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| 1 | +import { filterMessageKeys, filterMultiLocaleMessages } from '../../src/codegen' |
| 2 | +import { generate as generateJSON } from '../../src/json' |
| 3 | +import { generate as generateYAML } from '../../src/yaml' |
| 4 | + |
| 5 | +describe('filterMessageKeys', () => { |
| 6 | + test('flat keys: keeps used, removes unused', () => { |
| 7 | + const messages = { hello: 'hello!', goodbye: 'goodbye!', unused: 'unused!' } |
| 8 | + const usedKeys = new Set(['hello', 'goodbye']) |
| 9 | + const result = filterMessageKeys(messages, key => usedKeys.has(key)) |
| 10 | + expect(result).toEqual({ hello: 'hello!', goodbye: 'goodbye!' }) |
| 11 | + }) |
| 12 | + |
| 13 | + test('nested keys: keeps parent objects for used children', () => { |
| 14 | + const messages = { |
| 15 | + nav: { home: 'Home', about: 'About', contact: 'Contact' }, |
| 16 | + footer: { copyright: '2024' } |
| 17 | + } |
| 18 | + const usedKeys = new Set(['nav.home']) |
| 19 | + const shouldKeep = (key: string) => |
| 20 | + usedKeys.has(key) || [...usedKeys].some(k => k.startsWith(key + '.')) |
| 21 | + const result = filterMessageKeys(messages, shouldKeep) |
| 22 | + expect(result).toEqual({ nav: { home: 'Home' } }) |
| 23 | + }) |
| 24 | + |
| 25 | + test('deeply nested keys', () => { |
| 26 | + const messages = { |
| 27 | + a: { b: { c: { d: 'deep' }, e: 'shallow' } } |
| 28 | + } |
| 29 | + const usedKeys = new Set(['a.b.c.d']) |
| 30 | + const shouldKeep = (key: string) => |
| 31 | + usedKeys.has(key) || [...usedKeys].some(k => k.startsWith(key + '.')) |
| 32 | + const result = filterMessageKeys(messages, shouldKeep) |
| 33 | + expect(result).toEqual({ a: { b: { c: { d: 'deep' } } } }) |
| 34 | + }) |
| 35 | + |
| 36 | + test('empty result when no keys match', () => { |
| 37 | + const messages = { hello: 'hello!' } |
| 38 | + const result = filterMessageKeys(messages, () => false) |
| 39 | + expect(result).toEqual({}) |
| 40 | + }) |
| 41 | + |
| 42 | + test('all keys kept when all match', () => { |
| 43 | + const messages = { a: '1', b: '2' } |
| 44 | + const result = filterMessageKeys(messages, () => true) |
| 45 | + expect(result).toEqual(messages) |
| 46 | + }) |
| 47 | + |
| 48 | + test('array values preserved when key matches', () => { |
| 49 | + const messages = { errors: ['E001', 'E002'], unused: 'x' } |
| 50 | + const result = filterMessageKeys(messages, key => key === 'errors') |
| 51 | + expect(result).toEqual({ errors: ['E001', 'E002'] }) |
| 52 | + }) |
| 53 | + |
| 54 | + test('sibling keys: keeps only matching siblings', () => { |
| 55 | + const messages = { |
| 56 | + nav: { home: 'Home', about: 'About' }, |
| 57 | + auth: { login: 'Login', logout: 'Logout' } |
| 58 | + } |
| 59 | + const usedKeys = new Set(['nav.home', 'auth.login']) |
| 60 | + const shouldKeep = (key: string) => |
| 61 | + usedKeys.has(key) || [...usedKeys].some(k => k.startsWith(key + '.')) |
| 62 | + const result = filterMessageKeys(messages, shouldKeep) |
| 63 | + expect(result).toEqual({ |
| 64 | + nav: { home: 'Home' }, |
| 65 | + auth: { login: 'Login' } |
| 66 | + }) |
| 67 | + }) |
| 68 | +}) |
| 69 | + |
