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| 1 | +import loadStudiesFromMDS from './MDSUtils'; |
| 2 | +import { mdsURL } from '../../../localconf'; |
| 3 | + |
| 4 | +global.fetch = jest.fn(); |
| 5 | + |
| 6 | +describe('MDS Data Loading Functions', () => { |
| 7 | + afterEach(() => { |
| 8 | + jest.clearAllMocks(); |
| 9 | + }); |
| 10 | + |
| 11 | + describe('loadStudiesFromMDS', () => { |
| 12 | + it('should load studies successfully with limit of 2000', async () => { |
| 13 | + const mockResponse = { |
| 14 | + 0: { gen3_discovery: { name: 'Study 1' } }, |
| 15 | + 1: { gen3_discovery: { name: 'Study 2' } }, |
| 16 | + }; |
| 17 | + fetch.mockResolvedValueOnce({ |
| 18 | + status: 200, |
| 19 | + json: jest.fn().mockResolvedValueOnce(mockResponse), |
| 20 | + }); |
| 21 | + const studies = await loadStudiesFromMDS(); |
| 22 | + expect(studies).toEqual([{ name: 'Study 1' }, { name: 'Study 2' }]); |
| 23 | + expect(fetch).toHaveBeenCalledTimes(1); |
| 24 | + expect(fetch).toHaveBeenCalledWith( |
| 25 | + `${mdsURL}?data=True&_guid_type=discovery_metadata&limit=2000&offset=0`, |
| 26 | + ); |
| 27 | + }); |
| 28 | + |
| 29 | + it('should load studies successfully with limit of 3 with loadAllMetadata false', async () => { |
| 30 | + const mockResponse = { |
| 31 | + 0: { gen3_discovery: { name: 'Study 1' } }, |
| 32 | + 1: { gen3_discovery: { name: 'Study 2' } }, |
| 33 | + 2: { gen3_discovery: { name: 'Study 3' } }, |
| 34 | + }; |
| 35 | + fetch.mockResolvedValueOnce({ |
| 36 | + status: 200, |
| 37 | + json: jest.fn().mockResolvedValueOnce(mockResponse), |
| 38 | + }); |
| 39 | + const studies = await loadStudiesFromMDS('discovery_metadata', 3, false); |
| 40 | + |
| 41 | + expect(fetch).toHaveBeenCalledTimes(1); |
| 42 | + expect(fetch).toHaveBeenCalledWith( |
| 43 | + `${mdsURL}?data=True&_guid_type=discovery_metadata&limit=3&offset=0`, |
| 44 | + ); |
| 45 | + expect(studies).toEqual([{ name: 'Study 1' },{ name: 'Study 2' },{ name: 'Study 3' }]); |
| 46 | + }); |
| 47 | + |
| 48 | + it('should throw an error on fetch failure', async () => { |
| 49 | + const mockResponse = { |
| 50 | + 0: { gen3_discovery: { name: 'Study 1' } }, |
| 51 | + 1: { gen3_discovery: { name: 'Study 2' } }, |
| 52 | + }; |
| 53 | + fetch.mockResolvedValueOnce({ |
| 54 | + status: 401, |
| 55 | + json: jest.fn().mockResolvedValueOnce(mockResponse), |
| 56 | + }); |
| 57 | + const expectedErrorMsg = 'Request for study data failed: Error'; |
| 58 | + let actualErrorMsg = null; |
| 59 | + try { |
| 60 | + await loadStudiesFromMDS(); |
| 61 | + } catch (e) { |
| 62 | + actualErrorMsg = e.message; |
| 63 | + } |
| 64 | + expect(actualErrorMsg.toString().includes(expectedErrorMsg)).toBe(true); |
| 65 | + }); |
| 66 | + |
| 67 | + it('should load up to 2000 studies, then load more with a secondary request', async () => { |
| 68 | + const mockStudies = new Array(2500).fill({ mockStudy: 'info' }); |
| 69 | + // Simulate first fetch (2000 studies) |
| 70 | + fetch.mockImplementationOnce(() => Promise.resolve({ |
| 71 | + status: 200, |
| 72 | + json: () => Promise.resolve(mockStudies.slice(0, 2000)), |
| 73 | + }), |
| 74 | + ); |
| 75 | + |
| 76 | + // Simulate second fetch (500 studies) |
| 77 | + fetch.mockImplementationOnce(() => Promise.resolve({ |
| 78 | + status: 200, |
| 79 | + json: () => Promise.resolve(mockStudies.slice(2000, 2500)), |
| 80 | + }), |
| 81 | + ); |
| 82 | + const studies = await loadStudiesFromMDS(); |
| 83 | + expect(fetch).toHaveBeenCalledTimes(2); |
| 84 | + expect(studies.length).toBe(2500); |
| 85 | + }); |
| 86 | + }); |
| 87 | +}); |
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