1797 lines
64 KiB
TypeScript
1797 lines
64 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 {CommonModule} from '@angular/common';
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import {Attribute, ChangeDetectorRef, Component, ComponentFactoryResolver, ComponentRef, Directive, ElementRef, EventEmitter, Host, HostBinding, INJECTOR, Inject, Injectable, InjectionToken, Injector, Input, LOCALE_ID, ModuleWithProviders, NgModule, NgZone, Optional, Output, Pipe, PipeTransform, Self, SkipSelf, TemplateRef, ViewChild, ViewContainerRef, forwardRef, ɵDEFAULT_LOCALE_ID as DEFAULT_LOCALE_ID} from '@angular/core';
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import {ɵINJECTOR_SCOPE} from '@angular/core/src/core';
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import {ViewRef} from '@angular/core/src/render3/view_ref';
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import {TestBed} from '@angular/core/testing';
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import {ivyEnabled, onlyInIvy} from '@angular/private/testing';
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import {BehaviorSubject} from 'rxjs';
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describe('di', () => {
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describe('no dependencies', () => {
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it('should create directive with no deps', () => {
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@Directive({selector: '[dir]', exportAs: 'dir'})
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class MyDirective {
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value = 'Created';
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}
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@Component({template: '<div dir #dir="dir">{{ dir.value }}</div>'})
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class MyComp {
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}
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TestBed.configureTestingModule({declarations: [MyDirective, MyComp]});
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const fixture = TestBed.createComponent(MyComp);
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fixture.detectChanges();
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const divElement = fixture.nativeElement.querySelector('div');
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expect(divElement.textContent).toContain('Created');
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});
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});
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describe('multi providers', () => {
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it('should process ModuleWithProvider providers after module imports', () => {
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const testToken = new InjectionToken<string[]>('test-multi');
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@NgModule({providers: [{provide: testToken, useValue: 'A', multi: true}]})
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class TestModuleA {
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}
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@NgModule({providers: [{provide: testToken, useValue: 'B', multi: true}]})
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class TestModuleB {
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}
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TestBed.configureTestingModule({
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imports: [
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{
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ngModule: TestModuleA,
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providers: [{provide: testToken, useValue: 'C', multi: true}],
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},
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TestModuleB,
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]
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});
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expect(TestBed.inject(testToken)).toEqual(['A', 'B', 'C']);
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});
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});
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describe('directive injection', () => {
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let log: string[] = [];
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@Directive({selector: '[dirB]', exportAs: 'dirB'})
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class DirectiveB {
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@Input() value = 'DirB';
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constructor() { log.push(this.value); }
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}
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beforeEach(() => log = []);
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it('should create directive with intra view dependencies', () => {
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@Directive({selector: '[dirA]', exportAs: 'dirA'})
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class DirectiveA {
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value = 'DirA';
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}
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@Directive({selector: '[dirC]', exportAs: 'dirC'})
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class DirectiveC {
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value: string;
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constructor(dirA: DirectiveA, dirB: DirectiveB) { this.value = dirA.value + dirB.value; }
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}
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@Component({
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template: `
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<div dirA>
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<span dirB dirC #dir="dirC">{{ dir.value }}</span>
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</div>
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`
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})
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class MyComp {
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, DirectiveC, MyComp]});
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const fixture = TestBed.createComponent(MyComp);
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fixture.detectChanges();
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const divElement = fixture.nativeElement.querySelector('span');
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expect(divElement.textContent).toContain('DirADirB');
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});
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it('should instantiate injected directives in dependency order', () => {
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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value = 'dirA';
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constructor(dirB: DirectiveB) { log.push(`DirA (dep: ${dirB.value})`); }
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}
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@Component({template: '<div dirA dirB></div>'})
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class MyComp {
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp]});
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const fixture = TestBed.createComponent(MyComp);
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fixture.detectChanges();
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expect(log).toEqual(['DirB', 'DirA (dep: DirB)']);
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});
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it('should fallback to the module injector', () => {
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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value = 'dirA';
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constructor(dirB: DirectiveB) { log.push(`DirA (dep: ${dirB.value})`); }
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}
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// - dirB is know to the node injectors
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// - then when dirA tries to inject dirB, it will check the node injector first tree
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// - if not found, it will check the module injector tree
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@Component({template: '<div dirB></div><div dirA></div>'})
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class MyComp {
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}
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TestBed.configureTestingModule({
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declarations: [DirectiveA, DirectiveB, MyComp],
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providers: [{provide: DirectiveB, useValue: {value: 'module'}}]
