Previously, an expansion case could only start with an alpha numeric character. This commit fixes this by allowing an expansion case to start with any character except `}`. The [ICU spec](http://userguide.icu-project.org/formatparse/messages) is pretty vague: > Use a "select" argument to select sub-messages via a fixed set of keywords. It does not specify what can be a "keyword" but from looking at the surrounding syntax it appears that it can indeed be any string that does not contain a `}` character. Closes #31586 PR Close #36123
		
			
				
	
	
		
			544 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			544 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
/**
 | 
						|
 * @license
 | 
						|
 * Copyright Google Inc. 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 * as html from '../../src/ml_parser/ast';
 | 
						|
import {HtmlParser, ParseTreeResult, TreeError} from '../../src/ml_parser/html_parser';
 | 
						|
import {TokenType} from '../../src/ml_parser/lexer';
 | 
						|
import {ParseError} from '../../src/parse_util';
 | 
						|
 | 
						|
import {humanizeDom, humanizeDomSourceSpans, humanizeLineColumn} from './ast_spec_utils';
 | 
						|
 | 
						|
{
 | 
						|
  describe('HtmlParser', () => {
 | 
						|
    let parser: HtmlParser;
 | 
						|
 | 
						|
    beforeEach(() => { parser = new HtmlParser(); });
 | 
						|
 | 
						|
    describe('parse', () => {
 | 
						|
      describe('text nodes', () => {
 | 
						|
        it('should parse root level text nodes', () => {
 | 
						|
          expect(humanizeDom(parser.parse('a', 'TestComp'))).toEqual([[html.Text, 'a', 0]]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse text nodes inside regular elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<div>a</div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'div', 0], [html.Text, 'a', 1]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse text nodes inside <ng-template> elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<ng-template>a</ng-template>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'ng-template', 0], [html.Text, 'a', 1]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse CDATA', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<![CDATA[text]]>', 'TestComp'))).toEqual([
 | 
						|
            [html.Text, 'text', 0]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
      });
 | 
						|
 | 
						|
      describe('elements', () => {
 | 
						|
        it('should parse root level elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<div></div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'div', 0]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse elements inside of regular elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<div><span></span></div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'div', 0], [html.Element, 'span', 1]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse elements inside  <ng-template> elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<ng-template><span></span></ng-template>', 'TestComp')))
 | 
						|
              .toEqual([[html.Element, 'ng-template', 0], [html.Element, 'span', 1]]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support void elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<link rel="author license" href="/about">', 'TestComp')))
 | 
						|
              .toEqual([
 | 
						|
                [html.Element, 'link', 0],
 | 
						|
                [html.Attribute, 'rel', 'author license'],
 | 
						|
                [html.Attribute, 'href', '/about'],
 | 
						|
              ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should not error on void elements from HTML5 spec',
 | 
						|
           () => {  // http://www.w3.org/TR/html-markup/syntax.html#syntax-elements without:
 | 
						|
             // <base> - it can be present in head only
 | 
						|
             // <meta> - it can be present in head only
 | 
						|
             // <command> - obsolete
 | 
						|
             // <keygen> - obsolete
 | 
						|
             ['<map><area></map>', '<div><br></div>', '<colgroup><col></colgroup>',
 | 
						|
              '<div><embed></div>', '<div><hr></div>', '<div><img></div>', '<div><input></div>',
 | 
						|
              '<object><param>/<object>', '<audio><source></audio>', '<audio><track></audio>',
 | 
						|
              '<p><wbr></p>',
 | 
						|
             ].forEach((html) => { expect(parser.parse(html, 'TestComp').errors).toEqual([]); });
 | 
						|
           });
 | 
						|
 | 
						|
        it('should close void elements on text nodes', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<p>before<br>after</p>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'p', 0],
 | 
						|
            [html.Text, 'before', 1],
 | 
						|
            [html.Element, 'br', 1],
 | 
						|
            [html.Text, 'after', 1],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support optional end tags', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<div><p>1<p>2</div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'div', 0],
 | 
						|
            [html.Element, 'p', 1],
 | 
						|
            [html.Text, '1', 2],
 | 
						|
            [html.Element, 'p', 1],
 | 
						|
            [html.Text, '2', 2],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support nested elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<ul><li><ul><li></li></ul></li></ul>', 'TestComp')))
 | 
						|
              .toEqual([
 | 
						|
                [html.Element, 'ul', 0],
 | 
						|
                [html.Element, 'li', 1],
 | 
						|
                [html.Element, 'ul', 2],
 | 
						|
                [html.Element, 'li', 3],
 | 
						|
              ]);
 | 
						|
        });
 | 
						|
 | 
						|
        /**
 | 
						|
         * Certain elements (like <tr> or <col>) require parent elements of a certain type (ex. <tr>
 | 
						|
         * can only be inside <tbody> / <thead>). The Angular HTML parser doesn't validate those
 | 
						|
         * HTML compliancy rules as "problematic" elements can be projected - in such case HTML (as
 | 
						|
         * written in an Angular template) might be "invalid" (spec-wise) but the resulting DOM will
 | 
						|
         * still be correct.
