Onboarding

__tests__/services/mockBackendService.test.ts

@@ -1,5 +1,6 @@
-import AsyncStorage from '@react-native-async-storage/async-storage';
-import { mockBackendService } from '../../services/backend/mockBackendService';
+import AsyncStorage from '@react-native-async-storage/async-storage';
+import { mockBackendService } from '../../services/backend/mockBackendService';
+import { openAiScanService } from '../../services/backend/openAiScanService';
 
 jest.mock('@react-native-async-storage/async-storage', () => ({
   getItem: jest.fn(),
@@ -11,7 +12,7 @@ const asyncStorageMemory: Record<string, string> = {};
 
 const mockedAsyncStorage = AsyncStorage as jest.Mocked<typeof AsyncStorage>;
 
-const runScan = async (userId: string, idempotencyKey: string) => {
+const runScan = async (userId: string, idempotencyKey: string) => {
   const settledPromise = mockBackendService.scanPlant({
     userId,
     idempotencyKey,
@@ -26,7 +27,33 @@ const runScan = async (userId: string, idempotencyKey: string) => {
   const settled = await settledPromise;
   if (!settled.ok) throw settled.error;
   return settled.value;
-};
+};
+
+const runHealthCheck = async (userId: string, idempotencyKey: string) => {
+  const settledPromise = mockBackendService.healthCheck({
+    userId,
+    idempotencyKey,
+    imageUri: `data:image/jpeg;base64,${idempotencyKey}`,
+    language: 'en',
+    plantContext: {
+      name: 'Monstera',
+      botanicalName: 'Monstera deliciosa',
+      careInfo: {
+        waterIntervalDays: 7,
+        light: 'Bright indirect light',
+        temp: '18-24C',
+      },
+    },
+  }).then(
+    value => ({ ok: true as const, value }),
+    error => ({ ok: false as const, error }),
+  );
+  await Promise.resolve();
+  await jest.runAllTimersAsync();
+  const settled = await settledPromise;
+  if (!settled.ok) throw settled.error;
+  return settled.value;
+};
 
 describe('mockBackendService billing simulation', () => {
   beforeEach(() => {
@@ -48,10 +75,11 @@ describe('mockBackendService billing simulation', () => {
     });
   });
 
-  afterEach(() => {
-    jest.useRealTimers();
-    jest.clearAllMocks();
-  });
+  afterEach(() => {
+    jest.useRealTimers();
+    jest.restoreAllMocks();
+    jest.clearAllMocks();
+  });
 
   it('keeps simulatePurchase idempotent for same idempotency key', async () => {
     const userId = 'test-user-idempotency';
@@ -142,6 +170,40 @@ describe('mockBackendService billing simulation', () => {
     expect(second.billing.credits.available).toBe(first.billing.credits.available);
   });
 
+  it('charges one credit for a normal scan after a two-credit health check', async () => {
+    const userId = 'test-user-health-then-scan-cost';
+    jest.spyOn(openAiScanService, 'isConfigured').mockReturnValue(true);
+    jest.spyOn(openAiScanService, 'analyzePlantHealth').mockResolvedValue({
+      overallHealthScore: 72,
+      status: 'watch',
+      analysisSummary: 'Mild stress signs are visible.',
+      likelyIssues: [
+        {
+          title: 'Watering stress',
+          confidence: 0.62,
+          details: 'The leaf texture suggests inconsistent watering.',
+        },
+      ],
+      actionsNow: ['Check soil moisture before watering.'],
+      plan7Days: ['Take a comparison photo in one week.'],
+    });
+
+    await mockBackendService.simulatePurchase({
+      userId,
+      idempotencyKey: 'sub-health-then-scan-cost',
+      productId: 'monthly_pro',
+    });
+
+    const healthCheck = await runHealthCheck(userId, 'health-cost-1');
+    expect(healthCheck.creditsCharged).toBe(2);
+    expect(healthCheck.billing.credits.usedThisCycle).toBe(2);
+
+    const scan = await runScan(userId, 'scan-after-health-cost-1');
+    expect(scan.modelPath).toContain('mock-review');
+    expect(scan.creditsCharged).toBe(1);
+    expect(scan.billing.credits.usedThisCycle).toBe(3);
+  });
+
   it('blocks free users from real scans', async () => {
     const userId = 'test-user-credit-limit';
     let successfulScans = 0;