angular-cn/packages/language-service/ivy/test/legacy/daignostic_spec.ts

42 lines
1.4 KiB
TypeScript

/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {LanguageService} from '../../language_service';
import {MockService, setup, TEST_TEMPLATE} from './mock_host';
describe('getSemanticDiagnostics', () => {
let service: MockService;
let ngLS: LanguageService;
beforeAll(() => {
const {project, service: _service, tsLS} = setup();
service = _service;
ngLS = new LanguageService(project, tsLS);
});
beforeEach(() => {
service.reset();
});
it('should retrieve external template from latest snapshot', () => {
// This test is to make sure we are reading from snapshot instead of disk
// if content from snapshot is newer. It also makes sure the internal cache
// of the resource loader is invalidated on content change.
service.overwrite(TEST_TEMPLATE, `{{ foo }}`);
const d1 = ngLS.getSemanticDiagnostics(TEST_TEMPLATE);
expect(d1.length).toBe(1);
expect(d1[0].messageText).toBe(`Property 'foo' does not exist on type 'TemplateReference'.`);
service.overwrite(TEST_TEMPLATE, `{{ bar }}`);
const d2 = ngLS.getSemanticDiagnostics(TEST_TEMPLATE);
expect(d2.length).toBe(1);
expect(d2[0].messageText).toBe(`Property 'bar' does not exist on type 'TemplateReference'.`);
});
});