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});
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const fixture = TestBed.createComponent(MyComp);
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fixture.detectChanges();
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expect(log).toEqual(['DirB', 'DirA (dep: module)']);
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});
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it('should instantiate injected directives before components', () => {
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@Component({selector: 'my-comp', template: ''})
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class MyComp {
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constructor(dirB: DirectiveB) { log.push(`Comp (dep: ${dirB.value})`); }
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}
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@Component({template: '<my-comp dirB></my-comp>'})
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class MyApp {
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}
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TestBed.configureTestingModule({declarations: [DirectiveB, MyComp, MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.detectChanges();
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expect(log).toEqual(['DirB', 'Comp (dep: DirB)']);
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});
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it('should inject directives in the correct order in a for loop', () => {
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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constructor(dir: DirectiveB) { log.push(`DirA (dep: ${dir.value})`); }
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}
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@Component({template: '<div dirA dirB *ngFor="let i of array"></div>'})
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class MyComp {
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array = [1, 2, 3];
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp]});
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const fixture = TestBed.createComponent(MyComp);
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fixture.detectChanges();
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expect(log).toEqual(
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['DirB', 'DirA (dep: DirB)', 'DirB', 'DirA (dep: DirB)', 'DirB', 'DirA (dep: DirB)']);
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});
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it('should instantiate directives with multiple out-of-order dependencies', () => {
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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value = 'DirA';
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constructor() { log.push(this.value); }
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}
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@Directive({selector: '[dirC]'})
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class DirectiveC {
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value = 'DirC';
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constructor() { log.push(this.value); }
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}
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@Directive({selector: '[dirB]'})
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class DirectiveB {
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constructor(dirA: DirectiveA, dirC: DirectiveC) {
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log.push(`DirB (deps: ${dirA.value} and ${dirC.value})`);
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}
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}
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@Component({template: '<div dirA dirB dirC></div>'})
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class MyComp {
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, DirectiveC, MyComp]});
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const fixture = TestBed.createComponent(MyComp);
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fixture.detectChanges();
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expect(log).toEqual(['DirA', 'DirC', 'DirB (deps: DirA and DirC)']);
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});
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it('should instantiate in the correct order for complex case', () => {
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@Directive({selector: '[dirC]'})
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class DirectiveC {
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value = 'DirC';
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constructor(dirB: DirectiveB) { log.push(`DirC (dep: ${dirB.value})`); }
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}
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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value = 'DirA';
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constructor(dirC: DirectiveC) { log.push(`DirA (dep: ${dirC.value})`); }
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}
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@Directive({selector: '[dirD]'})
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class DirectiveD {
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value = 'DirD';
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constructor(dirA: DirectiveA) { log.push(`DirD (dep: ${dirA.value})`); }
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}
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@Component({selector: 'my-comp', template: ''})
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class MyComp {
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constructor(dirD: DirectiveD) { log.push(`Comp (dep: ${dirD.value})`); }
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}
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@Component({template: '<my-comp dirA dirB dirC dirD></my-comp>'})
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class MyApp {
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}
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TestBed.configureTestingModule(
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{declarations: [DirectiveA, DirectiveB, DirectiveC, DirectiveD, MyComp, MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.detectChanges();
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expect(log).toEqual(
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['DirB', 'DirC (dep: DirB)', 'DirA (dep: DirC)', 'DirD (dep: DirA)', 'Comp (dep: DirD)']);
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});
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it('should instantiate in correct order with mixed parent and peer dependencies', () => {
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@Component({template: '<div dirA dirB dirC></div>'})
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class MyApp {
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value = 'App';
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}
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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constructor(dirB: DirectiveB, app: MyApp) {
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log.push(`DirA (deps: ${dirB.value} and ${app.value})`);
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}
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.detectChanges();
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expect(log).toEqual(['DirB', 'DirA (deps: DirB and App)']);
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});
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it('should not use a parent when peer dep is available', () => {
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let count = 1;
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@Directive({selector: '[dirB]'})
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class DirectiveB {
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count: number;
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constructor() {
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log.push(`DirB`);
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this.count = count++;
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}
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}
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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constructor(dirB: DirectiveB) { log.push(`DirA (dep: DirB - ${dirB.count})`); }
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}
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@Component({selector: 'my-comp', template: '<div dirA dirB></div>'})
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class MyComp {
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}
