我有一个名为' myPipe'的自定义管道。我正在接受管道' myPipe'在我的单元测试中无法找到错误。
请在我的.spec.ts
中建议导入和声明的内容这是我的.spec.ts
import { async, ComponentFixture, TestBed } from '@angular/core/testing';
import { By } from '@angular/platform-browser';
import { DebugElement } from '@angular/core';
import { MyComponent } from './main-page-carousel.component';
describe('CarouselComponent', () => {
let component: MyComponent ;
let fixture: ComponentFixture<MyComponent>;
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [ MyComponent ],
})
.compileComponents();
}));
beforeEach(() => {
fixture = TestBed.createComponent(MyComponent);
component = fixture.componentInstance;
fixture.detectChanges();
});
it('should create', () => {
expect(component).toBeTruthy();
});
});
谢谢!
答案 0 :(得分:42)
你应该可以这样做:
import { MyPipe } from 'here put your custom pipe path';
TestBed.configureTestingModule({
declarations: [ MyComponentUnderTesting, MyPipe ]
})
答案 1 :(得分:2)
我几乎遇到了相同的管道问题,在模板解析错误的情况下,您需要完成两个步骤-:
像开始一样导入所需的管道 “从'../your/pipe/location导入{{your_pipe_name}}“
将其添加到以下声明中: TestBed.configureTestingModule({声明:[your_pipe]});
快乐编码!!!
答案 2 :(得分:1)
我遇到了同样的问题,并通过添加以下&#34;模拟管道&#34;来修复它。我的规格:
import {Pipe, PipeTransform} from '@angular/core';
@Pipe({name: 'myPipe'})
class MockPipe implements PipeTransform {
transform(value: number): number {
// blah blah
return value;
}
}
然后你必须将MockPipe添加到TestBed configureTestingModule声明中:
TestBed.configureTestingModule({
declarations: [ MyComponentUnderTesting, MockPipe ]
})
答案 3 :(得分:0)
你应该开始像
这样的事情import { TestBed, async } from '@angular/core/testing';
import { MyPipe } from 'here put your custom pipe path';
describe('Pipe: MyPipe', () => {
it('create an instance', () => {
let pipe = new MyPipe();
expect(pipe).toBeTruthy();
});
});