Intlayer

import { describe, expect, it } from 'vitest'; import { deepMergeContent } from './deepMergeContent'; describe('deepMergeContent', () => { it('should merge two simple objects', () => { const target = { a: 1, b: 2 }; const source = { b: 3, c: 4 }; const result = deepMergeContent(target, source); expect(result).toEqual({ a: 1, b: 3, c: 4 }); }); it('should merge nested objects', () => { const target = { navigation: { home: 'Home', about: 'About' }, buttons: { submit: 'Submit' }, }; const source = { navigation: { about: 'À propos', contact: 'Contact' }, messages: { success: 'Succès' }, }; const result = deepMergeContent(target, source); expect(result).toEqual({ navigation: { home: 'Home', about: 'À propos', contact: 'Contact' }, buttons: { submit: 'Submit' }, messages: { success: 'Succès' }, }); }); it('should merge deeply nested objects', () => { const target = { footer: { social: { twitter: 'Twitter', facebook: 'Facebook' }, legal: { privacy: 'Privacy' }, }, }; const source = { footer: { social: { facebook: 'FB', linkedin: 'LinkedIn' }, legal: { terms: 'Terms' }, }, }; const result = deepMergeContent(target, source); expect(result).toEqual({ footer: { social: { twitter: 'Twitter', facebook: 'FB', linkedin: 'LinkedIn' }, legal: { privacy: 'Privacy', terms: 'Terms' }, }, }); }); it('should handle null target', () => { const source = { a: 1, b: 2 }; const result = deepMergeContent(null, source); expect(result).toEqual(source); }); it('should handle null source', () => { const target = { a: 1, b: 2 }; const result = deepMergeContent(target, null); expect(result).toEqual(target); }); it('should handle undefined target', () => { const source = { a: 1, b: 2 }; const result = deepMergeContent(undefined, source); expect(result).toEqual(source); }); it('should handle undefined source', () => { const target = { a: 1, b: 2 }; const result = deepMergeContent(target, undefined); expect(result).toEqual(target); }); it('should overwrite arrays instead of merging', () => { const target = { items: ['a', 'b', 'c'] }; const source = { items: ['x', 'y'] }; const result = deepMergeContent(target, source); expect(result).toEqual({ items: ['x', 'y'] }); }); it('should overwrite primitives', () => { const target = { value: 'old', count: 1 }; const source = { value: 'new', count: 2 }; const result = deepMergeContent(target, source); expect(result).toEqual({ value: 'new', count: 2 }); }); it('should handle empty objects', () => { const target = {}; const source = { a: 1, b: 2 }; const result = deepMergeContent(target, source); expect(result).toEqual({ a: 1, b: 2 }); }); it('should handle empty source', () => { const target = { a: 1, b: 2 }; const source = {}; const result = deepMergeContent(target, source); expect(result).toEqual({ a: 1, b: 2 }); }); it('should handle mix of new and updated properties', () => { const target = { navigation: { home: 'Home', about: 'About' }, buttons: { submit: 'Submit', cancel: 'Cancel' }, }; const source = { navigation: { contact: 'Contact' }, // Add contact, keep home/about buttons: { cancel: 'Annuler' }, // Update cancel, keep submit messages: { success: 'Succès' }, // Add new section }; const result = deepMergeContent(target, source); expect(result).toEqual({ navigation: { home: 'Home', about: 'About', contact: 'Contact' }, buttons: { submit: 'Submit', cancel: 'Annuler' }, messages: { success: 'Succès' }, }); }); it('should not mutate original objects', () => { const target = { a: { b: 1 } }; const source = { a: { c: 2 } }; const result = deepMergeContent(target, source); expect(target).toEqual({ a: { b: 1 } }); expect(source).toEqual({ a: { c: 2 } }); expect(result).toEqual({ a: { b: 1, c: 2 } }); }); it('should handle string values correctly', () => { const target = { message: 'Hello' }; const source = { message: 'Bonjour' }; const result = deepMergeContent(target, source); expect(result).toEqual({ message: 'Bonjour' }); }); it('should handle empty string values', () => { const target = { optional: '', required: 'Value' }; const source = { optional: 'Now has value', required: '' }; const result = deepMergeContent(target, source); expect(result).toEqual({ optional: 'Now has value', required: '' }); }); });