angular-cn/packages/core/test/render3/providers_spec.ts

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/**
* @license
* Copyright Google LLC 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 as _Component, ComponentFactoryResolver, ElementRef, Injectable as _Injectable, InjectFlags, InjectionToken, InjectorType, Provider, RendererFactory2, Type, ViewContainerRef, ɵNgModuleDef as NgModuleDef, ɵɵdefineInjectable, ɵɵdefineInjector, ɵɵinject} from '../../src/core';
import {forwardRef} from '../../src/di/forward_ref';
import {createInjector} from '../../src/di/r3_injector';
import {injectComponentFactoryResolver, ɵɵdefineComponent, ɵɵdefineDirective, ɵɵdirectiveInject, ɵɵelement, ɵɵelementEnd, ɵɵelementStart, ɵɵgetInheritedFactory, ɵɵProvidersFeature, ɵɵtext, ɵɵtextInterpolate1} from '../../src/render3/index';
import {RenderFlags} from '../../src/render3/interfaces/definition';
import {NgModuleFactory} from '../../src/render3/ng_module_ref';
import {getInjector} from '../../src/render3/util/discovery_utils';
import {getRendererFactory2} from './imported_renderer2';
import {ComponentFixture} from './render_util';
const Component: typeof _Component = function(...args: any[]): any {
// In test we use @Component for documentation only so it's safe to mock out the implementation.
return () => undefined;
} as any;
const Injectable: typeof _Injectable = function(...args: any[]): any {
// In test we use @Injectable for documentation only so it's safe to mock out the implementation.
return () => undefined;
} as any;
describe('providers', () => {
describe('should support all types of Provider:', () => {
abstract class Greeter {
abstract greet: string;
}
const GREETER = new InjectionToken<Greeter>('greeter');
class GreeterClass implements Greeter {
greet = 'Class';
}
class GreeterDeps implements Greeter {
constructor(public greet: string) {}
}
class GreeterBuiltInDeps implements Greeter {
public greet: string;
constructor(private message: string, private elementRef: ElementRef) {
this.greet = this.message + ' from ' + this.elementRef.nativeElement.tagName;
}
}
class GreeterProvider {
provide() {
return 'Provided';
}
}
@Injectable()
class GreeterInj implements Greeter {
public greet: string;
constructor(private provider: GreeterProvider) {
this.greet = this.provider.provide();
}
static ɵprov = ɵɵdefineInjectable({
token: GreeterInj,
factory: () => new GreeterInj(ɵɵinject(GreeterProvider as any)),
});
}
it('TypeProvider', () => {
expectProvidersScenario({
parent: {
providers: [GreeterClass],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GreeterClass).greet).toEqual('Class');
}
}
});
});
it('ValueProvider', () => {
expectProvidersScenario({
parent: {
providers: [{provide: GREETER, useValue: {greet: 'Value'}}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Value');
}
}
});
});
it('ClassProvider', () => {
expectProvidersScenario({
parent: {
providers: [{provide: GREETER, useClass: GreeterClass}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Class');
}
}
});
});
it('ExistingProvider', () => {
expectProvidersScenario({
parent: {
providers: [GreeterClass, {provide: GREETER, useExisting: GreeterClass}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Class');
}
}
});
});
it('FactoryProvider', () => {
expectProvidersScenario({
parent: {
providers: [GreeterClass, {provide: GREETER, useFactory: () => new GreeterClass()}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Class');
}
}
});
});
const MESSAGE = new InjectionToken<string>('message');
it('ClassProvider with deps', () => {
expectProvidersScenario({
parent: {
providers: [
{provide: MESSAGE, useValue: 'Message'},
{provide: GREETER, useClass: GreeterDeps, deps: [MESSAGE]}
],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Message');
}
}
});
});
it('ClassProvider with built-in deps', () => {
expectProvidersScenario({
parent: {
providers: [
{provide: MESSAGE, useValue: 'Message'},
{provide: GREETER, useClass: GreeterBuiltInDeps, deps: [MESSAGE, ElementRef]}
],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Message from PARENT');
}
}
});
});
it('FactoryProvider with deps', () => {
expectProvidersScenario({
parent: {
providers: [
{provide: MESSAGE, useValue: 'Message'},
{provide: GREETER, useFactory: (msg: string) => new GreeterDeps(msg), deps: [MESSAGE]}
],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Message');
}
}
});
});
it('FactoryProvider with built-in deps', () => {
expectProvidersScenario({
parent: {
providers: [
{provide: MESSAGE, useValue: 'Message'}, {
provide: GREETER,
useFactory: (msg: string, elementRef: ElementRef) =>
new GreeterBuiltInDeps(msg, elementRef),
