converter/src/app/input-component-manager.ser...

72 lines
2.5 KiB
TypeScript

import {inject, TestBed} from '@angular/core/testing';
import {InputComponentManagerService} from './input-component-manager.service';
import {Step} from './step';
describe('InputComponentManagerService', () => {
beforeEach(() => {
TestBed.configureTestingModule({
providers: [InputComponentManagerService]
});
});
it('should be created', inject([InputComponentManagerService], (service: InputComponentManagerService) => {
expect(service).toBeTruthy();
}));
it('should create a component if requesting the first one',
inject([InputComponentManagerService], (service: InputComponentManagerService) => {
const firstStep: Step = service.getFirst();
expect(firstStep).toBeTruthy();
expect(service.getFirst()).toBe(firstStep);
expect(service.getAllComponents().length).toEqual(1);
})
);
it('must not add a null Step', inject([InputComponentManagerService], (service: InputComponentManagerService) => {
expect(() => service.register(null)).toThrowError();
expect(service.getAllComponents().length).toEqual(0);
}));
it('must not add an undefined Step', inject([InputComponentManagerService], (service: InputComponentManagerService) => {
expect(() => service.register(undefined)).toThrowError();
expect(service.getAllComponents().length).toEqual(0);
}));
it('should register new Steps', inject([InputComponentManagerService], (service: InputComponentManagerService) => {
service.register(new Step(99));
expect(service.getAllComponents().length).toEqual(1);
service.register(new Step(100));
expect(service.getAllComponents().length).toEqual(2);
}));
it('should return a new step if the next step doesn\'t exist',
inject([InputComponentManagerService], (service: InputComponentManagerService) => {
// arrange
const firstStep: Step = new Step(0);
service.register(firstStep);
// act
const nextStep: Step = service.getNext(firstStep);
// assert
expect(service.getAllComponents().length).toEqual(2);
expect(nextStep.index).toEqual(1);
})
);
it('should return the next step if requested', inject([InputComponentManagerService], (service: InputComponentManagerService) => {
// arrange
const firstStep: Step = new Step(0);
const nextStep: Step = new Step(1);
service.register(firstStep);
service.register(nextStep);
// act
const requestedStep: Step = service.getNext(firstStep);
// assert
expect(service.getAllComponents().length).toEqual(2);
expect(requestedStep).toEqual(nextStep);
}));
});