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| 1 | +import { describe, it, expect, vi, beforeEach } from 'vitest'; |
| 2 | +import { GET } from './route'; |
| 3 | + |
| 4 | +vi.mock('@/lib/github', () => ({ |
| 5 | + getFullDashboardData: vi.fn(), |
| 6 | +})); |
| 7 | + |
| 8 | +import { getFullDashboardData } from '@/lib/github'; |
| 9 | + |
| 10 | +const makeRequest = (search: string) => new Request(`http://localhost:3000/api/compare?${search}`); |
| 11 | + |
| 12 | +describe('GET /api/compare', () => { |
| 13 | + beforeEach(() => { |
| 14 | + vi.clearAllMocks(); |
| 15 | + vi.mocked(getFullDashboardData).mockResolvedValue({ |
| 16 | + calendar: { totalContributions: 50, weeks: [] }, |
| 17 | + } as never); |
| 18 | + }); |
| 19 | + |
| 20 | + // ── Validation ──────────────────────────────────────────────────────────── |
| 21 | + |
| 22 | + it('returns 400 when user1 is missing', async () => { |
| 23 | + const res = await GET(makeRequest('user2=octocat')); |
| 24 | + expect(res.status).toBe(400); |
| 25 | + }); |
| 26 | + |
| 27 | + it('returns 400 when user2 is missing', async () => { |
| 28 | + const res = await GET(makeRequest('user1=octocat')); |
| 29 | + expect(res.status).toBe(400); |
| 30 | + }); |
| 31 | + |
| 32 | + it('returns 400 when both users are missing', async () => { |
| 33 | + const res = await GET(makeRequest('')); |
| 34 | + expect(res.status).toBe(400); |
| 35 | + }); |
| 36 | + |
| 37 | + it('returns 400 for invalid GitHub username format for user1', async () => { |
| 38 | + const res = await GET(makeRequest('user1=-invalid&user2=octocat')); |
| 39 | + expect(res.status).toBe(400); |
| 40 | + const data = await res.json(); |
| 41 | + expect(data.details.fieldErrors.user1).toBeDefined(); |
| 42 | + }); |
| 43 | + |
| 44 | + it('returns 400 for invalid GitHub username format for user2', async () => { |
| 45 | + const res = await GET(makeRequest('user1=octocat&user2=-invalid')); |
| 46 | + expect(res.status).toBe(400); |
| 47 | + const data = await res.json(); |
| 48 | + expect(data.details.fieldErrors.user2).toBeDefined(); |
| 49 | + }); |
| 50 | + |
| 51 | + it('returns 400 for username exceeding 39 characters', async () => { |
| 52 | + const res = await GET(makeRequest(`user1=${'a'.repeat(40)}&user2=octocat`)); |
| 53 | + expect(res.status).toBe(400); |
| 54 | + }); |
| 55 | + |
| 56 | + it('returns 400 when comparing a user with themselves', async () => { |
| 57 | + const res = await GET(makeRequest('user1=octocat&user2=octocat')); |
| 58 | + expect(res.status).toBe(400); |
| 59 | + const data = await res.json(); |
| 60 | + expect(data.details.fieldErrors.user2).toContain('Cannot compare a user with themselves.'); |
| 61 | + }); |
| 62 | + |
| 63 | + it('returns 400 for self-comparison regardless of case', async () => { |
| 64 | + const res = await GET(makeRequest('user1=OctoCat&user2=octocat')); |
| 65 | + expect(res.status).toBe(400); |
| 66 | + }); |
| 67 | + |
| 68 | + // ── Success ────────────────────────────────────────────────────────────── |
| 69 | + |
| 70 | + it('returns 200 with comparison data for valid users', async () => { |
| 71 | + const res = await GET(makeRequest('user1=alice&user2=bob')); |
| 72 | + expect(res.status).toBe(200); |
| 73 | + const data = await res.json(); |
| 74 | + expect(data.user1).toBeDefined(); |
| 75 | + expect(data.user2).toBeDefined(); |
| 76 | + }); |
| 77 | + |
| 78 | + // ── Error handling ──────────────────────────────────────────────────────── |
| 79 | + |
| 80 | + it('returns 404 when user1 is not found on GitHub', async () => { |
| 81 | + vi.mocked(getFullDashboardData).mockRejectedValueOnce(new Error('Not found')); |
| 82 | + const res = await GET(makeRequest('user1=ghost123&user2=octocat')); |
| 83 | + expect(res.status).toBe(404); |
| 84 | + }); |
| 85 | + |
| 86 | + it('returns 404 when user2 is not found on GitHub', async () => { |
| 87 | + vi.mocked(getFullDashboardData) |
| 88 | + .mockResolvedValueOnce({ calendar: { totalContributions: 0, weeks: [] } } as never) |
| 89 | + .mockRejectedValueOnce(new Error('Not found')); |
| 90 | + const res = await GET(makeRequest('user1=octocat&user2=ghost123')); |
| 91 | + expect(res.status).toBe(404); |
| 92 | + }); |
| 93 | + |
| 94 | + it('returns 403 when the user1 fetch hits a GitHub rate limit', async () => { |
| 95 | + vi.mocked(getFullDashboardData).mockRejectedValueOnce(new Error('API Rate Limit Exceeded')); |
| 96 | + |
| 97 | + const res = await GET(makeRequest('user1=octocat&user2=torvalds')); |
| 98 | + |
| 99 | + expect(res.status).toBe(403); |
| 100 | + const data = await res.json(); |
| 101 | + expect(data.error).toBe('GitHub API rate limit reached. Please configure GITHUB_TOKEN.'); |
| 102 | + }); |
| 103 | + |
| 104 | + it('returns 403 when the user2 fetch hits a GitHub rate limit', async () => { |
| 105 | + vi.mocked(getFullDashboardData) |
| 106 | + .mockResolvedValueOnce({ calendar: { totalContributions: 0, weeks: [] } } as never) |
| 107 | + .mockRejectedValueOnce(new Error('GitHub GraphQL API returned status 403')); |
| 108 | + |
| 109 | + const res = await GET(makeRequest('user1=octocat&user2=torvalds')); |
| 110 | + |
| 111 | + expect(res.status).toBe(403); |
| 112 | + const data = await res.json(); |
| 113 | + expect(data.error).toBe('GitHub API rate limit reached. Please configure GITHUB_TOKEN.'); |
| 114 | + }); |
| 115 | + |
| 116 | + it('returns 500 for non-rate-limit upstream failures instead of reporting not found', async () => { |
| 117 | + vi.mocked(getFullDashboardData).mockRejectedValueOnce( |
| 118 | + new Error('GitHub GraphQL API returned status 500') |
| 119 | + ); |
| 120 | + |
| 121 | + const res = await GET(makeRequest('user1=octocat&user2=torvalds')); |
| 122 | + |
| 123 | + expect(res.status).toBe(500); |
| 124 | + const data = await res.json(); |
| 125 | + expect(data.error).toContain('GitHub GraphQL API returned status 500'); |
| 126 | + }); |
| 127 | +}); |
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