angular/adev/test-main.ts

import {ErrorHandler, NgModule, provideExperimentalZonelessChangeDetection} from '@angular/core';
import {TestBed} from '@angular/core/testing';
import {
  BrowserDynamicTestingModule,
  platformBrowserDynamicTesting,
} from '@angular/platform-browser-dynamic/testing';

@NgModule({
  providers: [
    provideExperimentalZonelessChangeDetection(),
    {
      provide: ErrorHandler,
      useValue: {
        handleError: (e: any) => {
          throw e;
        },
      },
    },
  ],
})
export class TestModule {}

TestBed.initTestEnvironment(
  [BrowserDynamicTestingModule, TestModule],
  platformBrowserDynamicTesting(),
);