 | 
						|
         */
 | 
						|
        it('should not wraps elements in a required parent', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<div><tr></tr></div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'div', 0],
 | 
						|
            [html.Element, 'tr', 1],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support explicit namespace', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<myns:div></myns:div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, ':myns:div', 0]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support implicit namespace', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<svg></svg>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, ':svg:svg', 0]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should propagate the namespace', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<myns:div><p></p></myns:div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, ':myns:div', 0],
 | 
						|
            [html.Element, ':myns:p', 1],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should match closing tags case sensitive', () => {
 | 
						|
          const errors = parser.parse('<DiV><P></p></dIv>', 'TestComp').errors;
 | 
						|
          expect(errors.length).toEqual(2);
 | 
						|
          expect(humanizeErrors(errors)).toEqual([
 | 
						|
            [
 | 
						|
              'p',
 | 
						|
              'Unexpected closing tag "p". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags',
 | 
						|
              '0:8'
 | 
						|
            ],
 | 
						|
            [
 | 
						|
              'dIv',
 | 
						|
              'Unexpected closing tag "dIv". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags',
 | 
						|
              '0:12'
 | 
						|
            ],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support self closing void elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<input />', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'input', 0]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support self closing foreign elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<math />', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, ':math:math', 0]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should ignore LF immediately after textarea, pre and listing', () => {
 | 
						|
          expect(humanizeDom(parser.parse(
 | 
						|
                     '<p>\n</p><textarea>\n</textarea><pre>\n\n</pre><listing>\n\n</listing>',
 | 
						|
                     'TestComp')))
 | 
						|
              .toEqual([
 | 
						|
                [html.Element, 'p', 0],
 | 
						|
                [html.Text, '\n', 1],
 | 
						|
                [html.Element, 'textarea', 0],
 | 
						|
                [html.Element, 'pre', 0],
 | 
						|
                [html.Text, '\n', 1],
 | 
						|
                [html.Element, 'listing', 0],
 | 
						|
                [html.Text, '\n', 1],
 | 
						|
              ]);
 | 
						|
        });
 | 
						|
 | 
						|
      });
 | 
						|
 | 
						|
      describe('attributes', () => {
 | 
						|
        it('should parse attributes on regular elements case sensitive', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<div kEy="v" key2=v2></div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'div', 0],
 | 
						|
            [html.Attribute, 'kEy', 'v'],
 | 
						|
            [html.Attribute, 'key2', 'v2'],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse attributes without values', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<div k></div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, 'div', 0],
 | 
						|
            [html.Attribute, 'k', ''],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse attributes on svg elements case sensitive', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<svg viewBox="0"></svg>', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, ':svg:svg', 0],
 | 
						|
            [html.Attribute, 'viewBox', '0'],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse attributes on <ng-template> elements', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<ng-template k="v"></ng-template>', 'TestComp')))
 | 
						|
              .toEqual([
