expo-secure-store的setItemAsync与getItemAsync在Jest中失效

我使用expo-secure-store在用户登录时存储access_token，该功能在真机/模拟器上运行正常，但在Jest测试中完全失效——获取到的token始终为undefined，不过函数本身可以正常调用。

测试代码 #

test('Test SecureStore wrt Jest', async () => {
    try {
        await SecureStore.setItemAsync(TOKEN, 'randomToken');
        const token = await SecureStore.getItemAsync(TOKEN);
        console.log(token);
        expect(token).toBeDefined();
        expect(token).toBe(randomToken);
    } catch (error) {
        console.log(error);
        throw error;
    }
}

项目package.json配置 #

{
    "dependencies": {
        "@testing-library/jest-dom": "^5.16.4",
        "@testing-library/react-native": "10.1.1",
        "expo": "^44.0.0",
        "jest": "28.1.2",
        "jest-expo": "^45.0.1",
        "react": "17.0.1",
        "react-native": "0.64.3",
        "ts-jest": "^28.0.0-next.3"
    },
    "devDependencies": {
        "@types/jest": "^28.1.5",
        "@types/react-test-renderer": "^18.0.0",
        "jest-environment-jsdom": "^28.1.2",
        "react-test-renderer": "17.0.1",
    }
}

当前使用的mock文件内容 #

jest.mock('expo-secure-store', () => {
  const realConstants = jest.requireActual('expo-constants').default
  const mockConstants = Object.create(realConstants)
  const realExpoSecureStore = jest.requireActual(
    'expo-secure-store/src/SecureStore'
  )
  const realExpoModulesCore = jest.requireActual(
    'expo-modules-core/src/NativeModulesProxy'
  )
  return {
    ...realConstants,
    ...realExpoSecureStore,
    ...realExpoModulesCore,
    mockConstants,
    NativeModulesProxy: {
      ExpoSecureStore: {
        setValueWithKeyAsync: jest.fn(),
        getValueWithKeyAsync: jest.fn(),
      },
    },
    SecureStore: {
      setItemAsync: jest.fn(),
      getItemAsync: jest.fn(),
    },
  }
})

内容的提问来源于stack exchange，提问作者Supriya Kalghatgi