angular-docs-cn/packages/platform-browser/test/dom/dom_renderer_spec.ts

173 lines
5.7 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 {Component, Renderer2, ViewEncapsulation} from '@angular/core';
import {TestBed} from '@angular/core/testing';
import {By} from '@angular/platform-browser/src/dom/debug/by';
import {NAMESPACE_URIS} from '@angular/platform-browser/src/dom/dom_renderer';
import {browserDetection} from '@angular/platform-browser/testing/src/browser_util';
import {expect} from '@angular/platform-browser/testing/src/matchers';
{
describe('DefaultDomRendererV2', () => {
if (isNode) return;
let renderer: Renderer2;
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [
TestCmp, SomeApp, CmpEncapsulationEmulated, CmpEncapsulationNative, CmpEncapsulationNone,
CmpEncapsulationNative
]
});
renderer = TestBed.createComponent(TestCmp).componentInstance.renderer;
});
describe('setAttribute', () => {
describe('with namespace', () => {
it('xmlns', () => shouldSetAttributeWithNs('xmlns'));
it('xml', () => shouldSetAttributeWithNs('xml'));
it('svg', () => shouldSetAttributeWithNs('svg'));
it('xhtml', () => shouldSetAttributeWithNs('xhtml'));
it('xlink', () => shouldSetAttributeWithNs('xlink'));
it('unknown', () => {
const div = document.createElement('div');
expect(div.hasAttribute('unknown:name')).toBe(false);
renderer.setAttribute(div, 'name', 'value', 'unknown');
expect(div.getAttribute('unknown:name')).toBe('value');
});
function shouldSetAttributeWithNs(namespace: string): void {
const namespaceUri = NAMESPACE_URIS[namespace];
const div = document.createElement('div');
expect(div.hasAttributeNS(namespaceUri, 'name')).toBe(false);
renderer.setAttribute(div, 'name', 'value', namespace);
expect(div.getAttributeNS(namespaceUri, 'name')).toBe('value');
}
});
});
describe('removeAttribute', () => {
describe('with namespace', () => {
it('xmlns', () => shouldRemoveAttributeWithNs('xmlns'));
it('xml', () => shouldRemoveAttributeWithNs('xml'));
it('svg', () => shouldRemoveAttributeWithNs('svg'));
it('xhtml', () => shouldRemoveAttributeWithNs('xhtml'));
it('xlink', () => shouldRemoveAttributeWithNs('xlink'));
it('unknown', () => {
const div = document.createElement('div');
div.setAttribute('unknown:name', 'value');
expect(div.hasAttribute('unknown:name')).toBe(true);
renderer.removeAttribute(div, 'name', 'unknown');
expect(div.hasAttribute('unknown:name')).toBe(false);
});
function shouldRemoveAttributeWithNs(namespace: string): void {
const namespaceUri = NAMESPACE_URIS[namespace];
const div = document.createElement('div');
div.setAttributeNS(namespaceUri, `${namespace}:name`, 'value');
expect(div.hasAttributeNS(namespaceUri, 'name')).toBe(true);
renderer.removeAttribute(div, 'name', namespace);
expect(div.hasAttributeNS(namespaceUri, 'name')).toBe(false);
}
});
});
describe('removeChild', () => {
it('should not error when removing a child with a different parent than given', () => {
const savedParent = document.createElement('div');
const realParent = document.createElement('div');
const child = document.createElement('div');
realParent.appendChild(child);
renderer.removeChild(savedParent, child);
});
});
if (browserDetection.supportsDeprecatedShadowDomV0) {
it('should allow to style components with emulated encapsulation and no encapsulation inside of components with shadow DOM',
() => {
const fixture = TestBed.createComponent(SomeApp);
const cmp = fixture.debugElement.query(By.css('cmp-native')).nativeElement;
const native = cmp.shadowRoot.querySelector('.native');
expect(window.getComputedStyle(native).color).toEqual('rgb(255, 0, 0)');
const emulated = cmp.shadowRoot.querySelector('.emulated');
expect(window.getComputedStyle(emulated).color).toEqual('rgb(0, 0, 255)');
const none = cmp.shadowRoot.querySelector('.none');
expect(window.getComputedStyle(none).color).toEqual('rgb(0, 255, 0)');
});
}
});
}
@Component({
selector: 'cmp-native',
template: `<div class="native"></div><cmp-emulated></cmp-emulated><cmp-none></cmp-none>`,
styles: [`.native { color: red; }`],
encapsulation: ViewEncapsulation.Native
})
class CmpEncapsulationNative {
}
@Component({
selector: 'cmp-emulated',
template: `<div class="emulated"></div>`,
styles: [`.emulated { color: blue; }`],
encapsulation: ViewEncapsulation.Emulated
})
class CmpEncapsulationEmulated {
}
@Component({
selector: 'cmp-none',
template: `<div class="none"></div>`,
styles: [`.none { color: lime; }`],
encapsulation: ViewEncapsulation.None
})
class CmpEncapsulationNone {
}
@Component({
selector: 'cmp-shadow',
template: `<div class="shadow"></div><cmp-emulated></cmp-emulated><cmp-none></cmp-none>`,
styles: [`.native { color: red; }`],
encapsulation: ViewEncapsulation.ShadowDom
})
class CmpEncapsulationShadow {
}
@Component({
selector: 'some-app',
template: `
<cmp-native></cmp-native>
<cmp-emulated></cmp-emulated>
<cmp-none></cmp-none>
`,
})
export class SomeApp {
}
@Component({selector: 'test-cmp', template: ''})
class TestCmp {
constructor(public renderer: Renderer2) {}
}