 | 
						|
                [html.Element, 'ng-template', 0],
 | 
						|
                [html.Attribute, 'k', 'v'],
 | 
						|
              ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support namespace', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<svg:use xlink:href="Port" />', 'TestComp'))).toEqual([
 | 
						|
            [html.Element, ':svg:use', 0],
 | 
						|
            [html.Attribute, ':xlink:href', 'Port'],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
      });
 | 
						|
 | 
						|
      describe('comments', () => {
 | 
						|
        it('should preserve comments', () => {
 | 
						|
          expect(humanizeDom(parser.parse('<!-- comment --><div></div>', 'TestComp'))).toEqual([
 | 
						|
            [html.Comment, 'comment', 0],
 | 
						|
            [html.Element, 'div', 0],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
      });
 | 
						|
 | 
						|
      describe('expansion forms', () => {
 | 
						|
        it('should parse out expansion forms', () => {
 | 
						|
          const parsed = parser.parse(
 | 
						|
              `<div>before{messages.length, plural, =0 {You have <b>no</b> messages} =1 {One {{message}}}}after</div>`,
 | 
						|
              'TestComp', {tokenizeExpansionForms: true});
 | 
						|
 | 
						|
          expect(humanizeDom(parsed)).toEqual([
 | 
						|
            [html.Element, 'div', 0],
 | 
						|
            [html.Text, 'before', 1],
 | 
						|
            [html.Expansion, 'messages.length', 'plural', 1],
 | 
						|
            [html.ExpansionCase, '=0', 2],
 | 
						|
            [html.ExpansionCase, '=1', 2],
 | 
						|
            [html.Text, 'after', 1],
 | 
						|
          ]);
 | 
						|
          const cases = (<any>parsed.rootNodes[0]).children[1].cases;
 | 
						|
 | 
						|
          expect(humanizeDom(new ParseTreeResult(cases[0].expression, []))).toEqual([
 | 
						|
            [html.Text, 'You have ', 0],
 | 
						|
            [html.Element, 'b', 0],
 | 
						|
            [html.Text, 'no', 1],
 | 
						|
            [html.Text, ' messages', 0],
 | 
						|
          ]);
 | 
						|
 | 
						|
          expect(humanizeDom(new ParseTreeResult(cases[1].expression, [
 | 
						|
          ]))).toEqual([[html.Text, 'One {{message}}', 0]]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse out expansion forms', () => {
 | 
						|
          const parsed = parser.parse(
 | 
						|
              `<div><span>{a, plural, =0 {b}}</span></div>`, 'TestComp',
 | 
						|
              {tokenizeExpansionForms: true});
 | 
						|
 | 
						|
          expect(humanizeDom(parsed)).toEqual([
 | 
						|
            [html.Element, 'div', 0],
 | 
						|
            [html.Element, 'span', 1],
 | 
						|
            [html.Expansion, 'a', 'plural', 2],
 | 
						|
            [html.ExpansionCase, '=0', 3],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should parse out nested expansion forms', () => {
 | 
						|
          const parsed = parser.parse(
 | 
						|
              `{messages.length, plural, =0 { {p.gender, select, male {m}} }}`, 'TestComp',
 | 
						|
              {tokenizeExpansionForms: true});
 | 
						|
          expect(humanizeDom(parsed)).toEqual([
 | 
						|
            [html.Expansion, 'messages.length', 'plural', 0],
 | 
						|
            [html.ExpansionCase, '=0', 1],
 | 
						|
          ]);
 | 
						|
 | 
						|
          const firstCase = (<any>parsed.rootNodes[0]).cases[0];
 | 
						|
 | 
						|
          expect(humanizeDom(new ParseTreeResult(firstCase.expression, []))).toEqual([
 | 
						|
            [html.Expansion, 'p.gender', 'select', 0],
 | 
						|
            [html.ExpansionCase, 'male', 1],
 | 
						|
            [html.Text, ' ', 0],
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should error when expansion form is not closed', () => {
 | 
						|
          const p = parser.parse(
 | 
						|
              `{messages.length, plural, =0 {one}`, 'TestComp', {tokenizeExpansionForms: true});
 | 
						|
          expect(humanizeErrors(p.errors)).toEqual([
 | 
						|
            [null, 'Invalid ICU message. Missing \'}\'.', '0:34']