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@Component({template: '<my-comp dirB></my-comp>'})
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class MyApp {
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp, MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.detectChanges();
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expect(log).toEqual(['DirB', 'DirB', 'DirA (dep: DirB - 2)']);
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});
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describe('dependencies in parent views', () => {
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@Directive({selector: '[dirA]', exportAs: 'dirA'})
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class DirectiveA {
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injector: Injector;
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constructor(public dirB: DirectiveB, public vcr: ViewContainerRef) {
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this.injector = vcr.injector;
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}
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}
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@Component(
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{selector: 'my-comp', template: '<div dirA #dir="dirA">{{ dir.dirB.value }}</div>'})
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class MyComp {
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}
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it('should find dependencies on component hosts', () => {
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@Component({template: '<my-comp dirB></my-comp>'})
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class MyApp {
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp, MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.detectChanges();
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const divElement = fixture.nativeElement.querySelector('div');
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expect(divElement.textContent).toEqual('DirB');
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});
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it('should find dependencies for directives in embedded views', () => {
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@Component({
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template: `<div dirB>
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<div *ngIf="showing">
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<div dirA #dir="dirA">{{ dir.dirB.value }}</div>
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</div>
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</div>`
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})
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class MyApp {
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showing = false;
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp, MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.componentInstance.showing = true;
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fixture.detectChanges();
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const divElement = fixture.nativeElement.querySelector('div');
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expect(divElement.textContent).toEqual('DirB');
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});
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it('should find dependencies of directives nested deeply in inline views', () => {
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@Component({
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template: `<div dirB>
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<ng-container *ngIf="!skipContent">
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<ng-container *ngIf="!skipContent2">
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<div dirA #dir="dirA">{{ dir.dirB.value }}</div>
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</ng-container>
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</ng-container>
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</div>`
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})
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class MyApp {
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skipContent = false;
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skipContent2 = false;
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.detectChanges();
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const divElement = fixture.nativeElement.querySelector('div');
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expect(divElement.textContent).toEqual('DirB');
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});
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it('should find dependencies in declaration tree of ng-template (not insertion tree)', () => {
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@Directive({selector: '[structuralDir]'})
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class StructuralDirective {
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@Input() tmp !: TemplateRef<any>;
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constructor(public vcr: ViewContainerRef) {}
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create() { this.vcr.createEmbeddedView(this.tmp); }
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}
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@Component({
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template: `<div dirB value="declaration">
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<ng-template #foo>
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<div dirA #dir="dirA">{{ dir.dirB.value }}</div>
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</ng-template>
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</div>
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<div dirB value="insertion">
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<div structuralDir [tmp]="foo"></div>
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<!-- insertion point -->
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</div>`
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})
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class MyComp {
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@ViewChild(StructuralDirective, {static: false}) structuralDir !: StructuralDirective;
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}
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TestBed.configureTestingModule(
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{declarations: [StructuralDirective, DirectiveA, DirectiveB, MyComp]});
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const fixture = TestBed.createComponent(MyComp);
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fixture.detectChanges();
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fixture.componentInstance.structuralDir.create();
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fixture.detectChanges();
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const divElement = fixture.nativeElement.querySelector('div[value=insertion]');
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expect(divElement.textContent).toEqual('declaration');
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});
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it('should create injectors on second template pass', () => {
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@Component({
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template: `<div>
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<my-comp dirB></my-comp>
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<my-comp dirB></my-comp>
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</div>`
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})
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class MyApp {
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp, MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.detectChanges();
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const divElement = fixture.nativeElement.querySelector('div');
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expect(divElement.textContent).toEqual('DirBDirB');
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});
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it('should create injectors and host bindings in same view', () => {
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@Directive({selector: '[hostBindingDir]'})
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class HostBindingDirective {
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@HostBinding('id') id = 'foo';
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}
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@Component({
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template: `<div dirB hostBindingDir>
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<p dirA #dir="dirA">{{ dir.dirB.value }}</p>
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</div>`
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})
