Router test results in `Unexpected value '[object Object]' exported by the module 'MockOfErrorRoutingModule'`

I tried to follow the example here

however, it doesn’t work on my end, even after I simplified the component to the simplest form with Router:

Simplified code snippet as follows:

html:

<div></div>

component:

import { Component, OnInit } from '@angular/core';
import { Router } from '@angular/router';

@Component({
    selector: 'app-test',
    templateUrl: './test.component.html',
    styleUrls: ['./test.component.scss'],
})
export class TestComponent implements OnInit {
    constructor(private route: Router) {}

    ngOnInit(): void {
        console.log(this.route.url);
    }
}

spec:

import { Shallow } from 'shallow-render';

import { TestModule } from 'app/test.module';
import { TestComponent } from './test.component';

fdescribe('TestComponent', () => {
    let shallow: Shallow<TestComponent>;

    beforeEach(() => {
        shallow = new Shallow(TestComponent, TestModule);
    });

    it('should render page', async () => {
        const { find } = await shallow.render();
        expect(find('div')).toBeTruthy();
    });
});

i’m using "shallow-render": "^8.0.4", and do have the following line in test.ts:

const routes: Routes = [
    { path: '**', component: class DummyComponent {} },
];
Shallow.neverMock(HAMMER_GESTURE_CONFIG)
    .alwaysProvide(SomeService)
    .alwaysReplaceModule(RouterModule, RouterTestingModule.withRoutes(routes));

error:

	Error: Unexpected value '[object Object]' exported by the module 'MockOfErrorRoutingModule'
	error properties: Object({ ngSyntaxError: true })
	    at syntaxError (http://localhost:9876/_karma_webpack_/vendor.js:36465:17)
	    at http://localhost:9876/_karma_webpack_/vendor.js:52693:40
	    at <Jasmine>
	    at CompileMetadataResolver.push../node_modules/@angular/compiler/fesm5/compiler.js.CompileMetadataResolver.getNgModuleMetadata (http://localhost:9876/_karma_webpack_/vendor.js:52691:49)
	    at CompileMetadataResolver.push../node_modules/@angular/compiler/fesm5/compiler.js.CompileMetadataResolver.getNgModuleSummary (http://localhost:9876/_karma_webpack_/vendor.js:52589:35)
	    at http://localhost:9876/_karma_webpack_/vendor.js:52676:55
	    at <Jasmine>
	    at CompileMetadataResolver.push../node_modules/@angular/compiler/fesm5/compiler.js.CompileMetadataResolver.getNgModuleMetadata (http://localhost:9876/_karma_webpack_/vendor.js:52654:49)
	    at JitCompiler.push../node_modules/@angular/compiler/fesm5/compiler.js.JitCompiler._loadModules (http://localhost:9876/_karma_webpack_/vendor.js:60043:51)
	    at JitCompiler.push../node_modules/@angular/compiler/fesm5/compiler.js.JitCompiler._compileModuleAndAllComponents (http://localhost:9876/_karma_webpack_/vendor.js:60031:36)
HeadlessChrome 74.0.3729 (Mac OS X 10.14.2)

[getsaf]

Looks like you found a legit bug in shallow-render. Glad you reported it, I have a PR up that should fix it. @kreatemore want to give that PR a review?

[getsaf]

[deleted due to inaccuracies]