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support ICU expressions with cases that contain numbers', () => {
 | 
						|
          const p = parser.parse(
 | 
						|
              `{sex, select, male {m} female {f} 0 {other}}`, 'TestComp',
 | 
						|
              {tokenizeExpansionForms: true});
 | 
						|
          expect(p.errors.length).toEqual(0);
 | 
						|
        });
 | 
						|
 | 
						|
        it(`should support ICU expressions with cases that contain any character except '}'`,
 | 
						|
           () => {
 | 
						|
             const p = parser.parse(
 | 
						|
                 `{a, select, b {foo} % bar {% bar}}`, 'TestComp', {tokenizeExpansionForms: true});
 | 
						|
             expect(p.errors.length).toEqual(0);
 | 
						|
           });
 | 
						|
 | 
						|
        it('should error when expansion case is not properly closed', () => {
 | 
						|
          const p = parser.parse(
 | 
						|
              `{a, select, b {foo} % { bar {% bar}}`, 'TestComp', {tokenizeExpansionForms: true});
 | 
						|
          expect(humanizeErrors(p.errors)).toEqual([
 | 
						|
            [
 | 
						|
              6,
 | 
						|
              'Unexpected character "EOF" (Do you have an unescaped "{" in your template? Use "{{ \'{\' }}") to escape it.)',
 | 
						|
              '0:36'
 | 
						|
            ],
 | 
						|
            [null, 'Invalid ICU message. Missing \'}\'.', '0:22']
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should error when expansion case is not closed', () => {
 | 
						|
          const p = parser.parse(
 | 
						|
              `{messages.length, plural, =0 {one`, 'TestComp', {tokenizeExpansionForms: true});
 | 
						|
          expect(humanizeErrors(p.errors)).toEqual([
 | 
						|
            [null, 'Invalid ICU message. Missing \'}\'.', '0:29']
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should error when invalid html in the case', () => {
 | 
						|
          const p = parser.parse(
 | 
						|
              `{messages.length, plural, =0 {<b/>}`, 'TestComp', {tokenizeExpansionForms: true});
 | 
						|
          expect(humanizeErrors(p.errors)).toEqual([
 | 
						|
            ['b', 'Only void and foreign elements can be self closed "b"', '0:30']
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
      });
 | 
						|
 | 
						|
      describe('source spans', () => {
 | 
						|
        it('should store the location', () => {
 | 
						|
          expect(humanizeDomSourceSpans(parser.parse(
 | 
						|
                     '<div [prop]="v1" (e)="do()" attr="v2" noValue>\na\n</div>', 'TestComp')))
 | 
						|
              .toEqual([
 | 
						|
                [html.Element, 'div', 0, '<div [prop]="v1" (e)="do()" attr="v2" noValue>'],
 | 
						|
                [html.Attribute, '[prop]', 'v1', '[prop]="v1"'],
 | 
						|
                [html.Attribute, '(e)', 'do()', '(e)="do()"'],
 | 
						|
                [html.Attribute, 'attr', 'v2', 'attr="v2"'],
 | 
						|
                [html.Attribute, 'noValue', '', 'noValue'],
 | 
						|
                [html.Text, '\na\n', 1, '\na\n'],
 | 
						|
              ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should set the start and end source spans', () => {
 | 
						|
          const node = <html.Element>parser.parse('<div>a</div>', 'TestComp').rootNodes[0];
 | 
						|
 | 
						|
          expect(node.startSourceSpan !.start.offset).toEqual(0);
 | 
						|
          expect(node.startSourceSpan !.end.offset).toEqual(5);
 | 
						|
 | 
						|
          expect(node.endSourceSpan !.start.offset).toEqual(6);
 | 
						|
          expect(node.endSourceSpan !.end.offset).toEqual(12);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should support expansion form', () => {
 | 
						|
          expect(humanizeDomSourceSpans(parser.parse(
 | 
						|
                     '<div>{count, plural, =0 {msg}}</div>', 'TestComp',
 | 
						|
                     {tokenizeExpansionForms: true})))
 | 
						|
              .toEqual([
 | 
						|
                [html.Element, 'div', 0, '<div>'],
 | 
						|
                [html.Expansion, 'count', 'plural', 1, '{count, plural, =0 {msg}}'],
 | 
						|
                [html.ExpansionCase, '=0', 2, '=0 {msg}'],