| 70 | +describe('filterMultiLocaleMessages', () => { |
| 71 | + test('filters keys within each locale independently', () => { |
| 72 | + const messages = { |
| 73 | + en: { hello: 'Hello', unused: 'X' }, |
| 74 | + ja: { hello: 'こんにちは', unused: 'Y' } |
| 75 | + } |
| 76 | + const result = filterMultiLocaleMessages(messages, key => key === 'hello') |
| 77 | + expect(result).toEqual({ |
| 78 | + en: { hello: 'Hello' }, |
| 79 | + ja: { hello: 'こんにちは' } |
| 80 | + }) |
| 81 | + }) |
| 82 | + |
| 83 | + test('removes empty locale entries', () => { |
| 84 | + const messages = { |
| 85 | + en: { hello: 'Hello' }, |
| 86 | + ja: { unused: 'Y' } |
| 87 | + } |
| 88 | + const result = filterMultiLocaleMessages(messages, key => key === 'hello') |
| 89 | + expect(result).toEqual({ en: { hello: 'Hello' } }) |
| 90 | + }) |
| 91 | + |
| 92 | + test('preserves non-object locale values', () => { |
| 93 | + const messages = { |
| 94 | + en: { hello: 'Hello' }, |
| 95 | + count: 42 |
| 96 | + } as Record<string, unknown> |
| 97 | + const result = filterMultiLocaleMessages(messages, key => key === 'hello') |
| 98 | + expect(result).toEqual({ en: { hello: 'Hello' }, count: 42 }) |
| 99 | + }) |
| 100 | +}) |
| 101 | + |
| 102 | +describe('generateJSON with usedKeyFilter', () => { |
| 103 | + test('filters unused keys from output', () => { |
| 104 | + const source = JSON.stringify({ |
| 105 | + hello: 'hello world!', |
| 106 | + unused: 'this should be removed', |
| 107 | + nested: { greeting: 'hi', farewell: 'bye' } |
| 108 | + }) |
| 109 | + const { code } = generateJSON(source, { |
| 110 | + env: 'production', |
| 111 | + usedKeyFilter: key => key === 'hello' || key === 'nested.greeting' || key === 'nested' // parent needed |
| 112 | + }) |
| 113 | + expect(code).toContain('hello') |
| 114 | + expect(code).toContain('greeting') |
| 115 | + expect(code).not.toContain('unused') |
| 116 | + expect(code).not.toContain('farewell') |
| 117 | + }) |
| 118 | + |
| 119 | + test('generates valid code when all keys filtered', () => { |
| 120 | + const source = JSON.stringify({ unused: 'remove me' }) |
| 121 | + const { code } = generateJSON(source, { |
| 122 | + env: 'production', |
| 123 | + usedKeyFilter: () => false |
| 124 | + }) |
| 125 | + // Empty object generates a resource with no keys |
| 126 | + expect(code).not.toContain('unused') |
| 127 | + expect(code).not.toContain('remove me') |
| 128 | + }) |
| 129 | +}) |
| 130 | + |
| 131 | +describe('generateYAML with usedKeyFilter', () => { |
| 132 | + test('filters unused keys from output', () => { |
| 133 | + const source = `hello: hello world! |
| 134 | +unused: this should be removed |
| 135 | +nested: |
| 136 | + greeting: hi |
| 137 | + farewell: bye` |
| 138 | + const { code } = generateYAML(source, { |
| 139 | + env: 'production', |
| 140 | + usedKeyFilter: key => key === 'hello' || key === 'nested.greeting' || key === 'nested' |
| 141 | + }) |
| 142 | + expect(code).toContain('hello') |
| 143 | + expect(code).toContain('greeting') |
| 144 | + expect(code).not.toContain('unused') |
| 145 | + expect(code).not.toContain('farewell') |
| 146 | + }) |
| 147 | +}) |
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