5e46901ffc
Adds a `collectCommentNodes` option on `ParseTemplateOptions` which will cause the returned `ParsedTemplate` to include an array of all html comments found in the template. PR Close #41251
48 lines
1.8 KiB
TypeScript
48 lines
1.8 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {ParseSourceSpan} from '../../../src/parse_util';
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import {Comment} from '../../../src/render3/r3_ast';
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import {parseTemplate} from '../../../src/render3/view/template';
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describe('collectCommentNodes', () => {
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it('should include an array of HTML comment nodes on the returned R3 AST', () => {
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const html = `
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<!-- eslint-disable-next-line -->
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<div *ngFor="let item of items">
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{{item.name}}
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</div>
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<div>
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<p>
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<!-- some nested comment -->
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<span>Text</span>
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</p>
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</div>
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`;
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const templateNoCommentsOption = parseTemplate(html, '', {});
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expect(templateNoCommentsOption.commentNodes).toBeUndefined();
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const templateCommentsOptionDisabled = parseTemplate(html, '', {collectCommentNodes: false});
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expect(templateCommentsOptionDisabled.commentNodes).toBeUndefined();
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const templateCommentsOptionEnabled = parseTemplate(html, '', {collectCommentNodes: true});
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expect(templateCommentsOptionEnabled.commentNodes!.length).toEqual(2);
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expect(templateCommentsOptionEnabled.commentNodes![0]).toBeInstanceOf(Comment);
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expect(templateCommentsOptionEnabled.commentNodes![0].value)
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.toEqual('eslint-disable-next-line');
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expect(templateCommentsOptionEnabled.commentNodes![0].sourceSpan)
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.toBeInstanceOf(ParseSourceSpan);
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expect(templateCommentsOptionEnabled.commentNodes![1]).toBeInstanceOf(Comment);
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expect(templateCommentsOptionEnabled.commentNodes![1].value).toEqual('some nested comment');
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expect(templateCommentsOptionEnabled.commentNodes![1].sourceSpan)
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.toBeInstanceOf(ParseSourceSpan);
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});
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});
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