deps: [MESSAGE, ElementRef]
}
],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Message from PARENT');
}
}
});
});
it('ClassProvider with injectable', () => {
expectProvidersScenario({
parent: {
providers: [GreeterProvider, {provide: GREETER, useClass: GreeterInj}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Provided');
}
}
});
});
describe('forwardRef', () => {
it('forwardRef resolves later', (done) => {
setTimeout(() => {
expectProvidersScenario({
parent: {
providers: [forwardRef(() => ForLater)],
componentAssertion: () => {
expect(ɵɵdirectiveInject(ForLater) instanceof ForLater).toBeTruthy();
}
}
});
done();
}, 0);
});
class ForLater {}
// The following test that forwardRefs are called, so we don't search for an anon fn
it('ValueProvider wrapped in forwardRef', () => {
expectProvidersScenario({
parent: {
providers: [{
provide: GREETER,
useValue: forwardRef(() => {
return {greet: 'Value'};
})
}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Value');
}
}
});
});
it('ClassProvider wrapped in forwardRef', () => {
expectProvidersScenario({
parent: {
providers: [{provide: GREETER, useClass: forwardRef(() => GreeterClass)}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Class');
}
}
});
});
it('ExistingProvider wrapped in forwardRef', () => {
expectProvidersScenario({
parent: {
providers:
[GreeterClass, {provide: GREETER, useExisting: forwardRef(() => GreeterClass)}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(GREETER).greet).toEqual('Class');
}
}
});
});
it('@Inject annotation wrapped in forwardRef', () => {
// @Inject(forwardRef(() => GREETER))
expectProvidersScenario({
parent: {
providers: [{provide: GREETER, useValue: {greet: 'Value'}}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(forwardRef(() => GREETER)).greet).toEqual('Value');
}
}
});
});
});
});
/*
* All tests below assume this structure:
* ```
* <parent>
* <#VIEW#>
* <view-child>
* </view-child>
* </#VIEW#>
* <content-child>
* </content-child>
* </parent>
* ```
*/
describe('override rules:', () => {
it('directiveProviders should override providers', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'Message 1'}],
directiveProviders: [{provide: String, useValue: 'Message 2'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('Message 2');
}
}
});
});
it('viewProviders should override providers', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'Message 1'}],
viewProviders: [{provide: String, useValue: 'Message 2'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('Message 2');
}
}
});
});
it('viewProviders should override directiveProviders', () => {
expectProvidersScenario({
parent: {
directiveProviders: [{provide: String, useValue: 'Message 1'}],
viewProviders: [{provide: String, useValue: 'Message 2'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('Message 2');
}
}
});
});
it('last declared directive should override other directives', () => {
expectProvidersScenario({
parent: {
directive2Providers: [{provide: String, useValue: 'Message 1'}],
directiveProviders: [{provide: String, useValue: 'Message 2'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('Message 2');
}
}
});
});
it('last provider should override previous one in component providers', () => {
expectProvidersScenario({
parent: {
providers:
[{provide: String, useValue: 'Message 1'}, {provide: String, useValue: 'Message 2'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('Message 2');
}
}
});
});
it('last provider should override previous one in component view providers', () => {
expectProvidersScenario({
parent: {
viewProviders:
[{provide: String, useValue: 'Message 1'}, {provide: String, useValue: 'Message 2'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('Message 2');
}
}
});
});
it('last provider should override previous one in directive providers', () => {
expectProvidersScenario({
parent: {
directiveProviders:
[{provide: String, useValue: 'Message 1'}, {provide: String, useValue: 'Message 2'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('Message 2');
}
}
});
});
});
describe('single', () => {
class MyModule {
static ɵinj = ɵɵdefineInjector(
{factory: () => new MyModule(), providers: [{provide: String, useValue: 'From module'}]});
}
describe('without directives', () => {
it('should work without providers nor viewProviders in component', () => {
expectProvidersScenario({
parent: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From module');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From module');
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From module');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From module');
