117 lines
3.3 KiB
TypeScript
117 lines
3.3 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 {D, E, Q, QueryList, e, m, qR} from '../../src/render3/index';
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import {createComponent, renderComponent} from './render_util';
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describe('query', () => {
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it('should project query children', () => {
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const Child = createComponent('child', function(ctx: any, cm: boolean) {});
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let child1 = null;
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let child2 = null;
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const Cmp = createComponent('cmp', function(ctx: any, cm: boolean) {
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/**
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* <child>
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* <child>
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* </child>
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* </child>
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* class Cmp {
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* @ViewChildren(Child) query0;
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* @ViewChildren(Child, {descend: true}) query1;
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* }
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*/
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let tmp: any;
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if (cm) {
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m(0, Q(Child, false));
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m(1, Q(Child, true));
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E(2, Child.ngComponentDef);
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{
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child1 = D(3, Child.ngComponentDef.n(), Child.ngComponentDef);
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E(4, Child.ngComponentDef);
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{ child2 = D(5, Child.ngComponentDef.n(), Child.ngComponentDef); }
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e();
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}
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e();
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}
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qR(tmp = m<QueryList<any>>(0)) && (ctx.query0 = tmp as QueryList<any>);
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qR(tmp = m<QueryList<any>>(1)) && (ctx.query1 = tmp as QueryList<any>);
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});
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const parent = renderComponent(Cmp);
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expect((parent.query0 as QueryList<any>).toArray()).toEqual([child1]);
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expect((parent.query1 as QueryList<any>).toArray()).toEqual([child1, child2]);
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});
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describe('local names', () => {
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it('should query for a single element', () => {
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let elToQuery;
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/**
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* <div #foo></div>
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* <div></div>
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* class Cmpt {
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* @ViewChildren('foo') query;
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* }
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*/
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const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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m(0, Q(['foo']));
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elToQuery = E(1, 'div', [], 'foo');
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e();
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E(2, 'div');
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e();
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}
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qR(tmp = m<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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});
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const cmptInstance = renderComponent(Cmpt);
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const query = (cmptInstance.query as QueryList<any>);
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expect(query.length).toBe(1);
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expect(query.first.nativeElement).toEqual(elToQuery);
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});
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it('should query for multiple elements', () => {
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let el1ToQuery;
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let el2ToQuery;
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/**
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* <div #foo></div>
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* <div></div>
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* <div #bar></div>
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* class Cmpt {
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* @ViewChildren('foo,bar') query;
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* }
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*/
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const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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m(0, Q(['foo', 'bar']));
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el1ToQuery = E(1, 'div', null, 'foo');
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e();
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E(2, 'div');
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e();
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el2ToQuery = E(3, 'div', null, 'bar');
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e();
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}
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qR(tmp = m<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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});
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const cmptInstance = renderComponent(Cmpt);
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const query = (cmptInstance.query as QueryList<any>);
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expect(query.length).toBe(2);
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expect(query.first.nativeElement).toEqual(el1ToQuery);
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expect(query.last.nativeElement).toEqual(el2ToQuery);
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});
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});
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});
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