angular/aio/src/app/custom-elements/lazy-custom-element.component.spec.ts
2018-05-29 18:00:34 -04:00

68 lines
2.4 KiB
TypeScript

import { ComponentFixture, TestBed } from '@angular/core/testing';
import { Logger } from 'app/shared/logger.service';
import { MockLogger } from 'testing/logger.service';
import { LazyCustomElementComponent } from './lazy-custom-element.component';
import { ElementsLoader } from './elements-loader';
describe('LazyCustomElementComponent', () => {
let mockElementsLoader: jasmine.SpyObj<ElementsLoader>;
let mockLogger: MockLogger;
let fixture: ComponentFixture<LazyCustomElementComponent>;
beforeEach(() => {
mockElementsLoader = jasmine.createSpyObj<ElementsLoader>('ElementsLoader', [
'loadContainingCustomElements',
'loadCustomElement',
]);
const injector = TestBed.configureTestingModule({
declarations: [ LazyCustomElementComponent ],
providers: [
{ provide: ElementsLoader, useValue: mockElementsLoader },
{ provide: Logger, useClass: MockLogger },
],
});
mockLogger = injector.get(Logger);
fixture = TestBed.createComponent(LazyCustomElementComponent);
});
it('should set the HTML content based on the selector', () => {
const elem = fixture.nativeElement;
expect(elem.innerHTML).toBe('');
fixture.componentInstance.selector = 'foo-bar';
fixture.detectChanges();
expect(elem.innerHTML).toBe('<foo-bar></foo-bar>');
});
it('should load the specified custom element', () => {
expect(mockElementsLoader.loadCustomElement).not.toHaveBeenCalled();
fixture.componentInstance.selector = 'foo-bar';
fixture.detectChanges();
expect(mockElementsLoader.loadCustomElement).toHaveBeenCalledWith('foo-bar');
});
it('should log an error (and abort) if the selector is empty', () => {
fixture.detectChanges();
expect(mockElementsLoader.loadCustomElement).not.toHaveBeenCalled();
expect(mockLogger.output.error).toEqual([[jasmine.any(Error)]]);
expect(mockLogger.output.error[0][0].message).toBe('Invalid selector for \'aio-lazy-ce\': ');
});
it('should log an error (and abort) if the selector is invalid', () => {
fixture.componentInstance.selector = 'foo-bar><script></script><foo-bar';
fixture.detectChanges();
expect(mockElementsLoader.loadCustomElement).not.toHaveBeenCalled();
expect(mockLogger.output.error).toEqual([[jasmine.any(Error)]]);
expect(mockLogger.output.error[0][0].message).toBe(
'Invalid selector for \'aio-lazy-ce\': foo-bar><script></script><foo-bar');
});
});