static/frontend/src/contexts/SettingsContext.test.ts

/**
 * Settings Schema Tests
 */

import { describe, it, expect, beforeEach } from 'vitest';

// Schema version for reference
const SCHEMA_VERSION = 2;

describe('Settings Schema', () => {
  beforeEach(() => {
    localStorage.clear();
  });

  it('should have version 2 as current schema', () => {
    expect(SCHEMA_VERSION).toBe(2);
  });

  describe('Storage format', () => {
    it('stores settings with _version field', () => {
      const mockSettings = {
        _version: SCHEMA_VERSION,
        temperature: 0.8,
        maxOutputTokens: 4096,
        topP: 0.9,
        enableGoogleSearch: true,
      };
      
      localStorage.setItem('modelSettings', JSON.stringify(mockSettings));
      const stored = JSON.parse(localStorage.getItem('modelSettings') || '{}');
      
      expect(stored._version).toBe(2);
      expect(stored.temperature).toBe(0.8);
    });
  });

  describe('Migration', () => {
    it('v1 settings (no version) should be migrated', () => {
      // v1 format: no _version field
      const v1Settings = {
        temperature: 0.7,
        maxOutputTokens: 2048,
      };
      
      localStorage.setItem('modelSettings', JSON.stringify(v1Settings));
      const stored = JSON.parse(localStorage.getItem('modelSettings') || '{}');
      
      // Migration logic would add version
      expect(stored._version).toBeUndefined(); // Before migration
      
      // After loading through SettingsContext, version would be added
    });
  });
});