 | 
						|
              ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should not report a value span for an attribute without a value', () => {
 | 
						|
          const ast = parser.parse('<div bar></div>', 'TestComp');
 | 
						|
          expect((ast.rootNodes[0] as html.Element).attrs[0].valueSpan).toBeUndefined();
 | 
						|
        });
 | 
						|
 | 
						|
        it('should report a value span for an attribute with a value', () => {
 | 
						|
          const ast = parser.parse('<div bar="12"></div>', 'TestComp');
 | 
						|
          const attr = (ast.rootNodes[0] as html.Element).attrs[0];
 | 
						|
          expect(attr.valueSpan !.start.offset).toEqual(10);
 | 
						|
          expect(attr.valueSpan !.end.offset).toEqual(12);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should report a value span for an unquoted attribute value', () => {
 | 
						|
          const ast = parser.parse('<div bar=12></div>', 'TestComp');
 | 
						|
          const attr = (ast.rootNodes[0] as html.Element).attrs[0];
 | 
						|
          expect(attr.valueSpan !.start.offset).toEqual(9);
 | 
						|
          expect(attr.valueSpan !.end.offset).toEqual(11);
 | 
						|
        });
 | 
						|
      });
 | 
						|
 | 
						|
      describe('visitor', () => {
 | 
						|
        it('should visit text nodes', () => {
 | 
						|
          const result = humanizeDom(parser.parse('text', 'TestComp'));
 | 
						|
          expect(result).toEqual([[html.Text, 'text', 0]]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should visit element nodes', () => {
 | 
						|
          const result = humanizeDom(parser.parse('<div></div>', 'TestComp'));
 | 
						|
          expect(result).toEqual([[html.Element, 'div', 0]]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should visit attribute nodes', () => {
 | 
						|
          const result = humanizeDom(parser.parse('<div id="foo"></div>', 'TestComp'));
 | 
						|
          expect(result).toContain([html.Attribute, 'id', 'foo']);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should visit all nodes', () => {
 | 
						|
          const result =
 | 
						|
              parser.parse('<div id="foo"><span id="bar">a</span><span>b</span></div>', 'TestComp');
 | 
						|
          const accumulator: html.Node[] = [];
 | 
						|
          const visitor = new class {
 | 
						|
            visit(node: html.Node, context: any) { accumulator.push(node); }
 | 
						|
            visitElement(element: html.Element, context: any): any {
 | 
						|
              html.visitAll(this, element.attrs);
 | 
						|
              html.visitAll(this, element.children);
 | 
						|
            }
 | 
						|
            visitAttribute(attribute: html.Attribute, context: any): any {}
 | 
						|
            visitText(text: html.Text, context: any): any {}
 | 
						|
            visitComment(comment: html.Comment, context: any): any {}
 | 
						|
            visitExpansion(expansion: html.Expansion, context: any): any {
 | 
						|
              html.visitAll(this, expansion.cases);
 | 
						|
            }
 | 
						|
            visitExpansionCase(expansionCase: html.ExpansionCase, context: any): any {}
 | 
						|
          };
 | 
						|
 | 
						|
          html.visitAll(visitor, result.rootNodes);
 | 
						|
          expect(accumulator.map(n => n.constructor)).toEqual([
 | 
						|
            html.Element, html.Attribute, html.Element, html.Attribute, html.Text, html.Element,
 | 
						|
            html.Text
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should skip typed visit if visit() returns a truthy value', () => {
 | 
						|
          const visitor = new class {
 | 
						|
            visit(node: html.Node, context: any) { return true; }
 | 
						|
            visitElement(element: html.Element, context: any): any { throw Error('Unexpected'); }
 | 
						|
            visitAttribute(attribute: html.Attribute, context: any): any {
 | 
						|
              throw Error('Unexpected');
 | 
						|
            }
 | 
						|
            visitText(text: html.Text, context: any): any { throw Error('Unexpected'); }
 | 
						|
