51 lines
1.4 KiB
TypeScript
51 lines
1.4 KiB
TypeScript
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/**
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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 {ɵgetDOM as getDOM} from '@angular/common';
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import {ServerStylesHost} from '@angular/platform-server/src/styles_host';
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(function() {
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if (getDOM().supportsDOMEvents()) return; // NODE only
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describe('ServerStylesHost', () => {
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let ssh: ServerStylesHost;
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let documentHead: Element;
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beforeEach(() => {
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const doc = getDOM().createHtmlDocument();
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ssh = new ServerStylesHost(doc, '');
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documentHead = doc.head;
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doc.querySelector('title')?.remove();
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});
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it('should add existing styles', () => {
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ssh.addStyles(['a {};']);
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expect(documentHead.innerHTML).toEqual('<style>a {};</style>');
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});
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it('should add new styles to hosts', () => {
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ssh.addStyles(['a {};']);
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expect(documentHead.innerHTML).toEqual('<style>a {};</style>');
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});
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it('should add styles only once to hosts', () => {
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ssh.addStyles(['a {};']);
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ssh.addStyles(['a {};']);
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expect(documentHead.innerHTML).toEqual('<style>a {};</style>');
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});
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it('should remove style nodes on destroy', () => {
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ssh.addStyles(['a {};']);
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expect(documentHead.innerHTML).toEqual('<style>a {};</style>');
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ssh.ngOnDestroy();
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expect(documentHead.innerHTML).toEqual('');
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});
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});
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})();
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