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class MyApp {
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@ViewChild(HostBindingDirective, {static: false}) hostBindingDir !: HostBindingDirective;
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@ViewChild(DirectiveA, {static: false}) dirA !: DirectiveA;
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}
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TestBed.configureTestingModule(
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{declarations: [DirectiveA, DirectiveB, HostBindingDirective, MyApp]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.detectChanges();
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const divElement = fixture.nativeElement.querySelector('div');
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expect(divElement.textContent).toEqual('DirB');
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expect(divElement.id).toEqual('foo');
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const dirA = fixture.componentInstance.dirA;
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expect(dirA.vcr.injector).toEqual(dirA.injector);
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const hostBindingDir = fixture.componentInstance.hostBindingDir;
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hostBindingDir.id = 'bar';
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fixture.detectChanges();
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expect(divElement.id).toBe('bar');
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});
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});
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it('should throw if directive is not found anywhere', () => {
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@Directive({selector: '[dirB]'})
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class DirectiveB {
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constructor() {}
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}
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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constructor(siblingDir: DirectiveB) {}
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}
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@Component({template: '<div dirA></div>'})
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class MyComp {
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp]});
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expect(() => TestBed.createComponent(MyComp)).toThrowError(/No provider for DirectiveB/);
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});
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it('should throw if directive is not found in ancestor tree', () => {
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@Directive({selector: '[dirB]'})
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class DirectiveB {
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constructor() {}
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}
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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constructor(siblingDir: DirectiveB) {}
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}
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@Component({template: '<div dirA></div><div dirB></div>'})
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class MyComp {
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}
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TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp]});
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expect(() => TestBed.createComponent(MyComp)).toThrowError(/No provider for DirectiveB/);
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});
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onlyInIvy('Ivy has different error message for circular dependency')
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.it('should throw if directives try to inject each other', () => {
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@Directive({selector: '[dirB]'})
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class DirectiveB {
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constructor(@Inject(forwardRef(() => DirectiveA)) siblingDir: DirectiveA) {}
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}
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@Directive({selector: '[dirA]'})
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class DirectiveA {
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constructor(siblingDir: DirectiveB) {}
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}
|
|
|
|
@Component({template: '<div dirA dirB></div>'})
|
|
class MyComp {
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp]});
|
|
expect(() => TestBed.createComponent(MyComp)).toThrowError(/Circular dep for/);
|
|
});
|
|
|
|
onlyInIvy('Ivy has different error message for circular dependency')
|
|
.it('should throw if directive tries to inject itself', () => {
|
|
@Directive({selector: '[dirA]'})
|
|
class DirectiveA {
|
|
constructor(siblingDir: DirectiveA) {}
|
|
}
|
|
|
|
@Component({template: '<div dirA></div>'})
|
|
class MyComp {
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp]});
|
|
expect(() => TestBed.createComponent(MyComp)).toThrowError(/Circular dep for/);
|
|
});
|
|
|
|
describe('flags', () => {
|
|
|
|
@Directive({selector: '[dirB]'})
|
|
class DirectiveB {
|
|
@Input('dirB') value = '';
|
|
}
|
|
|
|
describe('Optional', () => {
|
|
|
|
@Directive({selector: '[dirA]'})
|
|
class DirectiveA {
|
|
constructor(@Optional() public dirB: DirectiveB) {}
|
|
}
|
|
|
|
it('should not throw if dependency is @Optional (module injector)', () => {
|
|
|
|
@Component({template: '<div dirA></div>'})
|
|
class MyComp {
|
|
@ViewChild(DirectiveA, {static: false}) dirA !: DirectiveA;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const dirA = fixture.componentInstance.dirA;
|
|
expect(dirA.dirB).toBeNull();
|
|
});
|
|
|
|
it('should return null if @Optional dependency has @Self flag', () => {
|
|
|
|
@Directive({selector: '[dirC]'})
|
|
class DirectiveC {
|
|
constructor(@Optional() @Self() public dirB: DirectiveB) {}
|
|
}
|
|
|
|
@Component({template: '<div dirC></div>'})
|
|
class MyComp {
|
|
@ViewChild(DirectiveC, {static: false}) dirC !: DirectiveC;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveC, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const dirC = fixture.componentInstance.dirC;
|
|
expect(dirC.dirB).toBeNull();
|
|
});
|
|
|
|
it('should not throw if dependency is @Optional but defined elsewhere', () => {
|
|
|
|
@Directive({selector: '[dirC]'})
|
|
class DirectiveC {
|
|
constructor(@Optional() public dirB: DirectiveB) {}
|
|
}
|
|
|
|
@Component({template: '<div dirB></div><div dirC></div>'})
|
|
class MyComp {
|
|
@ViewChild(DirectiveC, {static: false}) dirC !: DirectiveC;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveB, DirectiveC, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const dirC = fixture.componentInstance.dirC;
|
|
expect(dirC.dirB).toBeNull();
|
|
});
|
|
});
|
|
|
|
it('should skip the current node with @SkipSelf', () => {
|
|
|
|
@Directive({selector: '[dirA]'})
|
|
class DirectiveA {
|
|
constructor(@SkipSelf() public dirB: DirectiveB) {}
|
|
}
|
|
|
|
@Component({selector: 'my-comp', template: '<div dirA dirB="self"></div>'})
|
|
class MyComp {
|
|
@ViewChild(DirectiveA, {static: false}) dirA !: DirectiveA;
|
|
}
|
|
|
|
@Component({template: '<my-comp dirB="parent"></my-comp>'})
|
|
class MyApp {
|
|
@ViewChild(MyComp, {static: false}) myComp !: MyComp;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp, MyApp]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
fixture.detectChanges();
|
|
|
|
const dirA = fixture.componentInstance.myComp.dirA;
|
|
expect(dirA.dirB.value).toEqual('parent');
|
|
});
|
|
|
|
onlyInIvy('Ivy has different error message when dependency is not found')
|
|
.it('should check only the current node with @Self', () => {
|
|
|
|
@Directive({selector: '[dirA]'})
|
|
class DirectiveA {
|
|
constructor(@Self() public dirB: DirectiveB) {}
|
|
}
|
|
|
|
@Component({template: '<div dirB><div dirA></div></div>'})
|
|
class MyComp {
|
|
}
|
|
TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyComp]});
|
|
expect(() => TestBed.createComponent(MyComp))
|
|
.toThrowError(/NodeInjector: NOT_FOUND \[DirectiveB]/);
|
|
});
|
|
|
|
describe('@Host', () => {
|
|
@Directive({selector: '[dirA]'})
|
|
class DirectiveA {
|
|
constructor(@Host() public dirB: DirectiveB) {}
|
|
}
|
|
|
|
@Directive({selector: '[dirString]'})
|
|
class DirectiveString {
|
|
constructor(@Host() public s: String) {}
|
|
}
|
|
|
|
it('should find viewProviders on the host itself', () => {
|
|
@Component({
|
|
selector: 'my-comp',
|
|
template: '<div dirString></div>',
|
|
viewProviders: [{provide: String, useValue: 'Foo'}]
|
|
})
|
|
class MyComp {
|
|
@ViewChild(DirectiveString, {static: false}) dirString !: DirectiveString;
|
|
}
|
|
|
|
@Component({template: '<my-comp></my-comp>'})
