TestBed
providers
:
beforeEach(async(() => {
TestBed.configureTestingModule({
imports: [
RouterTestingModule,
CommonModule
],
declarations: [
MyComponent
],
providers: [
DomSanitizer
],
schemas: [ NO_ERRORS_SCHEMA ]
})
.compileComponents();
}));
然而,Jasmine在对函数进行单元测试时会抛出此错误:
ERROR: 'Unhandled Promise rejection:', '_this.sanitizer.bypassSecurityTrustStyle is not a function', '; Zone:', 'angular', '; Task:', 'Promise.then', '; Value:', TypeError: _this.sanitizer.bypassSecurityTrustStyle is not a function
有什么想法吗?
谢谢!
答案 0 :(得分:0)
将其更改为BrowserModule而不是CommonModule,还可以省略DomSanitizer:
beforeEach(async(() => {
TestBed.configureTestingModule({
imports: [
RouterTestingModule,
BrowserModule
],
declarations: [
MyComponent
]
schemas: [ NO_ERRORS_SCHEMA ]
})
.compileComponents();
}));