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From module');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From module');
}
},
ngModule: MyModule
});
});
it('should work with only providers in component', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'From providers'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From providers');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From providers');
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From providers');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From providers');
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From providers');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From providers');
}
},
ngModule: MyModule
});
});
it('should work with only viewProviders in component', () => {
expectProvidersScenario({
parent: {
viewProviders: [{provide: String, useValue: 'From viewProviders'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From module');
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From module');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From module');
}
},
ngModule: MyModule
});
});
it('should work with both providers and viewProviders in component', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'From providers'}],
viewProviders: [{provide: String, useValue: 'From viewProviders'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From providers');
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From providers');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From providers');
}
},
ngModule: MyModule
});
});
});
describe('with directives (order in ɵcmp.directives matters)', () => {
it('should work without providers nor viewProviders in component', () => {
expectProvidersScenario({
parent: {
directiveProviders: [{provide: String, useValue: 'From directive'}],
directive2Providers: [{provide: String, useValue: 'Never'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
ngModule: MyModule
});
});
it('should work with only providers in component', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'From providers'}],
directiveProviders: [{provide: String, useValue: 'From directive'}],
directive2Providers: [{provide: String, useValue: 'Never'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
ngModule: MyModule
});
});
it('should work with only viewProviders in component', () => {
expectProvidersScenario({
parent: {
viewProviders: [{provide: String, useValue: 'From viewProviders'}],
directiveProviders: [{provide: String, useValue: 'From directive'}],
directive2Providers: [{provide: String, useValue: 'Never'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
ngModule: MyModule
});
});
it('should work with both providers and viewProviders in component', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'From providers'}],
viewProviders: [{provide: String, useValue: 'From viewProviders'}],
directiveProviders: [{provide: String, useValue: 'From directive'}],
directive2Providers: [{provide: String, useValue: 'Never'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From viewProviders');
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('From directive');
}
},
ngModule: MyModule
});
});
});
});
describe('multi', () => {
class MyModule {
static ɵinj = ɵɵdefineInjector({
factory: () => new MyModule(),
providers: [{provide: String, useValue: 'From module', multi: true}]
});
}
describe('without directives', () => {
it('should work without providers nor viewProviders in component', () => {
expectProvidersScenario({
parent: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From module']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From module']);
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From module']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From module']);
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From module']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From module']);
}
},
ngModule: MyModule
});
});
it('should work with only providers in component', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'From providers', multi: true}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers']);
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers']);
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers']);
}
},
ngModule: MyModule
});
});
it('should work with only viewProviders in component', () => {
expectProvidersScenario({
parent: {
viewProviders: [{provide: String, useValue: 'From viewProviders', multi: true}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From viewProviders']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From module']);
