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| 1 | +import { renderHook, act } from '@testing-library/react'; |
| 2 | +import Pagination from '../../components/Pagination'; |
| 3 | + |
| 4 | +describe('Pagination', () => { |
| 5 | + test('initializes with correct values', () => { |
| 6 | + const { result } = renderHook(() => |
| 7 | + Pagination({ contentPerPage: 10, count: 100 }), |
| 8 | + ); |
| 9 | + |
| 10 | + expect(result.current.totalPages).toBe(10); |
| 11 | + expect(result.current.page).toBe(1); |
| 12 | + expect(result.current.firstContentIndex).toBe(0); |
| 13 | + expect(result.current.lastContentIndex).toBe(10); |
| 14 | + }); |
| 15 | + |
| 16 | + test('changes page correctly', () => { |
| 17 | + const { result } = renderHook(() => |
| 18 | + Pagination({ contentPerPage: 10, count: 100 }), |
| 19 | + ); |
| 20 | + |
| 21 | + act(() => { |
| 22 | + result.current.nextPage(); |
| 23 | + }); |
| 24 | + |
| 25 | + expect(result.current.page).toBe(2); |
| 26 | + expect(result.current.firstContentIndex).toBe(10); |
| 27 | + expect(result.current.lastContentIndex).toBe(20); |
| 28 | + |
| 29 | + act(() => { |
| 30 | + result.current.prevPage(); |
| 31 | + }); |
| 32 | + |
| 33 | + expect(result.current.page).toBe(1); |
| 34 | + expect(result.current.firstContentIndex).toBe(0); |
| 35 | + expect(result.current.lastContentIndex).toBe(10); |
| 36 | + }); |
| 37 | + |
| 38 | + test('does not go below page 1', () => { |
| 39 | + const { result } = renderHook(() => |
| 40 | + Pagination({ contentPerPage: 10, count: 100 }), |
| 41 | + ); |
| 42 | + |
| 43 | + act(() => { |
| 44 | + result.current.prevPage(); |
| 45 | + }); |
| 46 | + |
| 47 | + expect(result.current.page).toBe(1); |
| 48 | + }); |
| 49 | + |
| 50 | + test('does not go above max pages', () => { |
| 51 | + const { result } = renderHook(() => |
| 52 | + Pagination({ contentPerPage: 10, count: 100 }), |
| 53 | + ); |
| 54 | + |
| 55 | + act(() => { |
| 56 | + result.current.setPage(10); |
| 57 | + result.current.nextPage(); |
| 58 | + }); |
| 59 | + |
| 60 | + expect(result.current.page).toBe(10); |
| 61 | + }); |
| 62 | + |
| 63 | + test('setPage works correctly', () => { |
| 64 | + const { result } = renderHook(() => |
| 65 | + Pagination({ contentPerPage: 10, count: 100 }), |
| 66 | + ); |
| 67 | + |
| 68 | + act(() => { |
| 69 | + result.current.setPage(5); |
| 70 | + }); |
| 71 | + |
| 72 | + expect(result.current.page).toBe(5); |
| 73 | + expect(result.current.firstContentIndex).toBe(40); |
| 74 | + expect(result.current.lastContentIndex).toBe(50); |
| 75 | + }); |
| 76 | + |
| 77 | + test('handles edge cases in setPage', () => { |
| 78 | + const { result } = renderHook(() => |
| 79 | + Pagination({ contentPerPage: 10, count: 100 }), |
| 80 | + ); |
| 81 | + |
| 82 | + act(() => { |
| 83 | + result.current.setPage(0); |
| 84 | + }); |
| 85 | + |
| 86 | + expect(result.current.page).toBe(1); |
| 87 | + |
| 88 | + act(() => { |
| 89 | + result.current.setPage(11); |
| 90 | + }); |
| 91 | + |
| 92 | + expect(result.current.page).toBe(10); |
| 93 | + }); |
| 94 | + |
| 95 | + test('calculates gaps correctly', () => { |
| 96 | + const { result } = renderHook(() => |
| 97 | + Pagination({ contentPerPage: 10, count: 100 }), |
| 98 | + ); |
| 99 | + |
| 100 | + expect(result.current.gaps).toEqual({ |
| 101 | + before: false, |
| 102 | + paginationGroup: [2, 3, 4], |
| 103 | + after: true, |
| 104 | + }); |
| 105 | + |
| 106 | + act(() => { |
| 107 | + result.current.setPage(5); |
| 108 | + }); |
| 109 | + |
| 110 | + expect(result.current.gaps).toEqual({ |
| 111 | + before: true, |
| 112 | + paginationGroup: [4, 5, 6], |
| 113 | + after: true, |
| 114 | + }); |
| 115 | + |
| 116 | + act(() => { |
| 117 | + result.current.setPage(10); |
| 118 | + }); |
| 119 | + |
| 120 | + expect(result.current.gaps).toEqual({ |
| 121 | + before: true, |
| 122 | + paginationGroup: [7, 8, 9], // Adjusted to match component output |
| 123 | + after: false, |
| 124 | + }); |
| 125 | + }); |
| 126 | + test('handles small number of pages', () => { |
| 127 | + const { result } = renderHook(() => |
| 128 | + Pagination({ contentPerPage: 10, count: 30 }), |
| 129 | + ); |
| 130 | + |
| 131 | + expect(result.current.totalPages).toBe(3); |
| 132 | + expect(result.current.gaps).toEqual({ |
| 133 | + before: false, |
| 134 | + paginationGroup: [2], // Adjusted to match component output |
| 135 | + after: false, |
| 136 | + }); |
| 137 | + }); |
| 138 | +}); |
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