[英]Karma and Jasmine injected service test with Angular 7 - StaticInjectorError(DynamicTestModule)[I18n -> InjectionToken TranslationsFormat]
這不是對ngx-translate的欺騙-沒有InjectionToken DocumentToken的提供者
....或angular5 ng測試-來自自定義服務的StaticInjectorError
...這是一個稍微不同的問題,對我沒有幫助-https: //github.com/ngx-translate/i18n-polyfill/issues/4
使用Jasmine和Karma運行ngtest
時出現以下錯誤:
Error: StaticInjectorError(DynamicTestModule)[I18n -> InjectionToken TranslationsFormat]:
StaticInjectorError(Platform: core)[I18n -> InjectionToken TranslationsFormat]:
NullInjectorError: No provider for InjectionToken TranslationsFormat!
我的應用程序中有一個測試,用於測試主數據服務的創建:
data.service.spec.ts
import { TestBed, inject } from '@angular/core/testing';
import { DataService } from './data.service';
import { I18n } from '@ngx-translate/i18n-polyfill';
describe('DataService', () => {
beforeEach(() => {
TestBed.configureTestingModule({
providers: [DataService, I18n]
});
});
it('should be created', inject([DataService], (service: DataService) => {
expect(service).toBeTruthy();
}));
});
data.service.ts
import { Injectable } from '@angular/core';
import { I18n } from '@ngx-translate/i18n-polyfill';
@Injectable({
providedIn: 'root'
})
export class DataService {
SOME_CONSTANT = this.i18n('Translate this text');
constructor(private i18n: I18n, private authService: AuthService) {
...
}
public serviceMethod() {
return ...
}
}
app.module.ts
declare var require: any;
import { BrowserModule } from '@angular/platform-browser';
import { NgModule, LOCALE_ID, TRANSLATIONS, TRANSLATIONS_FORMAT } from '@angular/core';
import { HttpClientModule } from '@angular/common/http';
import { I18n } from '@ngx-translate/i18n-polyfill'; // polyfill to support i18n for text in .ts files (until supported by Angular)
import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';
import { LocaleService} from './services/locale.service';
import { SharedModule } from './shared/shared.module';
import { CoreModule } from './core/core.module';
defineLocale('engb', enGbLocale);
defineLocale('de', deLocale);
defineLocale('es', esLocale);
defineLocale('fr', frLocale);
defineLocale('zhcn', zhCnLocale);
defineLocale('ru', ruLocale);
/*
export function localeFactory(): string {
return LocaleDatePipe.localeId;
}
*/
export function selectedLocaleFactory(): string {
const localeService = new LocaleService();
return localeService.getCurrentLanguage();
}
@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
HttpClientModule,
CoreModule,
SharedModule,
AppRoutingModule
],
providers:
[
BsLocaleService,
I18n,
{
provide: TRANSLATIONS,
useFactory: (locale) => {
locale = locale || 'en'; // default to english if no locale provided
return require(`raw-loader!../locale/messages.${locale}.xlf`);
},
deps: [LOCALE_ID]
},
{
provide: TRANSLATIONS_FORMAT,
useValue: 'xlf'
},
{
provide: LOCALE_ID,
useFactory: selectedLocaleFactory
}
],
bootstrap: [AppComponent],
entryComponents: [ConfirmationComponent]
})
export class AppModule { }
app.component.ts
import { Component, OnInit, OnDestroy } from '@angular/core';
import { DataService } from './services/data.service';
import { BsLocaleService } from 'ngx-bootstrap/datepicker';
import { LocaleService } from './services/locale.service';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit, OnDestroy {
constructor(private dataService: DataService,
private localeService: LocaleService,
private bsLocaleService: BsLocaleService) { }
ngOnInit() {
... nothing relevant
}
}
UPDATE
如果我更改data.service.ts
以添加TRANSLATIONS_FORMAT導入,如下所示, data.service.ts
收到其他錯誤:
Error: Invalid provider for the NgModule 'DynamicTestModule' - only instances of Provider and Type are allowed, got: [DataService, AuthService, I18n, ?InjectionToken TranslationsFormat?, ...]
import { TestBed, inject } from '@angular/core/testing';
import { DataService } from './data.service';
import { AuthService } from './auth.service';
import { I18n } from '@ngx-translate/i18n-polyfill';
import { TRANSLATIONS, TRANSLATIONS_FORMAT } from '@angular/core';
describe('DataService', () => {
beforeEach(() => {
TestBed.configureTestingModule({
providers: [DataService, AuthService, I18n, TRANSLATIONS_FORMAT]
});
});
it('should be created', inject([DataService, AuthService, I18n, TRANSLATIONS_FORMAT], (service: DataService) => {
expect(service).toBeTruthy();
}));
});
在spec
文件中嘗試{provide: TRANSLATIONS_FORMAT, useValue: 'xlf' }
,如下所示:
TestBed.configureTestingModule({
providers: [DataService, AuthService, I18n,
{provide: TRANSLATIONS_FORMAT, useValue: 'xlf' }]
});
有關OP的答案,請參見@ShashankVivek的答案。 如果您收到與TRANSLATIONS
相關的后續錯誤,則需要以下步驟:
describe('DataService', () => {
beforeEach(() => {
TestBed.configureTestingModule({
providers: [DataService, AuthService, I18n,
{provide: TRANSLATIONS_FORMAT, useValue: 'xlf' },
{provide: TRANSLATIONS, useValue: 'xlf' }
]
});
});
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