Android 学习手册

// 单元测试 (src/test)
import org.junit.Test;
import static org.junit.Assert.*;
public class ExampleUnitTest {
    @Test public void addition_isCorrect() { assertEquals(4, 2+2); }
}

// UI 测试 (src/androidTest)
@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
    @Test public void useAppContext() {
        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
        assertEquals("com.example.app", appContext.getPackageName());
    }
}