测试 GreenDao 实体，QueryBuilder 始终为 Null

Question

我目前正在尝试在 android 中测试 greenDao 实体，但我不知道如何正确获取 Dao 对象的副本。

我目前正在尝试：

@Before
public void setUp() throws Exception {

    user = new User(id, userId, email, password, token);

    Context context = new MockContext();
    DaoMaster.DevOpenHelper openHelper = new DaoMaster.DevOpenHelper(context , null, null);
    SQLiteDatabase db = openHelper.getWritableDatabase();
    daoSession = new DaoMaster(db).newSession();
    userDb = daoSession.getUserDao();

    assertNotNull(userDb); // This PASSES

    userDb.queryBuilder().list(); // This ALWAYS throws null pointer exception
}

有什么建议吗？我的测试 class 扩展 AndroidTestCase

更新：

我已经弄清楚如何在运行使用以下设备测试时访问实体：

public class UserDaoHelperTest extends ApplicationTestCase<Application> {

    private UserDao userDb;

    public UserDaoHelperTest() {
        super(Application.class);
    }

    @Override
    public void setUp(){

        DaoMaster.DevOpenHelper openHelper = new DaoMaster.DevOpenHelper(getContext(), null, null);
        SQLiteDatabase db = openHelper.getWritableDatabase();
        DaoSession daoSession = new DaoMaster(db).newSession();
        userDb = daoSession.getUserDao();
    }
}

Answer 1

我已经弄清楚如何在运行使用以下方法在设备上进行测试时访问实体：

public class UserDaoHelperTest extends ApplicationTestCase<Application> {

    private UserDao userDb;

    public UserDaoHelperTest() {
        super(Application.class);
    }

    @Override
    public void setUp(){

        DaoMaster.DevOpenHelper openHelper = new DaoMaster.DevOpenHelper(getContext(), null, null);
        SQLiteDatabase db = openHelper.getWritableDatabase();
        DaoSession daoSession = new DaoMaster(db).newSession();
        userDb = daoSession.getUserDao();
    }
}

测试 GreenDao 实体，QueryBuilder 始终为 Null

Testing GreenDao Entities, QueryBuilder is always Null

junit

android

greendao