不久前开始使用 Robolectric,我目前在创建自己的阴影对象时遇到了一些问题。我编写了一些代码来测试我的自定义 SQLiteOpenHelper 类的行为,该类基本上只调用我的数据库表的 onCreate 方法。
@RunWith(SharedDatabaseHelperTestRunner.class)
public class SharedDatabaseHelperTest {
private SharedDatabaseHelper helper;
@Before
public void setUp()
throws Exception {
helper = new SharedDatabaseHelper(Robolectric.application);
@Test
public void shouldCallOnCreateOfDatabaseTables()
throws Exception {
helper.onCreate(null);
assertTrue(ShadowTweetTable.onCreateCalled);
}
@Test
public void shouldCallOnUpdateOfDatabaseTables()
throws Exception {
helper.onUpgrade(null, 0, 0);
assertTrue(ShadowTweetTable.onUpgradeCalled);
}
数据库表的影子对象也只设置了一些布尔变量,确保调用 onCreate:
@Implements(TweetTable.class)
public class ShadowTweetTable {
public static boolean onCreateCalled = false;
public static boolean onUpgradeCalled = false;
@Implementation
public static void onCreate(SQLiteDatabase database) {
onCreateCalled = true;
}
@Implementation
public static void onUpgrade(SQLiteDatabase database, int oldVersion, int newVersion) {
onUpgradeCalled = true;
}
当我运行测试时,RobolectricTestRunner 告诉我 TweetTable 没有影子字段,尽管我的自定义测试运行程序绑定了我的影子类:
公共类 SharedDatabaseHelperTestRunner 扩展 RobolectricTestRunner {
public SharedDatabaseHelperTestRunner(Class<?> testClass)
throws InitializationError {
super(testClass);
}
@Override
protected void bindShadowClasses() {
Robolectric.bindShadowClass(ShadowTweetTable.class);
}
}