Unit Tests

Simple Class

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import {User} from './user';
let user: User = {
    id: 'dtrump',
    firstName: 'Jean',
    lastName: 'Bambois',
    university: 'Univesity of Toronto',
    title: 'Assistant professor of English Literature',
    avatar:'assets/img/a5.jpg',
    lang: 'en'
};


describe('User', () => {
    describe('user constructor', () => {
        it('should create user with correct fields', () => {
            expect(user.id).toBe('dtrump');
            expect(user.firstName).toBe('Jean');
            expect(user.lastName).toBe('Bambois');
            expect(user.university).toBe('Univesity of Toronto');
            expect(user.title).toBe('Assistant professor of English Literature');
            expect(user.avatar).toBe('assets/img/a5.jpg');
            expect(user.lang).toBe('en');
        });
    });
});

Simple Component

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import {TestBed, inject} from '@angular/core/testing';
import {EvaluationsListComponent} from './evaluations-list.component';
import {Evaluation} from '../../evaluation/model/evaluation';
describe('EvaluationsListComponent', () => {
    beforeEach(() => TestBed.configureTestingModule({
        providers: [
            EvaluationsListComponent
        ]
    }));

    it('should be initiale correctly', inject([EvaluationsListComponent], (component: EvaluationsListComponent) => {
        expect(component.evaluations.length).toBe(0);
        expect(component.selectedEvaluation).toBeUndefined();
    }));

    describe('hasEvaluations method', () => {
        it('should return false by default', inject([EvaluationsListComponent], (component: EvaluationsListComponent) => {
            expect(component.hasEvaluations()).toBeFalsy();
        }));

        it('should return true when evaluations is not empty', inject([EvaluationsListComponent], (component: EvaluationsListComponent) => {
            component.evaluations = [new Evaluation({id: 'ev1'})];
            expect(component.hasEvaluations()).toBeTruthy();
        }));
    });

    describe('isSelected method', () => {
        it('should return false id evaluation is not selected', inject([EvaluationsListComponent], (component: EvaluationsListComponent) => {
            expect(component.isSelected(new Evaluation({id: 'ev1'}))).toBeFalsy();
        }));

        it('should return true when evaluations is not empty', inject([EvaluationsListComponent], (component: EvaluationsListComponent) => {
            let evaluation = new Evaluation({id: 'ev1'});
            component.selectedEvaluation = evaluation;
            expect(component.isSelected(evaluation)).toBeTruthy();
        }));
    });
});