angular-cn/packages/common/test/directives/ng_component_outlet_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 {CommonModule} from '@angular/common';
import {NgComponentOutlet} from '@angular/common/src/directives/ng_component_outlet';
import {Compiler, Component, ComponentRef, Inject, InjectionToken, Injector, NO_ERRORS_SCHEMA, NgModule, NgModuleFactory, Optional, QueryList, StaticProvider, TemplateRef, Type, ViewChild, ViewChildren, ViewContainerRef} from '@angular/core';
import {TestBed, async, fakeAsync} from '@angular/core/testing';
import {expect} from '@angular/platform-browser/testing/src/matchers';
{
describe('insert/remove', () => {
beforeEach(() => { TestBed.configureTestingModule({imports: [TestModule]}); });
it('should do nothing if component is null', async(() => {
const template = `<ng-template *ngComponentOutlet="currentComponent"></ng-template>`;
TestBed.overrideComponent(TestComponent, {set: {template: template}});
let fixture = TestBed.createComponent(TestComponent);
fixture.componentInstance.currentComponent = null;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
}));
it('should insert content specified by a component', async(() => {
let fixture = TestBed.createComponent(TestComponent);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
fixture.componentInstance.currentComponent = InjectedComponent;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('foo');
}));
it('should emit a ComponentRef once a component was created', async(() => {
let fixture = TestBed.createComponent(TestComponent);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
fixture.componentInstance.cmpRef = null;
fixture.componentInstance.currentComponent = InjectedComponent;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('foo');
expect(fixture.componentInstance.cmpRef).toBeAnInstanceOf(ComponentRef);
expect(fixture.componentInstance.cmpRef !.instance).toBeAnInstanceOf(InjectedComponent);
}));
it('should clear view if component becomes null', async(() => {
let fixture = TestBed.createComponent(TestComponent);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
fixture.componentInstance.currentComponent = InjectedComponent;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('foo');
fixture.componentInstance.currentComponent = null;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
}));
it('should swap content if component changes', async(() => {
let fixture = TestBed.createComponent(TestComponent);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
fixture.componentInstance.currentComponent = InjectedComponent;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('foo');
fixture.componentInstance.currentComponent = InjectedComponentAgain;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('bar');
}));
it('should use the injector, if one supplied', async(() => {
let fixture = TestBed.createComponent(TestComponent);
const uniqueValue = {};
fixture.componentInstance.currentComponent = InjectedComponent;
fixture.componentInstance.injector = Injector.create(
[{provide: TEST_TOKEN, useValue: uniqueValue}], fixture.componentRef.injector);
fixture.detectChanges();
let cmpRef: ComponentRef<InjectedComponent> = fixture.componentInstance.cmpRef !;
expect(cmpRef).toBeAnInstanceOf(ComponentRef);
expect(cmpRef.instance).toBeAnInstanceOf(InjectedComponent);
expect(cmpRef.instance.testToken).toBe(uniqueValue);
}));
it('should resolve a with injector', async(() => {
let fixture = TestBed.createComponent(TestComponent);
fixture.componentInstance.cmpRef = null;
fixture.componentInstance.currentComponent = InjectedComponent;
fixture.detectChanges();
let cmpRef: ComponentRef<InjectedComponent> = fixture.componentInstance.cmpRef !;
expect(cmpRef).toBeAnInstanceOf(ComponentRef);
expect(cmpRef.instance).toBeAnInstanceOf(InjectedComponent);
expect(cmpRef.instance.testToken).toBeNull();
}));
it('should render projectable nodes, if supplied', async(() => {
const template = `<ng-template>projected foo</ng-template>${TEST_CMP_TEMPLATE}`;
TestBed.overrideComponent(TestComponent, {set: {template: template}})
.configureTestingModule({schemas: [NO_ERRORS_SCHEMA]});
TestBed
.overrideComponent(InjectedComponent, {set: {template: `<ng-content></ng-content>`}})
.configureTestingModule({schemas: [NO_ERRORS_SCHEMA]});
let fixture = TestBed.createComponent(TestComponent);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
fixture.componentInstance.currentComponent = InjectedComponent;
fixture.componentInstance.projectables =
[fixture.componentInstance.vcRef
.createEmbeddedView(fixture.componentInstance.tplRefs.first)
.rootNodes];
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('projected foo');
}));
it('should resolve components from other modules, if supplied', async(() => {
const compiler = TestBed.get(Compiler) as Compiler;
let fixture = TestBed.createComponent(TestComponent);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
fixture.componentInstance.module = compiler.compileModuleSync(TestModule2);
fixture.componentInstance.currentComponent = Module2InjectedComponent;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('baz');
}));
it('should clean up moduleRef, if supplied', async(() => {
let destroyed = false;
const compiler = TestBed.get(Compiler) as Compiler;
const fixture = TestBed.createComponent(TestComponent);