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From viewProviders']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From viewProviders']);
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From module']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From module']);
}
},
ngModule: MyModule
});
});
it('should work with both providers and viewProviders in component', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'From providers', multi: true}],
viewProviders: [{provide: String, useValue: 'From viewProviders', multi: true}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers', 'From viewProviders']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers']);
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers', 'From viewProviders']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers', 'From viewProviders']);
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From providers']);
}
},
ngModule: MyModule
});
});
});
describe('with directives (order in ɵcmp.directives matters)', () => {
it('should work without providers nor viewProviders in component', () => {
expectProvidersScenario({
parent: {
directiveProviders: [{provide: String, useValue: 'From directive 1', multi: true}],
directive2Providers: [{provide: String, useValue: 'From directive 2', multi: true}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From directive 2', 'From directive 1']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From directive 2', 'From directive 1']);
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From directive 2', 'From directive 1']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From directive 2', 'From directive 1']);
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From directive 2', 'From directive 1']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From directive 2', 'From directive 1']);
}
},
ngModule: MyModule
});
});
it('should work with only providers in component', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'From providers', multi: true}],
directiveProviders: [{provide: String, useValue: 'From directive 1', multi: true}],
directive2Providers: [{provide: String, useValue: 'From directive 2', multi: true}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From directive 2', 'From directive 1'
]);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From directive 2', 'From directive 1'
]);
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From directive 2', 'From directive 1'
]);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From directive 2', 'From directive 1'
]);
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From directive 2', 'From directive 1'
]);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From directive 2', 'From directive 1'
]);
}
},
ngModule: MyModule
});
});
it('should work with only viewProviders in component', () => {
expectProvidersScenario({
parent: {
viewProviders: [{provide: String, useValue: 'From viewProviders', multi: true}],
directiveProviders: [{provide: String, useValue: 'From directive 1', multi: true}],
directive2Providers: [{provide: String, useValue: 'From directive 2', multi: true}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From viewProviders', 'From directive 2', 'From directive 1'
]);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From directive 2', 'From directive 1']);
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From viewProviders', 'From directive 2', 'From directive 1'
]);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From viewProviders', 'From directive 2', 'From directive 1'
]);
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From directive 2', 'From directive 1']);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual(['From directive 2', 'From directive 1']);
}
},
ngModule: MyModule
});
});
it('should work with both providers and viewProviders in component', () => {
expectProvidersScenario({
parent: {
providers: [{provide: String, useValue: 'From providers', multi: true}],
viewProviders: [{provide: String, useValue: 'From viewProviders', multi: true}],
directiveProviders: [{provide: String, useValue: 'From directive 1', multi: true}],
directive2Providers: [{provide: String, useValue: 'From directive 2', multi: true}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From viewProviders', 'From directive 2', 'From directive 1'
]);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From directive 2', 'From directive 1'
]);
}
},
viewChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From viewProviders', 'From directive 2', 'From directive 1'
