关于angular：没有AngularFirestore的提供者

No provider for AngularFirestore

我正在尝试使用Karma和Jasmine来测试使用Firestore的Angular5。但是，当我执行" ng测试"时，出现错误消息" NullInjectorError：AngularFirestore / AngularFireAuth / AuthService没有提供者！"。在NullInjectorError上的帖子：AngularFirestore的没有提供程序之后，我向app.module.ts中的提供程序添加了AngularFirestore，AngularFireAuth和AuthService，但这并不能解决问题。

app.module.ts：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { AuthService} from './core/auth.service';

// Routing and routes import
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';

// Authentication Module
import { CoreModule } from './core/core.module';

// Firebase imports
import { environment } from '../environments/environment';
import { AngularFireModule } from 'angularfire2';
import { AngularFirestoreModule } from 'angularfire2/firestore';
import { AngularFireAuthModule } from 'angularfire2/auth';
import { AngularFireAuth } from 'angularfire2/auth';
import { AngularFireStorageModule } from 'angularfire2/storage';
import { UserProfileComponent } from './user-profile/user-profile.component';
import { ProjectsComponent } from './projects/projects.component';
import { AngularFirestore } from 'angularfire2/firestore';

@NgModule({
declarations: [
AppComponent,
UserProfileComponent,
ProjectsComponent
],
imports: [
BrowserModule,
AppRoutingModule,
AngularFireModule.initializeApp(environment.firebase,"life-planner"),
AngularFirestoreModule,
AngularFireAuthModule,
AngularFireStorageModule,
FormsModule,
CoreModule,
AuthService,
AngularFirestore,
AngularFireAuth
],
providers: [
AngularFirestore,
AuthService,
AngularFireAuth,

],
bootstrap: [AppComponent]
})
export class AppModule { }

tsconfig.json

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

{
"compileOnSave": false,
"compilerOptions": {
"paths": {
"@angular/*": [
"../node_modules/@angular/*"
]
},
"outDir":"./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"moduleResolution":"node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"target":"es5",
"typeRoots": [
"node_modules/@types"
],
"lib": [
"es2017",
"dom"
]
}
}

app.component.spec.ts(测试代码)：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

import { TestBed, async } from '@angular/core/testing';
import { AppComponent } from './app.component';
import { RouterTestingModule } from '@angular/router/testing';
import {
AngularFirestore,
AngularFirestoreCollection,
AngularFirestoreDocument
} from 'angularfire2/firestore';
import { NgModule } from '@angular/core';

describe('AppComponent', () => {
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [ AppComponent ],
imports: [
RouterTestingModule
]
}).compileComponents();
}));
it('should create the app', async(() => {
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.debugElement.componentInstance;
expect(app).toBeTruthy();
}));
it(`should have as title 'app'`, async(() => {
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.debugElement.componentInstance;
expect(app.title).toEqual('app');
}));
it('should render title in a h1 tag', async(() => {
const fixture = TestBed.createComponent(AppComponent);
fixture.detectChanges();
const compiled = fixture.debugElement.nativeElement;
expect(compiled.querySelector('h1').textContent).toContain('Welcome to app!');
}));
});

感谢您的任何帮助，在此先感谢。