Angular 4 - router.url unit testing

Question

How do I mock router.url in angular 4 unit testing?

I use router.url in ngOnint in my component but in my test the value for router.url is '/'

can you provide more details what are trying to do , from description it is not very clear what exactly you want to do. — pritesh agrawal, Sep 18 '17 at 05:18

score 17 · Answer 1 · answered Aug 27 '20 at 19:53

17

In Angular v9 Router.url is a readonly getter property. You can force the private property value to set the url property:

    const mockUrlTree = router.parseUrl('/heroes/captain-marvel');
    // @ts-ignore: force this private property value for testing.
    router.currentUrlTree = mockUrlTree;

answered Aug 27 '20 at 19:53

Rob

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40

This is the only solution that worked for me, when both, RouterTestingModule and router.url are used in unit tests – Alex Ryltsov Jan 15 '21 at 02:43
2

This answer needs more upvotes if you are using a later version of Angular then the other answers will not work. – PeterS Jan 26 '21 at 11:09

score 3 · Answer 2 · answered Sep 18 '17 at 06:43

3

you could use jasmine spyObj. In you TestBed:

providers:[
 {
 provide: Router,
 usevalue: jasmine.createSpyObj('Router',['methodOne','methodTwo]),
 },
],

in beforeEach:

router = fixture.debugElement.injector.get(Router);

in the test:

it('should...', ()=> {
 (router.methodOne as Spy).and.returnValue(whateverValue)// if you wanna mock the response
});

answered Sep 18 '17 at 06:43

kodeaben

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If it needs further explaining, please let me know :) – kodeaben Sep 18 '17 at 06:51

score -2 · Answer 3 · answered Oct 24 '19 at 00:56

-2

This sounds like a solution jasmine angular 4 unit test router.url

const router = TestBed.get(Router);
router.url = '/path/to/anything';
// now you can run your tested method:
component.ngOnint();

answered Oct 24 '19 at 00:56

Mohamed Farouk

1,089
5
10

2

I am getting an error `cannot assign to 'url' bacause its a constant property` – Mohit Khandelwal May 15 '20 at 12:56

Angular 4 - router.url unit testing

3 Answers3

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