47 lines
1.4 KiB
TypeScript
47 lines
1.4 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. 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 {defineDirective} from '../../src/render3/index';
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import {bind, elementEnd, elementProperty, elementStart, loadDirective} from '../../src/render3/instructions';
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import {renderToHtml} from './render_util';
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describe('directive', () => {
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describe('host', () => {
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it('should support host bindings in directives', () => {
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let directiveInstance: Directive|undefined;
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class Directive {
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klass = 'foo';
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static ngDirectiveDef = defineDirective({
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type: Directive,
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factory: () => directiveInstance = new Directive,
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hostBindings: (directiveIndex: number, elementIndex: number) => {
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elementProperty(
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elementIndex, 'className', bind(loadDirective<Directive>(directiveIndex).klass));
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}
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});
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}
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function Template(ctx: any, cm: boolean) {
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if (cm) {
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elementStart(0, 'span', null, [Directive]);
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elementEnd();
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}
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}
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expect(renderToHtml(Template, {})).toEqual('<span class="foo"></span>');
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directiveInstance !.klass = 'bar';
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expect(renderToHtml(Template, {})).toEqual('<span class="bar"></span>');
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});
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});
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});
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