Angular 4 - Failed: Can't resolve all parameters for ActivatedRoute: (?, ?, ?, ?, ?, ?, ?, ?)

Question

I have referred the following link to get the answers, but I couldn't find any working solution for my scenario. Error: (SystemJS) Can't resolve all parameters for ActivatedRoute: (?, ?, ?, ?, ?, ?, ?, ?)

Therefore, I have been trying to remove the Activated Route from the providers and still the test bed is not passing. It shows

Error: No provider for ActivatedRoute!

So here is my code, I want to run my test bed in the angular application which is using Jasmine.

import { ActivatedRoute } from '@angular/router';
import { async, ComponentFixture, TestBed } from '@angular/core/testing';
import { RouterModule, Routes } from '@angular/router';
import { RouterTestingModule } from '@angular/router/testing';

describe('SomeComponent', () => {
  let component: SomeComponent;
  let fixture: ComponentFixture<SomeComponent>;

  beforeEach(async(() => {
    TestBed.configureTestingModule({ 
      imports: [ RouterModule, RouterTestingModule ],
      declarations: [ SomeComponent ],
      providers: [ ActivatedRoute ],
    })
    .compileComponents();
  }));

  beforeEach(() => {
    fixture = TestBed.createComponent(SomeComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });
});

Error getting

Coating

ActivatedRoute is one of the providers already defined by the RouterModule, you shouldn't include it again. Also note that there is a RouterTestingModule that may be more appropriate for your needs. – Reorganize

Answer 1

You want to inject a fake ActivatedRoute to your component, since you create it yourself in the test, and the router thus doesn't create it for you and inject an ActivatedRoute. So you can use something like this:

describe('SomeComponent', () => {

  const fakeActivatedRoute = {
    snapshot: { data: { ... } }
  } as ActivatedRoute;

  beforeEach(async(() => {
    TestBed.configureTestingModule({ 
      imports: [ RouterTestingModule ],
      declarations: [ SomeComponent ],
      providers: [ {provide: ActivatedRoute, useValue: fakeActivatedRoute} ],
    })
    .compileComponents();
  }));
});

Storz

Thing is, how do you populate the snapshot object so it works? – Lukasz

Why do I HAVE to fake it? Is there any example on the internet where I actually simulate reading URLs? – Usherette

This answer brought me the solution: Still in Angular 14: I added to the imports RouterTestingModule (there was no need to add {provide: ActivatedRoute, useValue: fakeActivatedRoute}) – Irreligion

Answer 2

Here's a solution for angular 7

{
    provide: ActivatedRoute,
    useValue: {
        snapshot: {
            paramMap: {
                get(): string {
                    return '123';
                },
            },
        },
    },
},

Flatfooted

Answer 3

I resolved this just by Adding RouterTestingModule to imports instead of adding ActivatedRoute to Providers

Snort

Pay attention to these bold words. – Interurban

Answer 4

{
  provide: ActivatedRoute,
  useValue: {
    snapshot: {
      queryParamMap: {
        get(): number {
          return 6;
        }
      }
    }
  }
}

Nacreous

Answer 5

Remove ActivatedRoute, this don't require testing

Rubdown