]);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From viewProviders', 'From directive 2', 'From directive 1'
]);
}
},
contentChild: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From directive 2', 'From directive 1'
]);
},
directiveAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual([
'From providers', 'From directive 2', 'From directive 1'
]);
}
},
ngModule: MyModule
});
});
});
});
describe('tree-shakable injectables', () => {
it('should work with root', () => {
@Injectable({providedIn: 'root'})
class FooForRoot {
static ɵprov = ɵɵdefineInjectable({
token: FooForRoot,
factory: () => new FooForRoot(),
providedIn: 'root',
});
}
expectProvidersScenario({
parent: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(FooForRoot) instanceof FooForRoot).toBeTruthy();
}
}
});
});
it('should work with a module', () => {
class MyModule {
static ɵinj = ɵɵdefineInjector({
factory: () => new MyModule(),
providers: [{provide: String, useValue: 'From module'}]
});
}
@Injectable({providedIn: MyModule})
class FooForModule {
static ɵprov = ɵɵdefineInjectable({
token: FooForModule,
factory: () => new FooForModule(),
providedIn: MyModule,
});
}
expectProvidersScenario({
parent: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(FooForModule) instanceof FooForModule).toBeTruthy();
}
},
ngModule: MyModule
});
});
});
describe('- dynamic components dependency resolution', () => {
let hostComponent: HostComponent|null = null;
@Component({
template: `{{s}}`,
})
class EmbeddedComponent {
constructor(private s: String) {}
static ɵfac = () => new EmbeddedComponent(ɵɵdirectiveInject(String));
static ɵcmp = ɵɵdefineComponent({
type: EmbeddedComponent,
selectors: [['embedded-cmp']],
decls: 1,
vars: 1,
template:
(rf: RenderFlags, cmp: EmbeddedComponent) => {
if (rf & RenderFlags.Create) {
ɵɵtext(0);
}
if (rf & RenderFlags.Update) {
ɵɵtextInterpolate1('', cmp.s, '');
}
}
});
}
@Component({template: `foo`, providers: [{provide: String, useValue: 'From host component'}]})
class HostComponent {
constructor(public vcref: ViewContainerRef, public cfr: ComponentFactoryResolver) {}
static ɵfac = () => hostComponent = new HostComponent(
ɵɵdirectiveInject(ViewContainerRef as any), injectComponentFactoryResolver())
static ɵcmp = ɵɵdefineComponent({
type: HostComponent,
selectors: [['host-cmp']],
decls: 1,
vars: 0,
template:
(rf: RenderFlags, cmp: HostComponent) => {
if (rf & RenderFlags.Create) {
ɵɵtext(0, 'foo');
}
},
features:
[
ɵɵProvidersFeature([{provide: String, useValue: 'From host component'}]),
],
});
}
@Component({
template: `<host-cmp></host-cmp>`,
providers: [{provide: String, useValue: 'From app component'}]
})
class AppComponent {
constructor() {}
static ɵfac = () => new AppComponent();
static ɵcmp = ɵɵdefineComponent({
type: AppComponent,
selectors: [['app-cmp']],
decls: 1,
vars: 0,
template:
(rf: RenderFlags, cmp: AppComponent) => {
if (rf & RenderFlags.Create) {
ɵɵelement(0, 'host-cmp');
}
},
features:
[
ɵɵProvidersFeature([{provide: String, useValue: 'From app component'}]),
],
directives: [HostComponent]
});
}
it('should not cross the root view boundary, and use the root view injector', () => {
const fixture = new ComponentFixture(AppComponent);
expect(fixture.html).toEqual('<host-cmp>foo</host-cmp>');
hostComponent!.vcref.createComponent(
hostComponent!.cfr.resolveComponentFactory(EmbeddedComponent), undefined, {
get: (token: any, notFoundValue?: any) => {
return token === String ? 'From custom root view injector' : notFoundValue;
}
});
fixture.update();
expect(fixture.html)
.toEqual(
'<host-cmp>foo</host-cmp><embedded-cmp>From custom root view injector</embedded-cmp>');
});
it('should not cross the root view boundary, and use the module injector if no root view injector',
() => {
const fixture = new ComponentFixture(AppComponent);
expect(fixture.html).toEqual('<host-cmp>foo</host-cmp>');
class MyAppModule {
static ɵinj = ɵɵdefineInjector({
factory: () => new MyAppModule(),
imports: [],
providers:
[
{provide: RendererFactory2, useValue: getRendererFactory2(document)},
{provide: String, useValue: 'From module injector'}
]
});
static ɵmod: NgModuleDef<any> = {bootstrap: []} as any;
}
const myAppModuleFactory = new NgModuleFactory(MyAppModule);
const ngModuleRef = myAppModuleFactory.create(null);
hostComponent!.vcref.createComponent(
hostComponent!.cfr.resolveComponentFactory(EmbeddedComponent), undefined,
{get: (token: any, notFoundValue?: any) => notFoundValue}, undefined, ngModuleRef);
fixture.update();
expect(fixture.html)
.toMatch(
/<host-cmp>foo<\/host-cmp><embedded-cmp _nghost-[a-z]+-c(\d+)="">From module injector<\/embedded-cmp>/);
