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| 1 | +import { beforeEach, describe, expect, it, vi } from 'vitest'; |
| 2 | + |
| 3 | +import { |
| 4 | + getAdditionalCssDir, |
| 5 | + getAdditionalCssFilenames, |
| 6 | + isValidAdditionalCssFilename, |
| 7 | + readAdditionalCssFile, |
| 8 | +} from '../additional-css'; |
| 9 | + |
| 10 | +import path from 'path'; |
| 11 | + |
| 12 | +const { mockReaddirSync, mockReadFileSync } = vi.hoisted(() => ({ |
| 13 | + mockReaddirSync: vi.fn(), |
| 14 | + mockReadFileSync: vi.fn(), |
| 15 | +})); |
| 16 | + |
| 17 | +vi.mock('fs', () => ({ |
| 18 | + default: { |
| 19 | + readdirSync: mockReaddirSync, |
| 20 | + readFileSync: mockReadFileSync, |
| 21 | + }, |
| 22 | + readdirSync: mockReaddirSync, |
| 23 | + readFileSync: mockReadFileSync, |
| 24 | +})); |
| 25 | + |
| 26 | +describe('getAdditionalCssDir', () => { |
| 27 | + beforeEach(() => { |
| 28 | + delete process.env.ADDITIONAL_CSS_DIR; |
| 29 | + }); |
| 30 | + |
| 31 | + it('should use ADDITIONAL_CSS_DIR when set', () => { |
| 32 | + // Arrange |
| 33 | + process.env.ADDITIONAL_CSS_DIR = '/custom/css'; |
| 34 | + |
| 35 | + // Act |
| 36 | + const result = getAdditionalCssDir(); |
| 37 | + |
| 38 | + // Assert |
| 39 | + expect(result).toBe('/custom/css'); |
| 40 | + }); |
| 41 | + |
| 42 | + it('should fall back to cwd/additional_css when env var is not set', () => { |
| 43 | + // Act |
| 44 | + const result = getAdditionalCssDir(); |
| 45 | + |
| 46 | + // Assert |
| 47 | + expect(result).toBe(path.join(process.cwd(), 'additional_css')); |
| 48 | + }); |
| 49 | +}); |
| 50 | + |
| 51 | +describe('getAdditionalCssFilenames', () => { |
| 52 | + beforeEach(() => { |
| 53 | + vi.resetAllMocks(); |
| 54 | + }); |
| 55 | + |
| 56 | + it('should return sorted css filenames when folder exists', () => { |
| 57 | + // Arrange |
| 58 | + mockReaddirSync.mockReturnValue(['zebra.css', 'alpha.css', 'notes.txt']); |
| 59 | + |
| 60 | + // Act |
| 61 | + const result = getAdditionalCssFilenames('/css'); |
| 62 | + |
| 63 | + // Assert |
| 64 | + expect(result).toEqual(['alpha.css', 'zebra.css']); |
| 65 | + expect(mockReaddirSync).toHaveBeenCalledWith('/css'); |
| 66 | + }); |
| 67 | + |
| 68 | + it('should exclude non-css files', () => { |
| 69 | + // Arrange |
| 70 | + mockReaddirSync.mockReturnValue(['styles.css', 'readme.md', 'script.js']); |
| 71 | + |
| 72 | + // Act |
| 73 | + const result = getAdditionalCssFilenames('/css'); |
| 74 | + |
| 75 | + // Assert |
| 76 | + expect(result).toEqual(['styles.css']); |
| 77 | + }); |
| 78 | + |
| 79 | + it('should return an empty array when folder does not exist', () => { |
| 80 | + // Arrange |
| 81 | + mockReaddirSync.mockImplementation(() => { |
| 82 | + const error = new Error('ENOENT') as NodeJS.ErrnoException; |
| 83 | + error.code = 'ENOENT'; |
| 84 | + throw error; |
| 85 | + }); |
| 86 | + |
| 87 | + // Act |
| 88 | + const result = getAdditionalCssFilenames('/missing'); |
| 89 | + |
| 90 | + // Assert |
| 91 | + expect(result).toEqual([]); |
| 92 | + }); |
| 93 | + |
| 94 | + it('should return an empty array when readdirSync throws any error', () => { |
| 95 | + // Arrange |
| 96 | + mockReaddirSync.mockImplementation(() => { |
| 97 | + throw new Error('Permission denied'); |
| 98 | + }); |
| 99 | + |
| 100 | + // Act |
| 101 | + const result = getAdditionalCssFilenames('/restricted'); |
| 102 | + |
| 103 | + // Assert |
| 104 | + expect(result).toEqual([]); |
| 105 | + }); |
| 106 | +}); |
| 107 | + |
| 108 | +describe('isValidAdditionalCssFilename', () => { |
| 109 | + it.each([ |
| 110 | + ['custom.css', true], |
| 111 | + ['nested/file.css', false], |
| 112 | + ['..\\secret.css', false], |
| 113 | + ['../secret.css', false], |
| 114 | + ['styles.txt', false], |
| 115 | + ])('isValidAdditionalCssFilename(%s) = %s', (filename, expected) => { |
| 116 | + expect(isValidAdditionalCssFilename(filename)).toBe(expected); |
| 117 | + }); |
| 118 | +}); |
| 119 | + |
| 120 | +describe('readAdditionalCssFile', () => { |
| 121 | + beforeEach(() => { |
| 122 | + vi.resetAllMocks(); |
| 123 | + delete process.env.ADDITIONAL_CSS_DIR; |
| 124 | + }); |
| 125 | + |
| 126 | + it('should return file contents for a valid css filename', () => { |
| 127 | + // Arrange |
| 128 | + process.env.ADDITIONAL_CSS_DIR = '/css'; |
| 129 | + mockReadFileSync.mockReturnValue('body { color: red; }'); |
| 130 | + |
| 131 | + // Act |
| 132 | + const result = readAdditionalCssFile('custom.css'); |
| 133 | + |
| 134 | + // Assert |
| 135 | + expect(result).toBe('body { color: red; }'); |
| 136 | + expect(mockReadFileSync).toHaveBeenCalledWith('/css/custom.css', 'utf-8'); |
| 137 | + }); |
| 138 | + |
| 139 | + it('should return null for an invalid filename', () => { |
| 140 | + // Act |
| 141 | + const result = readAdditionalCssFile('../secret.css'); |
| 142 | + |
| 143 | + // Assert |
| 144 | + expect(result).toBeNull(); |
| 145 | + expect(mockReadFileSync).not.toHaveBeenCalled(); |
| 146 | + }); |
| 147 | + |
| 148 | + it('should return null when the file is missing', () => { |
| 149 | + // Arrange |
| 150 | + mockReadFileSync.mockImplementation(() => { |
| 151 | + throw new Error('ENOENT'); |
| 152 | + }); |
| 153 | + |
| 154 | + // Act |
| 155 | + const result = readAdditionalCssFile('missing.css'); |
| 156 | + |
| 157 | + // Assert |
| 158 | + expect(result).toBeNull(); |
| 159 | + }); |
| 160 | +}); |
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