Added extension functionality

lib/extensions/__tests__/toggle-check.test.ts

@@ -0,0 +1,48 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { createMockSupabase } from '@/tests/helpers'
+
+const { supabase: mockSupabase, mockResult } = createMockSupabase()
+vi.mock('@/lib/supabase/server', () => ({
+  createServiceClient: () => Promise.resolve(mockSupabase),
+}))
+
+import { isExtensionEnabled } from '../toggle-check'
+
+describe('isExtensionEnabled', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('returns true when toggle exists and is enabled', async () => {
+    mockResult({ data: { enabled: true }, error: null })
+
+    const result = await isExtensionEnabled('user-1', 'general', 'receipt-ocr')
+
+    expect(result).toBe(true)
+    expect(mockSupabase.from).toHaveBeenCalledWith('extension_toggles')
+  })
+
+  it('returns false when toggle exists and is disabled', async () => {
+    mockResult({ data: { enabled: false }, error: null })
+
+    const result = await isExtensionEnabled('user-1', 'general', 'receipt-ocr')
+
+    expect(result).toBe(false)
+  })
+
+  it('returns true for legacy general extensions when no toggle row exists', async () => {
+    mockResult({ data: null, error: null })
+
+    const result = await isExtensionEnabled('user-1', 'general', 'receipt-ocr')
+
+    expect(result).toBe(true)
+  })
+
+  it('returns false for non-legacy extensions when no toggle row exists', async () => {
+    mockResult({ data: null, error: null })
+
+    const result = await isExtensionEnabled('user-1', 'restaurant', 'tip-tracking')
+
+    expect(result).toBe(false)
+  })
+})