});
it('should cross the root view boundary to the parent of the host, thanks to the default root view injector',
() => {
const fixture = new ComponentFixture(AppComponent);
expect(fixture.html).toEqual('<host-cmp>foo</host-cmp>');
hostComponent!.vcref.createComponent(
hostComponent!.cfr.resolveComponentFactory(EmbeddedComponent));
fixture.update();
expect(fixture.html)
.toEqual('<host-cmp>foo</host-cmp><embedded-cmp>From app component</embedded-cmp>');
});
});
describe('deps boundary:', () => {
it('the deps of a token declared in providers should not be resolved with tokens from viewProviders',
() => {
@Injectable()
class MyService {
constructor(public value: String) {}
static ɵprov = ɵɵdefineInjectable({
token: MyService,
factory: () => new MyService(ɵɵinject(String)),
});
}
expectProvidersScenario({
parent: {
providers: [MyService, {provide: String, useValue: 'providers'}],
viewProviders: [{provide: String, useValue: 'viewProviders'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('viewProviders');
expect(ɵɵdirectiveInject(MyService).value).toEqual('providers');
}
}
});
});
it('should make sure that parent service does not see overrides in child directives', () => {
class Greeter {
static ɵprov = ɵɵdefineInjectable({
token: Greeter,
factory: () => new Greeter(ɵɵinject(String)),
});
constructor(public greeting: String) {}
}
expectProvidersScenario({
parent: {
providers: [Greeter, {provide: String, useValue: 'parent'}],
},
viewChild: {
providers: [{provide: String, useValue: 'view'}],
componentAssertion: () => {
expect(ɵɵdirectiveInject(Greeter).greeting).toEqual('parent');
},
},
});
});
});
describe('injection flags', () => {
class MyModule {
static ɵinj = ɵɵdefineInjector(
{factory: () => new MyModule(), providers: [{provide: String, useValue: 'Module'}]});
}
it('should not fall through to ModuleInjector if flags limit the scope', () => {
expectProvidersScenario({
ngModule: MyModule,
parent: {
componentAssertion: () => {
expect(ɵɵdirectiveInject(String)).toEqual('Module');
expect(ɵɵdirectiveInject(String, InjectFlags.Optional | InjectFlags.Self)).toBeNull();
expect(ɵɵdirectiveInject(String, InjectFlags.Optional | InjectFlags.Host)).toBeNull();
}
}
});
});
});
describe('from a node without injector', () => {
abstract class Some {
abstract location: String;
}
class SomeInj implements Some {
constructor(public location: String) {}
static ɵprov = ɵɵdefineInjectable({
token: SomeInj,
factory: () => new SomeInj(ɵɵinject(String)),
});
}
@Component({
template: `<p></p>`,
providers: [{provide: String, useValue: 'From my component'}],
viewProviders: [{provide: Number, useValue: 123}]
})
class MyComponent {
constructor() {}
static ɵfac = () => new MyComponent();
static ɵcmp = ɵɵdefineComponent({
type: MyComponent,
selectors: [['my-cmp']],
decls: 1,
vars: 0,
template:
(rf: RenderFlags, cmp: MyComponent) => {
if (rf & RenderFlags.Create) {
ɵɵelement(0, 'p');
}
},
features:
[
ɵɵProvidersFeature(
[{provide: String, useValue: 'From my component'}],
[{provide: Number, useValue: 123}]),
],
});
}
@Component({
template: `<my-cmp></my-cmp>`,
providers:
[{provide: String, useValue: 'From app component'}, {provide: Some, useClass: SomeInj}]
})
class AppComponent {
constructor() {}
static ɵfac = () => new AppComponent();
static ɵcmp = ɵɵdefineComponent({
type: AppComponent,
selectors: [['app-cmp']],
decls: 1,
vars: 0,
template:
(rf: RenderFlags, cmp: AppComponent) => {
if (rf & RenderFlags.Create) {
ɵɵelement(0, 'my-cmp');
}
},
features:
[
ɵɵProvidersFeature([
{provide: String, useValue: 'From app component'},
{provide: Some, useClass: SomeInj}
]),
],
directives: [MyComponent]
});
}
it('should work from within the template', () => {
const fixture = new ComponentFixture(AppComponent);
expect(fixture.html).toEqual('<my-cmp><p></p></my-cmp>');
const p = fixture.hostElement.querySelector('p');
const injector = getInjector(p as any);
expect(injector.get(Number)).toEqual(123);
expect(injector.get(String)).toEqual('From my component');
expect(injector.get(Some).location).toEqual('From app component');
});
it('should work from the host of the component', () => {
const fixture = new ComponentFixture(AppComponent);
expect(fixture.html).toEqual('<my-cmp><p></p></my-cmp>');
const myCmp = fixture.hostElement.querySelector('my-cmp');
const injector = getInjector(myCmp as any);
expect(injector.get(Number)).toEqual(123);
expect(injector.get(String)).toEqual('From my component');
expect(injector.get(Some).location).toEqual('From app component');
});
});
// Note: these tests check the behavior of `getInheritedFactory` specifically.