|
|
class MyApp {
|
|
@ViewChild(MyComp, {static: false}) myComp !: MyComp;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveString, MyComp, MyApp]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
fixture.detectChanges();
|
|
|
|
const dirString = fixture.componentInstance.myComp.dirString;
|
|
expect(dirString.s).toBe('Foo');
|
|
});
|
|
|
|
it('should find host component on the host itself', () => {
|
|
@Directive({selector: '[dirComp]'})
|
|
class DirectiveComp {
|
|
constructor(@Inject(forwardRef(() => MyComp)) @Host() public comp: MyComp) {}
|
|
}
|
|
|
|
@Component({selector: 'my-comp', template: '<div dirComp></div>'})
|
|
class MyComp {
|
|
@ViewChild(DirectiveComp, {static: false}) dirComp !: DirectiveComp;
|
|
}
|
|
|
|
@Component({template: '<my-comp></my-comp>'})
|
|
class MyApp {
|
|
@ViewChild(MyComp, {static: false}) myComp !: MyComp;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveComp, MyComp, MyApp]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
fixture.detectChanges();
|
|
|
|
const myComp = fixture.componentInstance.myComp;
|
|
const dirComp = myComp.dirComp;
|
|
expect(dirComp.comp).toBe(myComp);
|
|
});
|
|
|
|
onlyInIvy('Ivy has different error message when dependency is not found')
|
|
.it('should not find providers on the host itself', () => {
|
|
@Component({
|
|
selector: 'my-comp',
|
|
template: '<div dirString></div>',
|
|
providers: [{provide: String, useValue: 'Foo'}]
|
|
})
|
|
class MyComp {
|
|
}
|
|
|
|
@Component({template: '<my-comp></my-comp>'})
|
|
class MyApp {
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveString, MyComp, MyApp]});
|
|
expect(() => TestBed.createComponent(MyApp))
|
|
.toThrowError(/NodeInjector: NOT_FOUND \[String]/);
|
|
});
|
|
|
|
onlyInIvy('Ivy has different error message when dependency is not found')
|
|
.it('should not find other directives on the host itself', () => {
|
|
@Component({selector: 'my-comp', template: '<div dirA></div>'})
|
|
class MyComp {
|
|
}
|
|
|
|
@Component({template: '<my-comp dirB></my-comp>'})
|
|
class MyApp {
|
|
}
|
|
|
|
TestBed.configureTestingModule(
|
|
{declarations: [DirectiveA, DirectiveB, MyComp, MyApp]});
|
|
expect(() => TestBed.createComponent(MyApp))
|
|
.toThrowError(/NodeInjector: NOT_FOUND \[DirectiveB]/);
|
|
});
|
|
|
|
onlyInIvy('Ivy has different error message when dependency is not found')
|
|
.it('should not find providers on the host itself if in inline view', () => {
|
|
@Component({
|
|
selector: 'my-comp',
|
|
template: '<ng-container *ngIf="showing"><div dirA></div></ng-container>'
|
|
})
|
|
class MyComp {
|
|
showing = false;
|
|
}
|
|
|
|
@Component({template: '<my-comp dirB></my-comp>'})
|
|
class MyApp {
|
|
@ViewChild(MyComp, {static: false}) myComp !: MyComp;
|
|
}
|
|
|
|
TestBed.configureTestingModule(
|
|
{declarations: [DirectiveA, DirectiveB, MyComp, MyApp]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
fixture.detectChanges();
|
|
expect(() => {
|
|
fixture.componentInstance.myComp.showing = true;
|
|
fixture.detectChanges();
|
|
}).toThrowError(/NodeInjector: NOT_FOUND \[DirectiveB]/);
|
|
});
|
|
|
|
it('should find providers across embedded views if not passing component boundary', () => {
|
|
@Component({template: '<div dirB><div *ngIf="showing" dirA></div></div>'})
|
|
class MyApp {
|
|
showing = false;
|
|
@ViewChild(DirectiveA, {static: false}) dirA !: DirectiveA;
|
|
@ViewChild(DirectiveB, {static: false}) dirB !: DirectiveB;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveA, DirectiveB, MyApp]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
fixture.detectChanges();
|
|
fixture.componentInstance.showing = true;
|
|
fixture.detectChanges();
|
|
|
|
const dirA = fixture.componentInstance.dirA;
|
|
const dirB = fixture.componentInstance.dirB;
|
|
expect(dirA.dirB).toBe(dirB);
|
|
});
|
|
|
|
onlyInIvy('Ivy has different error message when dependency is not found')
|
|
.it('should not find component above the host', () => {
|
|
@Directive({selector: '[dirComp]'})
|
|
class DirectiveComp {
|
|
constructor(@Inject(forwardRef(() => MyApp)) @Host() public comp: MyApp) {}
|
|
}
|
|
|
|
@Component({selector: 'my-comp', template: '<div dirComp></div>'})
|
|
class MyComp {
|
|
}
|
|
|
|
@Component({template: '<my-comp></my-comp>'})
|
|
class MyApp {
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [DirectiveComp, MyComp, MyApp]});
|
|
expect(() => TestBed.createComponent(MyApp))
|
|
.toThrowError(/NodeInjector: NOT_FOUND \[MyApp]/);
|
|
});
|
|
|
|
describe('regression', () => {
|
|
// based on https://stackblitz.com/edit/angular-riss8k?file=src/app/app.component.ts
|
|
it('should allow directives with Host flag to inject view providers from containing component',
|
|
() => {
|
|
class ControlContainer {}
|
|
let controlContainers: ControlContainer[] = [];
|
|
let injectedControlContainer: ControlContainer|null = null;
|
|
|
|
@Directive({
|
|
selector: '[group]',
|
|
providers: [{provide: ControlContainer, useExisting: GroupDirective}]
|
|
})
|
|
class GroupDirective {
|
|
constructor() { controlContainers.push(this); }
|
|
}
|
|
|
|
@Directive({selector: '[control]'})
|
|
class ControlDirective {
|
|
constructor(@Host() @SkipSelf() @Inject(ControlContainer) parent:
|
|
ControlContainer) {
|
|
injectedControlContainer = parent;
|
|
}
|
|
}
|
|
|
|
@Component({
|
|
selector: 'my-comp',
|
|
template: '<input control>',
|
|
viewProviders: [{provide: ControlContainer, useExisting: GroupDirective}]
|
|
})
|
|
class MyComp {
|
|
}
|
|
|
|
@Component({
|
|
template: `
|
|
<div group>
|
|
<my-comp></my-comp>
|
|
</div>
|
|
`
|
|
})
|
|
class MyApp {
|
|
}
|
|
|
|
TestBed.configureTestingModule(
|
|
{declarations: [GroupDirective, ControlDirective, MyComp, MyApp]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
expect(fixture.nativeElement.innerHTML)
|
|
.toBe('<div group=""><my-comp><input control=""></my-comp></div>');
|
|
expect(controlContainers).toEqual([injectedControlContainer !]);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('Tree shakable injectors', () => {
|
|
it('should support tree shakable injectors scopes', () => {
|
|
@Injectable({providedIn: 'any'})
|
|
class AnyService {
|
|
constructor(public injector: Injector) {}
|
|
}
|
|
|
|
@Injectable({providedIn: 'root'})
|
|
class RootService {
|
|
constructor(public injector: Injector) {}
|
|
}
|
|
|
|
@Injectable({providedIn: 'platform'})
|
|
class PlatformService {
|
|
constructor(public injector: Injector) {}
|
|
}
|
|
|
|
const testBedInjector: Injector = TestBed.get(Injector);
|
|
const childInjector = Injector.create([], testBedInjector);
|
|
|
|
const anyService = childInjector.get(AnyService);
|
|
expect(anyService.injector).toBe(childInjector);
|
|
|
|
const rootService = childInjector.get(RootService);
|
|
expect(rootService.injector.get(ɵINJECTOR_SCOPE)).toBe('root');
|
|
|
|
const platformService = childInjector.get(PlatformService);
|
|
expect(platformService.injector.get(ɵINJECTOR_SCOPE)).toBe('platform');
|
|
});
|
|
});
|
|
|
|
describe('service injection', () => {
|
|
|
|
it('should create instance even when no injector present', () => {
|
|
@Injectable({providedIn: 'root'})
|
|
class MyService {
|
|
value = 'MyService';
|
|
}
|
|
@Component({template: '<div>{{myService.value}}</div>'})
|
|
class MyComp {
|
|
constructor(public myService: MyService) {}
|
|
}
|
|
TestBed.configureTestingModule({declarations: [MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const divElement = fixture.nativeElement.querySelector('div');
|
|
expect(divElement.textContent).toEqual('MyService');
|
|
});
|
|
|
|
it('should support sub-classes with no @Injectable decorator', () => {
|
|
@Injectable()
|
|
class Dependency {
|
|
}
|
|
|
|
@Injectable()
|
|
class SuperClass {
|
|
constructor(public dep: Dependency) {}
|
|
}
|
|
|
|
// Note, no @Injectable decorators for these two classes
|
|
class SubClass extends SuperClass {}
|
|
class SubSubClass extends SubClass {}
|
|
|
|
@Component({template: ''})
|
|
class MyComp {
|
|
constructor(public myService: SuperClass) {}
|
|
}
|
|
TestBed.configureTestingModule({
|
|
declarations: [MyComp],
|
|
providers: [{provide: SuperClass, useClass: SubSubClass}, Dependency]
|
|
});
|
|
|
|
const warnSpy = spyOn(console, 'warn');
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
expect(fixture.componentInstance.myService.dep instanceof Dependency).toBe(true);
|
|
|
|
if (ivyEnabled) {
|
|
expect(warnSpy).toHaveBeenCalledWith(
|
|
`DEPRECATED: DI is instantiating a token "SubSubClass" that inherits its @Injectable decorator but does not provide one itself.\n` +
|
|
`This will become an error in v10. Please add @Injectable() to the "SubSubClass" class.`);
|
|
}
|
|
});
|
|
});
|
|
|
|
describe('inject', () => {
|
|
|
|
it('should inject from parent view', () => {
|
|
@Directive({selector: '[parentDir]'})
|
|
class ParentDirective {
|
|
}
|
|
|
|
@Directive({selector: '[childDir]', exportAs: 'childDir'})
|
|
class ChildDirective {
|
|
value: string;
|
|
constructor(public parent: ParentDirective) { this.value = parent.constructor.name; }
|
|
}
|
|
|
|
@Directive({selector: '[child2Dir]', exportAs: 'child2Dir'})
