test: fix mmkv mock

Author: fernandatoledo

__mocks__/react-native-mmkv.ts

@@ -0,0 +1,37 @@
+const sharedMockStorage = new Map<string, string>();
+
+const createMockStorage = () => ({
+  getString: (key: string): string | undefined => sharedMockStorage.get(key),
+  set: (key: string, value: string): void => {
+    sharedMockStorage.set(key, value);
+  },
+  remove: (key: string): void => {
+    sharedMockStorage.delete(key);
+  },
+  clearAll: (): void => {
+    sharedMockStorage.clear();
+  },
+  getAllKeys: (): Array<string> => Array.from(sharedMockStorage.keys()),
+  contains: (key: string): boolean => sharedMockStorage.has(key),
+  getNumber: (key: string): number | undefined => {
+    const value = sharedMockStorage.get(key);
+    return value ? Number(value) : undefined;
+  },
+  getBoolean: (key: string): boolean | undefined => {
+    const value = sharedMockStorage.get(key);
+    if (value === undefined) {
+      return undefined;
+    }
+    return value === 'true';
+  },
+  setNumber: (key: string, value: number): void => {
+    sharedMockStorage.set(key, String(value));
+  },
+  setBoolean: (key: string, value: boolean): void => {
+    sharedMockStorage.set(key, String(value));
+  },
+});
+
+export function createMMKV(_options?: { id?: string }) {
+  return createMockStorage();
+}

jest-setup.ts

@@ -5,3 +5,5 @@ import '@testing-library/react-native/extend-expect';
 global.window = {};
 // @ts-ignore
 global.window = global;
+
+jest.mock('react-native-mmkv');

src/components/providers/auth.test.tsx

@@ -13,18 +13,6 @@ import {
   useAuth,
 } from './auth';
 
-// Mock MMKV Storage
-jest.mock('react-native-mmkv', () => {
-  const mockStorage = new Map();
-  return {
-    MMKV: jest.fn().mockImplementation(() => ({
-      set: (key: string, value: string) => mockStorage.set(key, value),
-      getString: (key: string) => mockStorage.get(key) ?? null,
-      delete: (key: string) => mockStorage.delete(key),
-    })),
-  };
-});
-
 // Mock API client interceptors
 jest.mock('@/api', () => ({
   client: {