// Since `getInheritedFactory` is only generated in AOT, the tests can't be
// ported directly to TestBed while running in JIT mode.
describe('getInheritedFactory on class with custom decorator', () => {
function addFoo() {
return (constructor: Type<any>): any => {
const decoratedClass = class Extender extends constructor { foo = 'bar'; };
// On IE10 child classes don't inherit static properties by default. If we detect
// such a case, try to account for it so the tests are consistent between browsers.
if (Object.getPrototypeOf(decoratedClass) !== constructor) {
decoratedClass.prototype = constructor.prototype;
}
return decoratedClass;
};
}
it('should find the correct factories if a parent class has a custom decorator', () => {
class GrandParent {
static ɵfac = function GrandParent_Factory() {};
}
@addFoo()
class Parent extends GrandParent {
static ɵfac = function Parent_Factory() {};
}
class Child extends Parent {
static ɵfac = function Child_Factory() {};
}
expect(ɵɵgetInheritedFactory(Child).name).toBe('Parent_Factory');
expect(ɵɵgetInheritedFactory(Parent).name).toBe('GrandParent_Factory');
expect(ɵɵgetInheritedFactory(GrandParent).name).toBeFalsy();
});
it('should find the correct factories if a child class has a custom decorator', () => {
class GrandParent {
static ɵfac = function GrandParent_Factory() {};
}
class Parent extends GrandParent {
static ɵfac = function Parent_Factory() {};
}
@addFoo()
class Child extends Parent {
static ɵfac = function Child_Factory() {};
}
expect(ɵɵgetInheritedFactory(Child).name).toBe('Parent_Factory');
expect(ɵɵgetInheritedFactory(Parent).name).toBe('GrandParent_Factory');
expect(ɵɵgetInheritedFactory(GrandParent).name).toBeFalsy();
});
it('should find the correct factories if a grandparent class has a custom decorator', () => {
@addFoo()
class GrandParent {
static ɵfac = function GrandParent_Factory() {};
}
class Parent extends GrandParent {
static ɵfac = function Parent_Factory() {};
}
class Child extends Parent {
static ɵfac = function Child_Factory() {};
}
expect(ɵɵgetInheritedFactory(Child).name).toBe('Parent_Factory');
expect(ɵɵgetInheritedFactory(Parent).name).toBe('GrandParent_Factory');
expect(ɵɵgetInheritedFactory(GrandParent).name).toBeFalsy();
});
it('should find the correct factories if all classes have a custom decorator', () => {
@addFoo()
class GrandParent {
static ɵfac = function GrandParent_Factory() {};
}
@addFoo()
class Parent extends GrandParent {
static ɵfac = function Parent_Factory() {};
}
@addFoo()
class Child extends Parent {
static ɵfac = function Child_Factory() {};
}
expect(ɵɵgetInheritedFactory(Child).name).toBe('Parent_Factory');
expect(ɵɵgetInheritedFactory(Parent).name).toBe('GrandParent_Factory');
expect(ɵɵgetInheritedFactory(GrandParent).name).toBeFalsy();
});
it('should find the correct factories if parent and grandparent classes have a custom decorator',
() => {
@addFoo()
class GrandParent {
static ɵfac = function GrandParent_Factory() {};
}
@addFoo()
class Parent extends GrandParent {
static ɵfac = function Parent_Factory() {};
}
class Child extends Parent {
static ɵfac = function Child_Factory() {};
}
expect(ɵɵgetInheritedFactory(Child).name).toBe('Parent_Factory');
expect(ɵɵgetInheritedFactory(Parent).name).toBe('GrandParent_Factory');
expect(ɵɵgetInheritedFactory(GrandParent).name).toBeFalsy();
});
});
});
interface ComponentTest {
providers?: Provider[];
viewProviders?: Provider[];
directiveProviders?: Provider[];
directive2Providers?: Provider[];
directiveAssertion?: () => void;
componentAssertion?: () => void;
}
function expectProvidersScenario(defs: {
app?: ComponentTest,
parent?: ComponentTest,
viewChild?: ComponentTest,
contentChild?: ComponentTest,
ngModule?: InjectorType<any>,
}): void {