|
|
class Child2Directive {
|
|
value: boolean;
|
|
constructor(parent: ParentDirective, child: ChildDirective) {
|
|
this.value = parent === child.parent;
|
|
}
|
|
}
|
|
|
|
@Component({
|
|
template: `<div parentDir>
|
|
<ng-container *ngIf="showing">
|
|
<span childDir child2Dir #child1="childDir" #child2="child2Dir">{{ child1.value }}-{{ child2.value }}</span>
|
|
</ng-container>
|
|
</div>`
|
|
})
|
|
class MyComp {
|
|
showing = true;
|
|
}
|
|
TestBed.configureTestingModule(
|
|
{declarations: [ParentDirective, ChildDirective, Child2Directive, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const divElement = fixture.nativeElement.querySelector('div');
|
|
expect(divElement.textContent).toBe('ParentDirective-true');
|
|
});
|
|
});
|
|
|
|
describe('Special tokens', () => {
|
|
|
|
describe('Injector', () => {
|
|
|
|
it('should inject the injector', () => {
|
|
@Directive({selector: '[injectorDir]'})
|
|
class InjectorDir {
|
|
constructor(public injector: Injector) {}
|
|
}
|
|
|
|
@Directive({selector: '[otherInjectorDir]'})
|
|
class OtherInjectorDir {
|
|
constructor(public otherDir: InjectorDir, public injector: Injector) {}
|
|
}
|
|
|
|
@Component({template: '<div injectorDir otherInjectorDir></div>'})
|
|
class MyComp {
|
|
@ViewChild(InjectorDir, {static: false}) injectorDir !: InjectorDir;
|
|
@ViewChild(OtherInjectorDir, {static: false}) otherInjectorDir !: OtherInjectorDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [InjectorDir, OtherInjectorDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const divElement = fixture.nativeElement.querySelector('div');
|
|
const injectorDir = fixture.componentInstance.injectorDir;
|
|
const otherInjectorDir = fixture.componentInstance.otherInjectorDir;
|
|
|
|
expect(injectorDir.injector.get(ElementRef).nativeElement).toBe(divElement);
|
|
expect(otherInjectorDir.injector.get(ElementRef).nativeElement).toBe(divElement);
|
|
expect(otherInjectorDir.injector.get(InjectorDir)).toBe(injectorDir);
|
|
expect(injectorDir.injector).not.toBe(otherInjectorDir.injector);
|
|
});
|
|
|
|
it('should inject INJECTOR', () => {
|
|
@Directive({selector: '[injectorDir]'})
|
|
class InjectorDir {
|
|
constructor(@Inject(INJECTOR) public injector: Injector) {}
|
|
}
|
|
|
|
@Component({template: '<div injectorDir></div>'})
|
|
class MyComp {
|
|
@ViewChild(InjectorDir, {static: false}) injectorDir !: InjectorDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [InjectorDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const divElement = fixture.nativeElement.querySelector('div');
|
|
const injectorDir = fixture.componentInstance.injectorDir;
|
|
|
|
expect(injectorDir.injector.get(ElementRef).nativeElement).toBe(divElement);
|
|
expect(injectorDir.injector.get(Injector).get(ElementRef).nativeElement).toBe(divElement);
|
|
expect(injectorDir.injector.get(INJECTOR).get(ElementRef).nativeElement).toBe(divElement);
|
|
});
|
|
});
|
|
|
|
describe('ElementRef', () => {
|
|
|
|
it('should create directive with ElementRef dependencies', () => {
|
|
@Directive({selector: '[dir]'})
|
|
class MyDir {
|
|
value: string;
|
|
constructor(public elementRef: ElementRef) {
|
|
this.value = (elementRef.constructor as any).name;
|
|
}
|
|
}
|
|
|
|
@Directive({selector: '[otherDir]'})
|
|
class MyOtherDir {
|
|
isSameInstance: boolean;
|
|
constructor(public elementRef: ElementRef, public directive: MyDir) {
|
|
this.isSameInstance = elementRef === directive.elementRef;
|
|
}
|
|
}
|
|
|
|
@Component({template: '<div dir otherDir></div>'})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directive !: MyDir;
|
|
@ViewChild(MyOtherDir, {static: false}) otherDirective !: MyOtherDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyOtherDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const divElement = fixture.nativeElement.querySelector('div');
|
|
const directive = fixture.componentInstance.directive;
|
|
const otherDirective = fixture.componentInstance.otherDirective;
|
|
|
|
expect(directive.value).toContain('ElementRef');
|
|
expect(directive.elementRef.nativeElement).toEqual(divElement);
|
|
expect(otherDirective.elementRef.nativeElement).toEqual(divElement);
|
|
|
|
// Each ElementRef instance should be unique
|
|
expect(otherDirective.isSameInstance).toBe(false);
|
|
});
|
|
|
|
it('should create ElementRef with comment if requesting directive is on <ng-template> node',
|
|
() => {
|
|
@Directive({selector: '[dir]'})
|
|
class MyDir {
|
|
value: string;
|
|
constructor(public elementRef: ElementRef<Node>) {
|
|
this.value = (elementRef.constructor as any).name;
|
|
}
|
|
}
|
|
|
|
@Component({template: '<ng-template dir></ng-template>'})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directive !: MyDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const directive = fixture.componentInstance.directive;
|
|
|
|
expect(directive.value).toContain('ElementRef');
|
|
// the nativeElement should be a comment
|
|
expect(directive.elementRef.nativeElement.nodeType).toEqual(Node.COMMENT_NODE);
|
|
});
|
|
|
|
it('should be available if used in conjunction with other tokens', () => {
|
|
@Injectable()
|
|
class ServiceA {
|
|
subject: any;
|
|
constructor(protected zone: NgZone) {
|
|
this.subject = new BehaviorSubject<any>(1);
|
|
// trigger change detection
|
|
zone.run(() => { this.subject.next(2); });
|
|
}
|
|
}
|
|
|
|
@Directive({selector: '[dir]'})
|
|
class DirectiveA {
|
|
constructor(public service: ServiceA, public elementRef: ElementRef) {}
|
|
}
|
|
|
|
@Component({
|
|
selector: 'child',
|
|
template: `<div id="test-id" dir></div>`,
|
|
})
|
|
class ChildComp {
|
|
@ViewChild(DirectiveA, {static: false}) directive !: DirectiveA;
|
|
}
|
|
|
|
@Component({
|
|
selector: 'root',
|
|
template: '...',
|
|
})
|
|
class RootComp {
|
|
public childCompRef !: ComponentRef<ChildComp>;
|
|
|
|
constructor(
|
|
public factoryResolver: ComponentFactoryResolver, public vcr: ViewContainerRef) {}
|
|
|
|
create() {
|
|
const factory = this.factoryResolver.resolveComponentFactory(ChildComp);
|
|
this.childCompRef = this.vcr.createComponent(factory);
|
|
this.childCompRef.changeDetectorRef.detectChanges();
|
|
}
|
|
}
|
|
|
|
// this module is needed, so that View Engine can generate factory for ChildComp
|
|
@NgModule({
|
|
declarations: [DirectiveA, RootComp, ChildComp],
|
|
entryComponents: [RootComp, ChildComp],
|
|
})
|
|
class ModuleA {
|
|
}
|
|
|
|
TestBed.configureTestingModule({
|
|
imports: [ModuleA],
|
|
providers: [ServiceA],
|
|
});
|
|
|
|
const fixture = TestBed.createComponent(RootComp);
|
|
fixture.autoDetectChanges();
|
|
|
|
fixture.componentInstance.create();
|
|
|
|
const {elementRef} = fixture.componentInstance.childCompRef.instance.directive;
|
|
expect(elementRef.nativeElement.id).toBe('test-id');
|
|
});
|
|
});
|
|
|
|
describe('TemplateRef', () => {
|
|
|
|
@Directive({selector: '[dir]', exportAs: 'dir'})
|
|
class MyDir {
|
|
value: string;
|
|
constructor(public templateRef: TemplateRef<any>) {
|
|
this.value = (templateRef.constructor as any).name;
|
|
}
|
|
}
|
|
onlyInIvy('Ivy creates a unique instance of TemplateRef for each directive')
|
|
.it('should create directive with TemplateRef dependencies', () => {
|
|
@Directive({selector: '[otherDir]', exportAs: 'otherDir'})
|
|
class MyOtherDir {
|
|
isSameInstance: boolean;
|
|
constructor(public templateRef: TemplateRef<any>, public directive: MyDir) {
|
|
this.isSameInstance = templateRef === directive.templateRef;
|
|
}
|
|
}
|
|
|
|
@Component({
|
|
template: '<ng-template dir otherDir #dir="dir" #otherDir="otherDir"></ng-template>'
|
|
})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directive !: MyDir;
|
|
@ViewChild(MyOtherDir, {static: false}) otherDirective !: MyOtherDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyOtherDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const directive = fixture.componentInstance.directive;
|
|
const otherDirective = fixture.componentInstance.otherDirective;
|
|
|
|
expect(directive.value).toContain('TemplateRef');
|
|
expect(directive.templateRef).not.toBeNull();
|
|
expect(otherDirective.templateRef).not.toBeNull();
|
|
|
|
// Each TemplateRef instance should be unique
|
|
expect(otherDirective.isSameInstance).toBe(false);
|
|
});
|
|
|
|
it('should throw if injected on an element', () => {
|
|
@Component({template: '<div dir></div>'})
|
|
class MyComp {
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp]});
|
|
expect(() => TestBed.createComponent(MyComp)).toThrowError(/No provider for TemplateRef/);
|
|
});
|
|
|
|
it('should throw if injected on an ng-container', () => {
|
|
@Component({template: '<ng-container dir></ng-container>'})
|
|
class MyComp {
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp]});
|
|
expect(() => TestBed.createComponent(MyComp)).toThrowError(/No provider for TemplateRef/);
|
|
});
|
|
|
|
it('should NOT throw if optional and injected on an element', () => {
|
|
@Directive({selector: '[optionalDir]', exportAs: 'optionalDir'})
|
|
class OptionalDir {
|
|
constructor(@Optional() public templateRef: TemplateRef<any>) {}
|
|
}
|
|
