angular-cn/packages/core/test/metadata/di_spec.ts

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/**
* @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, Directive, ElementRef, Input, NO_ERRORS_SCHEMA, QueryList, ViewChild, ViewChildren} from '@angular/core';
import {TestBed} from '@angular/core/testing';
{
describe('ViewChild', () => {
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [ViewChildTypeSelectorComponent, ViewChildStringSelectorComponent, Simple],
schemas: [NO_ERRORS_SCHEMA],
});
});
it('should support type selector', () => {
TestBed.overrideComponent(
ViewChildTypeSelectorComponent,
{set: {template: `<simple [marker]="'1'"></simple><simple [marker]="'2'"></simple>`}});
const view = TestBed.createComponent(ViewChildTypeSelectorComponent);
view.detectChanges();
expect(view.componentInstance.child).toBeDefined();
expect(view.componentInstance.child.marker).toBe('1');
});
it('should support string selector', () => {
TestBed.overrideComponent(
ViewChildStringSelectorComponent, {set: {template: `<simple #child></simple>`}});
const view = TestBed.createComponent(ViewChildStringSelectorComponent);
view.detectChanges();
expect(view.componentInstance.child).toBeDefined();
});
});
describe('ViewChildren', () => {
beforeEach(() => {
TestBed.configureTestingModule({
declarations:
[ViewChildrenTypeSelectorComponent, ViewChildrenStringSelectorComponent, Simple],
schemas: [NO_ERRORS_SCHEMA],
});
});
it('should support type selector', () => {
TestBed.overrideComponent(
ViewChildrenTypeSelectorComponent,
{set: {template: `<simple></simple><simple></simple>`}});
const view = TestBed.createComponent(ViewChildrenTypeSelectorComponent);
view.detectChanges();
expect(view.componentInstance.children).toBeDefined();
expect(view.componentInstance.children.length).toBe(2);
});
it('should support string selector', () => {
TestBed.overrideComponent(
ViewChildrenStringSelectorComponent,
{set: {template: `<simple #child1></simple><simple #child2></simple>`}});
const view = TestBed.configureTestingModule({schemas: [NO_ERRORS_SCHEMA]})
.createComponent(ViewChildrenStringSelectorComponent);
view.detectChanges();
expect(view.componentInstance.children).toBeDefined();
expect(view.componentInstance.children.length).toBe(2);
});
});
}
@Directive({selector: 'simple'})
class Simple {
// TODO(issue/24571): remove '!'.
@Input() marker!: string;
}
@Component({selector: 'view-child-type-selector', template: ''})
class ViewChildTypeSelectorComponent {
// TODO(issue/24571): remove '!'.
@ViewChild(Simple) child!: Simple;
}
@Component({selector: 'view-child-string-selector', template: ''})
class ViewChildStringSelectorComponent {
// TODO(issue/24571): remove '!'.
@ViewChild('child') child!: ElementRef;
}
@Component({selector: 'view-children-type-selector', template: ''})
class ViewChildrenTypeSelectorComponent {
// TODO(issue/24571): remove '!'.
@ViewChildren(Simple) children!: QueryList<Simple>;
}
@Component({selector: 'view-child-string-selector', template: ''})
class ViewChildrenStringSelectorComponent {
// Allow comma separated selector (with spaces).
// TODO(issue/24571): remove '!'.
@ViewChildren('child1 , child2') children!: QueryList<ElementRef>;
}