function testComponentInjection<T>(def: ComponentTest|undefined, instance: T): T {
if (def) {
def.componentAssertion && def.componentAssertion();
}
return instance;
}
function testDirectiveInjection<T>(def: ComponentTest|undefined, instance: T): T {
if (def) {
def.directiveAssertion && def.directiveAssertion();
}
return instance;
}
class ViewChildComponent {
static ɵfac = () => testComponentInjection(defs.viewChild, new ViewChildComponent());
static ɵcmp = ɵɵdefineComponent({
type: ViewChildComponent,
selectors: [['view-child']],
decls: 1,
vars: 0,
template:
function(fs: RenderFlags, ctx: ViewChildComponent) {
if (fs & RenderFlags.Create) {
ɵɵtext(0, 'view-child');
}
},
features: defs.viewChild &&
[ɵɵProvidersFeature(defs.viewChild.providers || [], defs.viewChild.viewProviders || [])]
});
}
class ViewChildDirective {
static ɵfac = () => testDirectiveInjection(defs.viewChild, new ViewChildDirective());
static ɵdir = ɵɵdefineDirective({
type: ViewChildDirective,
selectors: [['view-child']],
features: defs.viewChild && [ɵɵProvidersFeature(defs.viewChild.directiveProviders || [])],
});
}
class ContentChildComponent {
static ɵfac =
() => {
return testComponentInjection(defs.contentChild, new ContentChildComponent());
}
static ɵcmp = ɵɵdefineComponent({
type: ContentChildComponent,
selectors: [['content-child']],
decls: 1,
vars: 0,
template:
function(fs: RenderFlags, ctx: ParentComponent) {
if (fs & RenderFlags.Create) {
ɵɵtext(0, 'content-child');
}
},
features: defs.contentChild &&
[ɵɵProvidersFeature(
defs.contentChild.providers || [], defs.contentChild.viewProviders || [])],
});
}
class ContentChildDirective {
static ɵfac =
() => {
return testDirectiveInjection(defs.contentChild, new ContentChildDirective());
}
static ɵdir = ɵɵdefineDirective({
type: ContentChildDirective,
selectors: [['content-child']],
features: defs.contentChild &&
[ɵɵProvidersFeature(defs.contentChild.directiveProviders || [])],
});
}
class ParentComponent {
static ɵfac = () => testComponentInjection(defs.parent, new ParentComponent());
static ɵcmp = ɵɵdefineComponent({
type: ParentComponent,
selectors: [['parent']],
decls: 1,
vars: 0,
template:
function(fs: RenderFlags, ctx: ParentComponent) {
if (fs & RenderFlags.Create) {
ɵɵelement(0, 'view-child');
}
},
features: defs.parent &&
[ɵɵProvidersFeature(defs.parent.providers || [], defs.parent.viewProviders || [])],
directives: [ViewChildComponent, ViewChildDirective]
});
}
class ParentDirective {
static ɵfac = () => testDirectiveInjection(defs.parent, new ParentDirective());
static ɵdir = ɵɵdefineDirective({
type: ParentDirective,
selectors: [['parent']],
features: defs.parent && [ɵɵProvidersFeature(defs.parent.directiveProviders || [])],
});
}
class ParentDirective2 {
static ɵfac = () => testDirectiveInjection(defs.parent, new ParentDirective2());
static ɵdir = ɵɵdefineDirective({
type: ParentDirective2,
selectors: [['parent']],
features: defs.parent && [ɵɵProvidersFeature(defs.parent.directive2Providers || [])],
});
}
class App {
static ɵfac = () => testComponentInjection(defs.app, new App());
static ɵcmp = ɵɵdefineComponent({
type: App,
selectors: [['app']],
decls: 2,
vars: 0,
template:
function(fs: RenderFlags, ctx: App) {
if (fs & RenderFlags.Create) {
ɵɵelementStart(0, 'parent');
ɵɵelement(1, 'content-child');
ɵɵelementEnd();
}
},
features: defs.app &&
[ɵɵProvidersFeature(defs.app.providers || [], defs.app.viewProviders || [])],
directives:
[
ParentComponent, ParentDirective2, ParentDirective, ContentChildComponent,
ContentChildDirective
]
});
}
const fixture = new ComponentFixture(
App, {injector: defs.ngModule ? createInjector(defs.ngModule) : undefined});
expect(fixture.html).toEqual('<parent><view-child>view-child</view-child></parent>');
}