警告：'The "slidestart" event cannot be bound because Hammer.JS is not loaded and no custom loader has been specified.'

Question

当运行单元测试

时，TFS 构建输出中出现此错误

Answer 1

我通过简单地在 test.ts

中添加一个导入解决了这个问题


import { getTestBed } from '@angular/core/testing';
import {
  BrowserDynamicTestingModule,
  platformBrowserDynamicTesting
} from '@angular/platform-browser-dynamic/testing';
import 'zone.js/dist/zone-testing';
**import 'hammerjs';**

declare const require: any;

// First, initialize the Angular testing environment.
getTestBed().initTestEnvironment(
  BrowserDynamicTestingModule,
  platformBrowserDynamicTesting()
);
// Then we find all the tests.
const context = require.context( './', true, /\.spec\.ts$/ );
// And load the modules.
context.keys().map( context );

Answer 2

添加以下提供商为我解决了这个问题：

...
import { HAMMER_LOADER } from '@angular/platform-browser';

beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [ ... ],
      imports: [ ... ],
      providers: [
        ...,
        { provide: HAMMER_LOADER, useValue: () => new Promise(() => {}) } ]
    })
    .compileComponents();
  }));

警告：'The "slidestart" event cannot be bound because Hammer.JS is not loaded and no custom loader has been specified.'

WARN: 'The "slidestart" event cannot be bound because Hammer.JS is not loaded and no custom loader has been specified.'

tfs

unit-testing

tfsbuild

angular