@Component({template: '<div optionalDir></div>'})
|
|
class MyComp {
|
|
@ViewChild(OptionalDir, {static: false}) directive !: OptionalDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [OptionalDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
expect(fixture.componentInstance.directive.templateRef).toBeNull();
|
|
});
|
|
});
|
|
|
|
describe('ViewContainerRef', () => {
|
|
onlyInIvy('Ivy creates a unique instance of ViewContainerRef for each directive')
|
|
.it('should create directive with ViewContainerRef dependencies', () => {
|
|
@Directive({selector: '[dir]', exportAs: 'dir'})
|
|
class MyDir {
|
|
value: string;
|
|
constructor(public viewContainerRef: ViewContainerRef) {
|
|
this.value = (viewContainerRef.constructor as any).name;
|
|
}
|
|
}
|
|
@Directive({selector: '[otherDir]', exportAs: 'otherDir'})
|
|
class MyOtherDir {
|
|
isSameInstance: boolean;
|
|
constructor(public viewContainerRef: ViewContainerRef, public directive: MyDir) {
|
|
this.isSameInstance = viewContainerRef === directive.viewContainerRef;
|
|
}
|
|
}
|
|
@Component({template: '<div dir otherDir #dir="dir" #otherDir="otherDir"></div>'})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directive !: MyDir;
|
|
@ViewChild(MyOtherDir, {static: false}) otherDirective !: MyOtherDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyOtherDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const directive = fixture.componentInstance.directive;
|
|
const otherDirective = fixture.componentInstance.otherDirective;
|
|
|
|
expect(directive.value).toContain('ViewContainerRef');
|
|
expect(directive.viewContainerRef).not.toBeNull();
|
|
expect(otherDirective.viewContainerRef).not.toBeNull();
|
|
|
|
// Each ViewContainerRef instance should be unique
|
|
expect(otherDirective.isSameInstance).toBe(false);
|
|
});
|
|
|
|
it('should sync ViewContainerRef state between all injected instances', () => {
|
|
@Component({
|
|
selector: 'root',
|
|
template: `<ng-template #tmpl>Test</ng-template>`,
|
|
})
|
|
class Root {
|
|
@ViewChild(TemplateRef, {static: true})
|
|
tmpl !: TemplateRef<any>;
|
|
|
|
constructor(public vcr: ViewContainerRef, public vcr2: ViewContainerRef) {}
|
|
|
|
ngOnInit(): void { this.vcr.createEmbeddedView(this.tmpl); }
|
|
}
|
|
|
|
TestBed.configureTestingModule({
|
|
declarations: [Root],
|
|
});
|
|
|
|
const fixture = TestBed.createComponent(Root);
|
|
fixture.detectChanges();
|
|
const cmp = fixture.componentInstance;
|
|
|
|
expect(cmp.vcr.length).toBe(1);
|
|
expect(cmp.vcr2.length).toBe(1);
|
|
expect(cmp.vcr2.get(0)).toEqual(cmp.vcr.get(0));
|
|
|
|
cmp.vcr2.remove(0);
|
|
expect(cmp.vcr.length).toBe(0);
|
|
expect(cmp.vcr.get(0)).toBeNull();
|
|
});
|
|
});
|
|
|
|
describe('ChangeDetectorRef', () => {
|
|
|
|
@Directive({selector: '[dir]', exportAs: 'dir'})
|
|
class MyDir {
|
|
value: string;
|
|
constructor(public cdr: ChangeDetectorRef) { this.value = (cdr.constructor as any).name; }
|
|
}
|
|
@Directive({selector: '[otherDir]', exportAs: 'otherDir'})
|
|
class MyOtherDir {
|
|
constructor(public cdr: ChangeDetectorRef) {}
|
|
}
|
|
@Component({selector: 'my-comp', template: '<ng-content></ng-content>'})
|
|
class MyComp {
|
|
constructor(public cdr: ChangeDetectorRef) {}
|
|
}
|
|
|
|
it('should inject host component ChangeDetectorRef into directives on templates', () => {
|
|
let pipeInstance: MyPipe;
|
|
|
|
@Pipe({name: 'pipe'})
|
|
class MyPipe implements PipeTransform {
|
|
constructor(public cdr: ChangeDetectorRef) { pipeInstance = this; }
|
|
|
|
transform(value: any): any { return value; }
|
|
}
|
|
|
|
@Component({
|
|
selector: 'my-app',
|
|
template: `<div *ngIf="showing | pipe">Visible</div>`,
|
|
})
|
|
class MyApp {
|
|
showing = true;
|
|
|
|
constructor(public cdr: ChangeDetectorRef) {}
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyApp, MyPipe], imports: [CommonModule]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
fixture.detectChanges();
|
|
expect((pipeInstance !.cdr as ViewRef<MyApp>).context).toBe(fixture.componentInstance);
|
|
});
|
|
|
|
it('should inject current component ChangeDetectorRef into directives on the same node as components',
|
|
() => {
|
|
@Component({selector: 'my-app', template: '<my-comp dir otherDir #dir="dir"></my-comp>'})
|
|
class MyApp {
|
|
@ViewChild(MyComp, {static: false}) component !: MyComp;
|
|
@ViewChild(MyDir, {static: false}) directive !: MyDir;
|
|
@ViewChild(MyOtherDir, {static: false}) otherDirective !: MyOtherDir;
|
|
}
|
|
TestBed.configureTestingModule({declarations: [MyApp, MyComp, MyDir, MyOtherDir]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
fixture.detectChanges();
|
|
const app = fixture.componentInstance;
|
|
const comp = fixture.componentInstance.component;
|
|
expect((comp !.cdr as ViewRef<MyComp>).context).toBe(comp);
|
|
// ChangeDetectorRef is the token, ViewRef has historically been the constructor
|
|
expect(app.directive.value).toContain('ViewRef');
|
|
|
|
// Each ChangeDetectorRef instance should be unique
|
|
expect(app.directive !.cdr).not.toBe(comp !.cdr);
|
|
expect(app.directive !.cdr).not.toBe(app.otherDirective !.cdr);
|
|
});
|
|
|
|
it('should inject host component ChangeDetectorRef into directives on normal elements',
|
|
() => {
|
|
@Component({selector: 'my-comp', template: '<div dir otherDir #dir="dir"></div>'})
|
|
class MyComp {
|
|
constructor(public cdr: ChangeDetectorRef) {}
|
|
@ViewChild(MyDir, {static: false}) directive !: MyDir;
|
|
@ViewChild(MyOtherDir, {static: false}) otherDirective !: MyOtherDir;
|
|
}
|
|
TestBed.configureTestingModule({declarations: [MyComp, MyDir, MyOtherDir]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
const comp = fixture.componentInstance;
|
|
expect((comp !.cdr as ViewRef<MyComp>).context).toBe(comp);
|
|
// ChangeDetectorRef is the token, ViewRef has historically been the constructor
|
|
expect(comp.directive.value).toContain('ViewRef');
|
|
|
|
// Each ChangeDetectorRef instance should be unique
|
|
expect(comp.directive !.cdr).not.toBe(comp.cdr);
|
|
expect(comp.directive !.cdr).not.toBe(comp.otherDirective !.cdr);
|
|
});
|
|
|
|
it('should inject host component ChangeDetectorRef into directives in a component\'s ContentChildren',
|
|
() => {
|
|
@Component({
|
|
selector: 'my-app',
|
|
template: `<my-comp>
|
|
<div dir otherDir #dir="dir"></div>
|
|
</my-comp>
|
|
`
|
|
})
|
|
class MyApp {
|
|
constructor(public cdr: ChangeDetectorRef) {}
|
|
@ViewChild(MyComp, {static: false}) component !: MyComp;
|
|
@ViewChild(MyDir, {static: false}) directive !: MyDir;
|
|
@ViewChild(MyOtherDir, {static: false}) otherDirective !: MyOtherDir;
|
|
}
|
|
TestBed.configureTestingModule({declarations: [MyApp, MyComp, MyDir, MyOtherDir]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
fixture.detectChanges();
|
|
const app = fixture.componentInstance;
|
|
expect((app !.cdr as ViewRef<MyApp>).context).toBe(app);
|
|
const comp = fixture.componentInstance.component;
|
|
// ChangeDetectorRef is the token, ViewRef has historically been the constructor
|
|
expect(app.directive.value).toContain('ViewRef');
|
|
|
|
// Each ChangeDetectorRef instance should be unique
|
|
expect(app.directive !.cdr).not.toBe(comp.cdr);
|
|
expect(app.directive !.cdr).not.toBe(app.otherDirective !.cdr);
|
|
});
|
|
|
|
it('should inject host component ChangeDetectorRef into directives in embedded views', () => {
|
|
@Component({
|
|
selector: 'my-comp',
|
|
template: `<ng-container *ngIf="showing">
|
|
<div dir otherDir #dir="dir" *ngIf="showing"></div>
|
|
</ng-container>`
|
|
})
|
|
class MyComp {
|
|
showing = true;
|
|
constructor(public cdr: ChangeDetectorRef) {}
|
|
@ViewChild(MyDir, {static: false}) directive !: MyDir;
|
|
@ViewChild(MyOtherDir, {static: false}) otherDirective !: MyOtherDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyComp, MyDir, MyOtherDir]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
const comp = fixture.componentInstance;
|
|
expect((comp !.cdr as ViewRef<MyComp>).context).toBe(comp);
|
|
// ChangeDetectorRef is the token, ViewRef has historically been the constructor
|
|
expect(comp.directive.value).toContain('ViewRef');
|
|
|
|
// Each ChangeDetectorRef instance should be unique
|
|
expect(comp.directive !.cdr).not.toBe(comp.cdr);
|
|
expect(comp.directive !.cdr).not.toBe(comp.otherDirective !.cdr);
|
|
});
|
|
|
|
it('should inject host component ChangeDetectorRef into directives on containers', () => {
|
|
@Component(
|
|
{selector: 'my-comp', template: '<div dir otherDir #dir="dir" *ngIf="showing"></div>'})
|
|
class MyComp {
|
|
showing = true;
|
|
constructor(public cdr: ChangeDetectorRef) {}
|
|
@ViewChild(MyDir, {static: false}) directive !: MyDir;
|
|
@ViewChild(MyOtherDir, {static: false}) otherDirective !: MyOtherDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyComp, MyDir, MyOtherDir]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
const comp = fixture.componentInstance;
|
|
expect((comp !.cdr as ViewRef<MyComp>).context).toBe(comp);
|
|
// ChangeDetectorRef is the token, ViewRef has historically been the constructor
|
|
expect(comp.directive.value).toContain('ViewRef');
|
|
|
|
