angular-docs-cn/packages/core/test/render3/debug_spec.ts

43 lines
1.5 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 {getLContext} from '../../src/render3/context_discovery';
import {RenderFlags, ɵɵdefineComponent, ɵɵelementEnd, ɵɵelementStart, ɵɵtext} from '../../src/render3/index';
import {LViewDebug, toDebug} from '../../src/render3/instructions/lview_debug';
import {ComponentFixture} from './render_util';
describe('Debug Representation', () => {
it('should generate a human readable version', () => {
class MyComponent {
static ngComponentDef = ɵɵdefineComponent({
type: MyComponent,
selectors: [['my-comp']],
vars: 0,
consts: 2,
factory: () => new MyComponent(),
template: function(rf: RenderFlags, ctx: MyComponent) {
if (rf == RenderFlags.Create) {
ɵɵelementStart(0, 'div', ['id', '123']);
ɵɵtext(1, 'Hello World');
ɵɵelementEnd();
}
}
});
}
const fixture = new ComponentFixture(MyComponent);
const hostView = toDebug(getLContext(fixture.component) !.lView);
expect(hostView.host).toEqual(null);
const myCompView = hostView.childViews[0] as LViewDebug;
expect(myCompView.host).toEqual('<div host="mark"><div id="123">Hello World</div></div>');
expect(myCompView.nodes ![0].html).toEqual('<div id="123">');
expect(myCompView.nodes ![0].nodes ![0].html).toEqual('Hello World');
});
});