Write a unit test for the DataService in AngularJS

Question

In a unit test, what is the correct method to retrieve a service named 'Data'?

Accepted Answer

```typescript
import { TestBed, inject } from '@angular/core/testing';
import { DataService } from './data.service';

describe('DataService', () => {
  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [DataService]
    });
  });
});
```

Answer

```typescript
import { TestBed, inject } from '@angular/core/testing';

describe('DataService', () => {
  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [DataService]
    });
  });
});
```

Answer

```typescript
import { TestBed } from '@angular/core/testing';
import { inject } from '@angular/core';
import { DataService } from './data.service';

describe('DataService', () => {
  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [DataService]
    });
  });
});
```

Question from the Angular 4 (legacy) test

Write a unit test for the DataService in AngularJS