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7f5f4152 BJ |
1 | import { RecentVideosRecommendationService } from '@app/videos/recommendations/recent-videos-recommendation.service' |
2 | import { VideosProvider } from '@app/shared/video/video.service' | |
3 | import { EMPTY, of } from 'rxjs' | |
4 | import Mock = jest.Mock | |
5 | ||
6 | describe('"Recent Videos" Recommender', () => { | |
7 | describe('getRecommendations', () => { | |
8 | let videosService: VideosProvider | |
9 | let service: RecentVideosRecommendationService | |
10 | let getVideosMock: Mock<any> | |
11 | beforeEach(() => { | |
12 | getVideosMock = jest.fn(() => EMPTY) | |
13 | videosService = { | |
14 | getVideos: getVideosMock | |
15 | } | |
16 | service = new RecentVideosRecommendationService(videosService) | |
17 | }) | |
18 | it('should filter out the given UUID from the results', async (done) => { | |
19 | const vids = [ | |
20 | { uuid: 'uuid1' }, | |
21 | { uuid: 'uuid2' } | |
22 | ] | |
23 | getVideosMock.mockReturnValueOnce(of({ videos: vids })) | |
b0c36821 | 24 | const result = await service.getRecommendations({ uuid: 'uuid1' }).toPromise() |
7f5f4152 BJ |
25 | const uuids = result.map(v => v.uuid) |
26 | expect(uuids).toEqual(['uuid2']) | |
27 | done() | |
28 | }) | |
29 | it('should return 5 results when the given UUID is NOT in the first 5 results', async (done) => { | |
30 | const vids = [ | |
31 | { uuid: 'uuid2' }, | |
32 | { uuid: 'uuid3' }, | |
33 | { uuid: 'uuid4' }, | |
34 | { uuid: 'uuid5' }, | |
35 | { uuid: 'uuid6' }, | |
36 | { uuid: 'uuid7' } | |
37 | ] | |
38 | getVideosMock.mockReturnValueOnce(of({ videos: vids })) | |
b0c36821 | 39 | const result = await service.getRecommendations({ uuid: 'uuid1' }).toPromise() |
7f5f4152 BJ |
40 | expect(result.length).toEqual(5) |
41 | done() | |
42 | }) | |
43 | it('should return 5 results when the given UUID IS PRESENT in the first 5 results', async (done) => { | |
44 | const vids = [ | |
45 | { uuid: 'uuid1' }, | |
46 | { uuid: 'uuid2' }, | |
47 | { uuid: 'uuid3' }, | |
48 | { uuid: 'uuid4' }, | |
49 | { uuid: 'uuid5' }, | |
50 | { uuid: 'uuid6' } | |
51 | ] | |
52 | getVideosMock | |
53 | .mockReturnValueOnce(of({ videos: vids })) | |
b0c36821 | 54 | const result = await service.getRecommendations({ uuid: 'uuid1' }).toPromise() |
7f5f4152 BJ |
55 | expect(result.length).toEqual(5) |
56 | done() | |
57 | }) | |
58 | it('should fetch an extra result in case the given UUID is in the list', async (done) => { | |
b0c36821 | 59 | await service.getRecommendations({ uuid: 'uuid1' }).toPromise() |
7f5f4152 BJ |
60 | let expectedSize = service.pageSize + 1 |
61 | let params = { currentPage: jasmine.anything(), itemsPerPage: expectedSize } | |
62 | expect(getVideosMock).toHaveBeenCalledWith(params, jasmine.anything()) | |
63 | done() | |
64 | }) | |
65 | }) | |
66 | }) |