// Each ChangeDetectorRef instance should be unique
|
|
expect(comp.directive !.cdr).not.toBe(comp.cdr);
|
|
expect(comp.directive !.cdr).not.toBe(comp.otherDirective !.cdr);
|
|
});
|
|
|
|
it('should inject host component ChangeDetectorRef into directives on ng-container', () => {
|
|
let dirInstance: MyDirective;
|
|
|
|
@Directive({selector: '[getCDR]'})
|
|
class MyDirective {
|
|
constructor(public cdr: ChangeDetectorRef) { dirInstance = this; }
|
|
}
|
|
|
|
@Component({
|
|
selector: 'my-app',
|
|
template: `<ng-container getCDR>Visible</ng-container>`,
|
|
})
|
|
class MyApp {
|
|
constructor(public cdr: ChangeDetectorRef) {}
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyApp, MyDirective]});
|
|
const fixture = TestBed.createComponent(MyApp);
|
|
fixture.detectChanges();
|
|
expect((dirInstance !.cdr as ViewRef<MyApp>).context).toBe(fixture.componentInstance);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('string tokens', () => {
|
|
it('should be able to provide a string token', () => {
|
|
@Directive({selector: '[injectorDir]', providers: [{provide: 'test', useValue: 'provided'}]})
|
|
class InjectorDir {
|
|
constructor(@Inject('test') public value: string) {}
|
|
}
|
|
|
|
@Component({template: '<div injectorDir></div>'})
|
|
class MyComp {
|
|
@ViewChild(InjectorDir, {static: false}) injectorDirInstance !: InjectorDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [InjectorDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const injectorDir = fixture.componentInstance.injectorDirInstance;
|
|
|
|
expect(injectorDir.value).toBe('provided');
|
|
});
|
|
});
|
|
|
|
it('should not cause cyclic dependency if same token is requested in deps with @SkipSelf', () => {
|
|
@Component({
|
|
selector: 'my-comp',
|
|
template: '...',
|
|
providers: [{
|
|
provide: LOCALE_ID,
|
|
useFactory: () => 'ja-JP',
|
|
// Note: `LOCALE_ID` is also provided within APPLICATION_MODULE_PROVIDERS, so we use it here
|
|
// as a dep and making sure it doesn't cause cyclic dependency (since @SkipSelf is present)
|
|
deps: [[new Inject(LOCALE_ID), new Optional(), new SkipSelf()]]
|
|
}]
|
|
})
|
|
class MyComp {
|
|
constructor(@Inject(LOCALE_ID) public localeId: string) {}
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
expect(fixture.componentInstance.localeId).toBe('ja-JP');
|
|
});
|
|
|
|
it('module-level deps should not access Component/Directive providers', () => {
|
|
@Component({
|
|
selector: 'my-comp',
|
|
template: '...',
|
|
providers: [{
|
|
provide: 'LOCALE_ID_DEP', //
|
|
useValue: 'LOCALE_ID_DEP_VALUE'
|
|
}]
|
|
})
|
|
class MyComp {
|
|
constructor(@Inject(LOCALE_ID) public localeId: string) {}
|
|
}
|
|
|
|
TestBed.configureTestingModule({
|
|
declarations: [MyComp],
|
|
providers: [{
|
|
provide: LOCALE_ID,
|
|
// we expect `localeDepValue` to be undefined, since it's not provided at a module level
|
|
useFactory: (localeDepValue: any) => localeDepValue || 'en-GB',
|
|
deps: [[new Inject('LOCALE_ID_DEP'), new Optional()]]
|
|
}]
|
|
});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
expect(fixture.componentInstance.localeId).toBe('en-GB');
|
|
});
|
|
|
|
it('should skip current level while retrieving tokens if @SkipSelf is defined', () => {
|
|
@Component({
|
|
selector: 'my-comp',
|
|
template: '...',
|
|
providers: [{provide: LOCALE_ID, useFactory: () => 'en-GB'}]
|
|
})
|
|
class MyComp {
|
|
constructor(@SkipSelf() @Inject(LOCALE_ID) public localeId: string) {}
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
// takes `LOCALE_ID` from module injector, since we skip Component level with @SkipSelf
|
|
expect(fixture.componentInstance.localeId).toBe(DEFAULT_LOCALE_ID);
|
|
});
|
|
|
|
it('should work when injecting dependency in Directives', () => {
|
|
@Directive({
|
|
selector: '[dir]', //
|
|
providers: [{provide: LOCALE_ID, useValue: 'ja-JP'}]
|
|
})
|
|
class MyDir {
|
|
constructor(@SkipSelf() @Inject(LOCALE_ID) public localeId: string) {}
|
|
}
|
|
@Component({
|
|
selector: 'my-comp',
|
|
template: '<div dir></div>',
|
|
providers: [{provide: LOCALE_ID, useValue: 'en-GB'}]
|
|
})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) myDir !: MyDir;
|
|
constructor(@Inject(LOCALE_ID) public localeId: string) {}
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
expect(fixture.componentInstance.myDir.localeId).toBe('en-GB');
|
|
});
|
|
|
|
describe('@Attribute', () => {
|
|
|
|
it('should inject attributes', () => {
|
|
@Directive({selector: '[dir]'})
|
|
class MyDir {
|
|
constructor(
|
|
@Attribute('exist') public exist: string,
|
|
@Attribute('nonExist') public nonExist: string) {}
|
|
}
|
|
|
|
@Component({template: '<div dir exist="existValue" other="ignore"></div>'})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directiveInstance !: MyDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const directive = fixture.componentInstance.directiveInstance;
|
|
|
|
expect(directive.exist).toBe('existValue');
|
|
expect(directive.nonExist).toBeNull();
|
|
});
|
|
|
|
it('should inject attributes on <ng-template>', () => {
|
|
@Directive({selector: '[dir]'})
|
|
class MyDir {
|
|
constructor(
|
|
@Attribute('exist') public exist: string,
|
|
@Attribute('dir') public myDirectiveAttrValue: string) {}
|
|
}
|
|
|
|
@Component(
|
|
{template: '<ng-template dir="initial" exist="existValue" other="ignore"></ng-template>'})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directiveInstance !: MyDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const directive = fixture.componentInstance.directiveInstance;
|
|
|
|
expect(directive.exist).toBe('existValue');
|
|
expect(directive.myDirectiveAttrValue).toBe('initial');
|
|
});
|
|
|
|
it('should inject attributes on <ng-container>', () => {
|
|
@Directive({selector: '[dir]'})
|
|
class MyDir {
|
|
constructor(
|
|
@Attribute('exist') public exist: string,
|
|
@Attribute('dir') public myDirectiveAttrValue: string) {}
|
|
}
|
|
|
|
@Component({
|
|
template: '<ng-container dir="initial" exist="existValue" other="ignore"></ng-container>'
|
|
})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directiveInstance !: MyDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const directive = fixture.componentInstance.directiveInstance;
|
|
|
|
expect(directive.exist).toBe('existValue');
|
|
expect(directive.myDirectiveAttrValue).toBe('initial');
|
|
});
|
|
|
|
it('should be able to inject different kinds of attributes', () => {
|
|
@Directive({selector: '[dir]'})
|
|
class MyDir {
|
|
constructor(
|
|
@Attribute('class') public className: string,
|
|
@Attribute('style') public inlineStyles: string,
|
|
@Attribute('other-attr') public otherAttr: string) {}
|
|
}
|
|
|
|
@Component({
|
|
template:
|
|
'<div dir style="margin: 1px; color: red;" class="hello there" other-attr="value"></div>'
|
|
})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directiveInstance !: MyDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const directive = fixture.componentInstance.directiveInstance;
|
|
|
|
expect(directive.otherAttr).toBe('value');
|
|
expect(directive.className).toBe('hello there');
|
|
expect(directive.inlineStyles).toMatch(/color:\s*red/);
|
|
expect(directive.inlineStyles).toMatch(/margin:\s*1px/);
|
|
});
|
|
|
|
it('should not inject attributes with namespace', () => {
|
|
@Directive({selector: '[dir]'})
|
|
class MyDir {
|
|
constructor(
|
|
@Attribute('exist') public exist: string,
|
|
@Attribute('svg:exist') public namespacedExist: string,
|
|
@Attribute('other') public other: string) {}
|
|
}
|
|
|
|
@Component({
|
|
template: '<div dir exist="existValue" svg:exist="testExistValue" other="otherValue"></div>'
|
|
})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directiveInstance !: MyDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const directive = fixture.componentInstance.directiveInstance;
|
|
|
|
expect(directive.exist).toBe('existValue');
|
|
expect(directive.namespacedExist).toBeNull();
|
|
expect(directive.other).toBe('otherValue');
|
|
});
|
|
|
|
it('should not inject attributes representing bindings and outputs', () => {
|
|
@Directive({selector: '[dir]'})
|
|
class MyDir {
|
|
@Input() binding !: string;
|
|
@Output() output = new EventEmitter();
|
|
constructor(
|
|
@Attribute('exist') public exist: string,
|
|
@Attribute('binding') public bindingAttr: string,
|
|
@Attribute('output') public outputAttr: string,
|
|
@Attribute('other') public other: string) {}
|
|
}
|
|
|
|
@Component({
|
|
template:
|
|
'<div dir exist="existValue" [binding]="bindingValue" (output)="outputValue" other="otherValue" ignore="ignoreValue"></div>'
|
|
})
|
|
class MyComp {
|
|
@ViewChild(MyDir, {static: false}) directiveInstance !: MyDir;
|
|
}
|
|
|
|
TestBed.configureTestingModule({declarations: [MyDir, MyComp]});
|
|
const fixture = TestBed.createComponent(MyComp);
|
|
fixture.detectChanges();
|
|
|
|
const directive = fixture.componentInstance.directiveInstance;
|
|
|
|
expect(directive.exist).toBe('existValue');
|
|
expect(directive.bindingAttr).toBeNull();
|
|
expect(directive.outputAttr).toBeNull();
|
|
expect(directive.other).toBe('otherValue');
|
|
});
|
|
});
|
|
});
|