627cecdfe2
Prior to this fix if a root component was instantiated it create host bindings, but never render them once update mode ran unless one or more slot-allocated bindings were issued. Since styling in Ivy does not make use of LView slots, the host bindings function never ran on the root component. This fix ensures that the `hostBindings` function does run for a root component and also renders the schedlued styling instructions when executed. Jira Issue: FW-1062 PR Close #28664
43 lines
1.6 KiB
TypeScript
43 lines
1.6 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 {Component, HostBinding} from '@angular/core';
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import {TestBed} from '@angular/core/testing';
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import {expect} from '@angular/platform-browser/testing/src/matchers';
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import {onlyInIvy} from '@angular/private/testing';
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describe('acceptance integration tests', () => {
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onlyInIvy('[style] and [class] bindings are a new feature')
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.it('should render host bindings on the root component', () => {
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@Component({template: '...'})
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class MyApp {
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@HostBinding('style') public myStylesExp = {};
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@HostBinding('class') public myClassesExp = {};
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}
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TestBed.configureTestingModule({declarations: [MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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const element = fixture.nativeElement;
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fixture.detectChanges();
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const component = fixture.componentInstance;
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component.myStylesExp = {width: '100px'};
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component.myClassesExp = 'foo';
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fixture.detectChanges();
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expect(element.style['width']).toEqual('100px');
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expect(element.classList.contains('foo')).toBeTruthy();
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component.myStylesExp = {width: '200px'};
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component.myClassesExp = 'bar';
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fixture.detectChanges();
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expect(element.style['width']).toEqual('200px');
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expect(element.classList.contains('foo')).toBeFalsy();
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expect(element.classList.contains('bar')).toBeTruthy();
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});
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}); |