Created
May 16, 2019 23:35
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Mock ActivatedRoute (with snapshot, queryParams and params), tested in Angular 7+
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import { Params } from '@angular/router'; | |
import { BehaviorSubject } from 'rxjs'; | |
export class MockActivatedRoute { | |
private innerTestParams?: any; | |
private subject?: BehaviorSubject<any> = new BehaviorSubject(this.testParams); | |
params = this.subject.asObservable(); | |
queryParams = this.subject.asObservable(); | |
constructor(params?: Params) { | |
if (params) { | |
this.testParams = params; | |
} else { | |
this.testParams = {}; | |
} | |
} | |
get testParams() { | |
return this.innerTestParams; | |
} | |
set testParams(params: {}) { | |
this.innerTestParams = params; | |
this.subject.next(params); | |
} | |
get snapshot() { | |
return { params: this.testParams, queryParams: this.testParams }; | |
} | |
} |
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// details were omitted | |
// Import the mock class | |
import { MockActivatedRoute } from './mock-active-router'; | |
describe('MyComponent', () => { | |
let component: MyComponent; | |
let fixture: ComponentFixture<MyComponent>; | |
let activatedRouteStub: MockActivatedRoute; | |
beforeEach(async(() => { | |
activatedRouteStub = new MockActivatedRoute(); | |
TestBed.configureTestingModule({ | |
declarations: [MyComponent], | |
providers: [ | |
{ provide: ActivatedRoute, useValue: activatedRouteStub } | |
] | |
}).compileComponents(); | |
})); | |
it('should change params', () => { | |
expect(component.myparam).toBeUndefined(); | |
expect(component.paramTwo).toBeUndefined(); | |
activatedRouteStub.testParams = { | |
myparam: 'value', | |
paramTwo: 1 | |
}; | |
fixture.detectChanges(); | |
expect(component.myparam).toEqual('value'); | |
expect(component.paramTwo).toEqual(1); | |
}); |
💯
Thank you! Helpful
Hello,
Could you please provide us with the license for the above code?
Thank you!
Thanks, super Helpful
Gracias!!
You just ended my 3 hour descent into madness. Thank you <3
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