import { HttpClientTestingModule } from '@angular/common/http/testing';
import { ComponentFixture, TestBed } from '@angular/core/testing';
import { AppComponent } from './app.component';
import { LoadService } from './load.service';

describe('AppComponent', () => {
    let fixture: ComponentFixture<AppComponent>;
    let app: AppComponent;

    beforeEach(async () => {
        await TestBed.configureTestingModule({
            declarations: [AppComponent],
            providers: [LoadService],
            imports: [HttpClientTestingModule]
        }).compileComponents();

        fixture = TestBed.createComponent(AppComponent);
        app = fixture.componentInstance;
    });

    it('should check the title', () => {
        expect(app.title).toBe('Number Cruncher');
    });

    it('should check initial total/average', () => {
        expect(app.total).toBe(0.0);
        expect(app.average).toBe(0.0);
    });

    it('should check that the total/average is reset to 0.0', () => {
        app.total = 1;
        app.average = 1;
        app.clearText();
        expect(app.total).toBe(0);
        expect(app.average).toBe(0);
    });

    it('should ensure parsing occurs properly for decimals', () => {
        app.parse('test1 1.1\ntest2 1.2');
        expect(app.total).toBe(2.3);
        expect(app.average).toBe(1.15);
    });

    it('should ensure parsing occurs properly for h:mm format', () => {
        app.parse('test 1 1:06\ntest 2 1:12');
        expect(app.total).toBe(2.3);
        expect(app.average).toBe(1.15);
    });

    it('should handle parsing empty text', () => {
        app.parse('');
        expect(app.total).toBe(0);
        expect(app.average).toBe(0);
    });

    it('should handle loading empty url', () => {
        app.loadInput('');
        expect(app.total).toBe(0);
        expect(app.average).toBe(0);
    });
});