angular-docs-cn/modules/@angular/compiler/test/template_preparser_spec.ts

import {HtmlParser} from '@angular/compiler/src/html_parser';
import {PreparsedElement, PreparsedElementType, preparseElement} from '@angular/compiler/src/template_preparser';
import {afterEach, beforeEach, beforeEachProviders, ddescribe, describe, expect, iit, inject, it, xdescribe, xit} from '@angular/core/testing/testing_internal';

export function main() {
  describe('preparseElement', () => {
    var htmlParser: any /** TODO #9100 */;
    beforeEach(inject([HtmlParser], (_htmlParser: HtmlParser) => { htmlParser = _htmlParser; }));

    function preparse(html: string): PreparsedElement {
      return preparseElement(htmlParser.parse(html, 'TestComp').rootNodes[0]);
    }

    it('should detect script elements', inject([HtmlParser], (htmlParser: HtmlParser) => {
         expect(preparse('<script>').type).toBe(PreparsedElementType.SCRIPT);
       }));

    it('should detect style elements', inject([HtmlParser], (htmlParser: HtmlParser) => {
         expect(preparse('<style>').type).toBe(PreparsedElementType.STYLE);
       }));

    it('should detect stylesheet elements', inject([HtmlParser], (htmlParser: HtmlParser) => {
         expect(preparse('<link rel="stylesheet">').type).toBe(PreparsedElementType.STYLESHEET);
         expect(preparse('<link rel="stylesheet" href="someUrl">').hrefAttr).toEqual('someUrl');
         expect(preparse('<link rel="someRel">').type).toBe(PreparsedElementType.OTHER);
       }));

    it('should detect ng-content elements', inject([HtmlParser], (htmlParser: HtmlParser) => {
         expect(preparse('<ng-content>').type).toBe(PreparsedElementType.NG_CONTENT);
       }));

    it('should normalize ng-content.select attribute',
       inject([HtmlParser], (htmlParser: HtmlParser) => {
         expect(preparse('<ng-content>').selectAttr).toEqual('*');
         expect(preparse('<ng-content select>').selectAttr).toEqual('*');
         expect(preparse('<ng-content select="*">').selectAttr).toEqual('*');
       }));

    it('should extract ngProjectAs value', () => {
      expect(preparse('<p ngProjectAs="el[attr].class"></p>').projectAs).toEqual('el[attr].class');
    });
  });
}