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docs(Host): fix the API example (#11684)

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fixes #11681
This commit is contained in:
Victor Berchet
2016-09-18 15:56:13 -07:00
committed by Alex Eagle
parent df4254ae89
commit 54b41f57be
2 changed files with 20 additions and 13 deletions
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29
modules/@angular/examples/core/di/ts/metadata_spec.ts
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@ -7,7 +7,7 @@
*/
import {Component, Directive, Host, Inject, Injectable, Optional, ReflectiveInjector, Self, SkipSelf} from '@angular/core';
import {TestBed} from '@angular/core/testing';
import {ComponentFixture, TestBed} from '@angular/core/testing';
export function main() {
describe('di metadata examples', () => {
@ -140,26 +140,28 @@ export function main() {
@Directive({selector: 'child-directive'})
class ChildDirective {
logs: string[] = [];
constructor(@Optional() @Host() os: OtherService, @Optional() @Host() hs: HostService) {
console.log('os is null', os);
console.log('hs is NOT null', hs);
// os is null: true
this.logs.push(`os is null: ${os === null}`);
// hs is an instance of HostService: true
this.logs.push(`hs is an instance of HostService: ${hs instanceof HostService}`);
}
}
@Component({
selector: 'parent-cmp',
providers: [HostService],
template: `
Dir: <child-directive></child-directive>
`
viewProviders: [HostService],
template: '<child-directive></child-directive>',
})
class ParentCmp {
}
@Component({
selector: 'app',
providers: [OtherService],
template: `Parent: <parent-cmp></parent-cmp>`
viewProviders: [OtherService],
template: '<parent-cmp></parent-cmp>',
})
class App {
}
@ -168,7 +170,14 @@ export function main() {
TestBed.configureTestingModule({
declarations: [App, ParentCmp, ChildDirective],
});
expect(() => TestBed.createComponent(App)).not.toThrow();
let cmp: ComponentFixture<App>;
expect(() => cmp = TestBed.createComponent(App)).not.toThrow();
expect(cmp.debugElement.children[0].children[0].injector.get(ChildDirective).logs).toEqual([
'os is null: true',
'hs is an instance of HostService: true',
]);
});
});