            visitComment(comment: html.Comment, context: any): any { throw Error('Unexpected'); }
 | 
						|
            visitExpansion(expansion: html.Expansion, context: any): any {
 | 
						|
              throw Error('Unexpected');
 | 
						|
            }
 | 
						|
            visitExpansionCase(expansionCase: html.ExpansionCase, context: any): any {
 | 
						|
              throw Error('Unexpected');
 | 
						|
            }
 | 
						|
          };
 | 
						|
          const result = parser.parse('<div id="foo"></div><div id="bar"></div>', 'TestComp');
 | 
						|
          const traversal = html.visitAll(visitor, result.rootNodes);
 | 
						|
          expect(traversal).toEqual([true, true]);
 | 
						|
        });
 | 
						|
      });
 | 
						|
 | 
						|
      describe('errors', () => {
 | 
						|
        it('should report unexpected closing tags', () => {
 | 
						|
          const errors = parser.parse('<div></p></div>', 'TestComp').errors;
 | 
						|
          expect(errors.length).toEqual(1);
 | 
						|
          expect(humanizeErrors(errors)).toEqual([[
 | 
						|
            'p',
 | 
						|
            'Unexpected closing tag "p". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags',
 | 
						|
            '0:5'
 | 
						|
          ]]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should report subsequent open tags without proper close tag', () => {
 | 
						|
          const errors = parser.parse('<div</div>', 'TestComp').errors;
 | 
						|
          expect(errors.length).toEqual(1);
 | 
						|
          expect(humanizeErrors(errors)).toEqual([[
 | 
						|
            'div',
 | 
						|
            'Unexpected closing tag "div". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags',
 | 
						|
            '0:4'
 | 
						|
          ]]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should report closing tag for void elements', () => {
 | 
						|
          const errors = parser.parse('<input></input>', 'TestComp').errors;
 | 
						|
          expect(errors.length).toEqual(1);
 | 
						|
          expect(humanizeErrors(errors)).toEqual([
 | 
						|
            ['input', 'Void elements do not have end tags "input"', '0:7']
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should report self closing html element', () => {
 | 
						|
          const errors = parser.parse('<p />', 'TestComp').errors;
 | 
						|
          expect(errors.length).toEqual(1);
 | 
						|
          expect(humanizeErrors(errors)).toEqual([
 | 
						|
            ['p', 'Only void and foreign elements can be self closed "p"', '0:0']
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should report self closing custom element', () => {
 | 
						|
          const errors = parser.parse('<my-cmp />', 'TestComp').errors;
 | 
						|
          expect(errors.length).toEqual(1);
 | 
						|
          expect(humanizeErrors(errors)).toEqual([
 | 
						|
            ['my-cmp', 'Only void and foreign elements can be self closed "my-cmp"', '0:0']
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
 | 
						|
        it('should also report lexer errors', () => {
 | 
						|
          const errors = parser.parse('<!-err--><div></p></div>', 'TestComp').errors;
 | 
						|
          expect(errors.length).toEqual(2);
 | 
						|
          expect(humanizeErrors(errors)).toEqual([
 | 
						|
            [TokenType.COMMENT_START, 'Unexpected character "e"', '0:3'],
 | 
						|
            [
 | 
						|
              'p',
 | 
						|
              'Unexpected closing tag "p". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags',
 | 
						|
              '0:14'
 | 
						|
            ]
 | 
						|
          ]);
 | 
						|
        });
 | 
						|
      });
 | 
						|
    });
 | 
						|
  });
 | 
						|
}
 | 
						|
 | 
						|
export function humanizeErrors(errors: ParseError[]): any[] {
 | 
						|
  return errors.map(e => {
 | 
						|
    if (e instanceof TreeError) {
 | 
						|
      // Parser errors
 | 
						|
      return [<any>e.elementName, e.msg, humanizeLineColumn(e.span.start)];
 | 
						|
    }
 | 
						|
    // Tokenizer errors
 | 
						|
    return [(<any>e).tokenType, e.msg, humanizeLineColumn(e.span.start)];
 | 
						|
  });
 | 
						|
}
 |