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/** * StoriesIndexService Tests * * TESTING PATTERNS: * - Unit tests with mocked dependencies * - Test each method independently * - Cover success cases, edge cases, and error handling * * CODING STANDARDS: * - Use descriptive test names (should...) * - Arrange-Act-Assert pattern * - Mock external dependencies * - Test behavior, not implementation */ import { describe, expect, it, beforeEach } from 'vitest'; import { StoriesIndexService } from '../../src/services/StoriesIndexService'; describe('StoriesIndexService', () => { let service: StoriesIndexService; beforeEach(() => { service = new StoriesIndexService(); }); describe('getAllComponents', () => { it('should return empty array when no components indexed', () => { const result = service.getAllComponents(); expect(result).toBeDefined(); expect(Array.isArray(result)).toBe(true); expect(result).toHaveLength(0); }); }); describe('getComponentByTitle', () => { it('should return undefined for non-existent component', () => { const result = service.getComponentByTitle('NonExistent/Component'); expect(result).toBeUndefined(); }); it('should return undefined for empty title', () => { const result = service.getComponentByTitle(''); expect(result).toBeUndefined(); }); }); describe('findComponentByName', () => { it('should return undefined when no components match', () => { const result = service.findComponentByName('Button'); expect(result).toBeUndefined(); }); it('should handle empty search string', () => { const result = service.findComponentByName(''); expect(result).toBeUndefined(); }); it('should handle special characters in search', () => { const result = service.findComponentByName('Button@#$%'); expect(result).toBeUndefined(); }); }); describe('getComponentsByTags', () => { it('should return empty array when no components have matching tags', () => { const result = service.getComponentsByTags(['nonexistent-tag']); expect(result).toBeDefined(); expect(Array.isArray(result)).toBe(true); expect(result).toHaveLength(0); }); it('should return all components when no tags filter provided', () => { const result = service.getComponentsByTags(); expect(result).toBeDefined(); expect(Array.isArray(result)).toBe(true); }); it('should return all components when empty tags array provided', () => { const result = service.getComponentsByTags([]); expect(result).toBeDefined(); expect(Array.isArray(result)).toBe(true); }); }); describe('clear', () => { it('should clear the component index', () => { service.clear(); const result = service.getAllComponents(); expect(result).toHaveLength(0); }); }); });