fixture.componentInstance.module = compiler.compileModuleSync(TestModule2);
fixture.componentInstance.currentComponent = Module2InjectedComponent;
fixture.detectChanges();
const moduleRef = fixture.componentInstance.ngComponentOutlet['_moduleRef'];
spyOn(moduleRef, 'destroy').and.callThrough();
expect(moduleRef !.destroy).not.toHaveBeenCalled();
fixture.destroy();
expect(moduleRef !.destroy).toHaveBeenCalled();
}));
it('should not re-create moduleRef when it didn\'t actually change', async(() => {
const compiler = TestBed.get(Compiler) as Compiler;
const fixture = TestBed.createComponent(TestComponent);
fixture.componentInstance.module = compiler.compileModuleSync(TestModule2);
fixture.componentInstance.currentComponent = Module2InjectedComponent;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('baz');
const moduleRef = fixture.componentInstance.ngComponentOutlet['_moduleRef'];
fixture.componentInstance.currentComponent = Module2InjectedComponent2;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('baz2');
expect(moduleRef).toBe(fixture.componentInstance.ngComponentOutlet['_moduleRef']);
}));
it('should re-create moduleRef when changed', async(() => {
const compiler = TestBed.get(Compiler) as Compiler;
const fixture = TestBed.createComponent(TestComponent);
fixture.componentInstance.module = compiler.compileModuleSync(TestModule2);
fixture.componentInstance.currentComponent = Module2InjectedComponent;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('baz');
fixture.componentInstance.module = compiler.compileModuleSync(TestModule3);
fixture.componentInstance.currentComponent = Module3InjectedComponent;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('bat');
}));
});
}
feat(core): Add type information to injector.get() (#13785) - Introduce `InjectionToken<T>` which is a parameterized and type-safe version of `OpaqueToken`. DEPRECATION: - `OpaqueToken` is now deprecated, use `InjectionToken<T>` instead. - `Injector.get(token: any, notFoundValue?: any): any` is now deprecated use the same method which is now overloaded as `Injector.get<T>(token: Type<T>|InjectionToken<T>, notFoundValue?: T): T;`. Migration - Replace `OpaqueToken` with `InjectionToken<?>` and parameterize it. - Migrate your code to only use `Type<?>` or `InjectionToken<?>` as injection tokens. Using other tokens will not be supported in the future. BREAKING CHANGE: - Because `injector.get()` is now parameterize it is possible that code which used to work no longer type checks. Example would be if one injects `Foo` but configures it as `{provide: Foo, useClass: MockFoo}`. The injection instance will be that of `MockFoo` but the type will be `Foo` instead of `any` as in the past. This means that it was possible to call a method on `MockFoo` in the past which now will fail type check. See this example: ``` class Foo {} class MockFoo extends Foo { setupMock(); } var PROVIDERS = [ {provide: Foo, useClass: MockFoo} ]; ... function myTest(injector: Injector) { var foo = injector.get(Foo); // This line used to work since `foo` used to be `any` before this // change, it will now be `Foo`, and `Foo` does not have `setUpMock()`. // The fix is to downcast: `injector.get(Foo) as MockFoo`. foo.setUpMock(); } ``` PR Close #13785
2017-01-03 19:54:46 -05:00
const TEST_TOKEN = new InjectionToken('TestToken');
@Component({selector: 'injected-component', template: 'foo'})
class InjectedComponent {
constructor(@Optional() @Inject(TEST_TOKEN) public testToken: any) {}
}
@Component({selector: 'injected-component-again', template: 'bar'})
class InjectedComponentAgain {
}
const TEST_CMP_TEMPLATE =
`<ng-template *ngComponentOutlet="currentComponent; injector: injector; content: projectables; ngModuleFactory: module;"></ng-template>`;
@Component({selector: 'test-cmp', template: TEST_CMP_TEMPLATE})
class TestComponent {
currentComponent: Type<any>|null;
injector: Injector;
projectables: any[][];
module: NgModuleFactory<any>;
get cmpRef(): ComponentRef<any>|null { return this.ngComponentOutlet['_componentRef']; }
set cmpRef(value: ComponentRef<any>|null) { this.ngComponentOutlet['_componentRef'] = value; }
@ViewChildren(TemplateRef) tplRefs: QueryList<TemplateRef<any>>;
@ViewChild(NgComponentOutlet) ngComponentOutlet: NgComponentOutlet;
constructor(public vcRef: ViewContainerRef) {}
}
@NgModule({
imports: [CommonModule],
declarations: [TestComponent, InjectedComponent, InjectedComponentAgain],
exports: [TestComponent, InjectedComponent, InjectedComponentAgain],
entryComponents: [InjectedComponent, InjectedComponentAgain]
})
export class TestModule {
}
@Component({selector: 'module-2-injected-component', template: 'baz'})
class Module2InjectedComponent {
}
@Component({selector: 'module-2-injected-component-2', template: 'baz2'})
class Module2InjectedComponent2 {
}
@NgModule({
imports: [CommonModule],
declarations: [Module2InjectedComponent, Module2InjectedComponent2],
exports: [Module2InjectedComponent, Module2InjectedComponent2],
entryComponents: [Module2InjectedComponent, Module2InjectedComponent2]
})
export class TestModule2 {
}
@Component({selector: 'module-3-injected-component', template: 'bat'})
class Module3InjectedComponent {
}
@NgModule({
imports: [CommonModule],
declarations: [Module3InjectedComponent],
exports: [Module3InjectedComponent],
entryComponents: [Module3InjectedComponent]
})
export class TestModule3 {
}