单元测试之 — Robolectric 框架

public class CustomRobolectricRunner extends RobolectricTestRunner {
    public CustomRobolectricRunner(Class<?> testClass) throws InitializationError {
        super(testClass);
		// 设置 maven 仓库 id 和 url
        RoboSettings.setMavenRepositoryId("aliyun");
        RoboSettings.setMavenRepositoryUrl("http://maven.aliyun.com/nexus/content/groups/public/");
    }
}

@Test
public void activitySetupTest() {
    RobolectricDemoActivity activity = Robolectric.buildActivity(RobolectricDemoActivity.class)
        .create()
        .get();

    assertNotNull(activity);
}

@Test
public void activityLifeCycleTest() {
    ActivityController<RobolectricDemoActivity> controller = Robolectric.buildActivity(RobolectricDemoActivity.class);

    controller.create(); // 相当于执行完 onCreate 周期函数
    // 测试 onCreate 执行之后的状态

    controller.resume(); // 相当于执行完 onResume 周期函数
    // 测试 onResume 执行之后的状态

    controller.pause(); // 相当于执行完 onPause 周期函数
    // 测试 onPause 执行之后的状态

    controller.stop(); // 相当于执行完 onStop 周期函数
    // 测试 onStop 执行之后的状态

    controller.destroy(); // 相当于执行完 onDestroy 周期函数
    // 测试 onDestroy 执行之后的状态
}

@Test
public void jumpActivityTest() {
    RobolectricDemoActivity activity = Robolectric.buildActivity(RobolectricDemoActivity.class)
        .create().get();
    Button button = activity.findViewById(R.id.aty_jump);

    Intent exceptIntent = new Intent(activity, LoginActivity.class);

    button.performClick(); // 模拟点击按键
    Intent actualIntent = ShadowApplication.getInstance().getNextStartedActivity();

    assertEquals(exceptIntent.getComponent(), actualIntent.getComponent());
}

@Test
public void dialogTest() {
    RobolectricDemoActivity activity = Robolectric.buildActivity(RobolectricDemoActivity.class)
        .create().get();
    Button button = activity.findViewById(R.id.show_dialog);
    button.performClick();
    ShadowDialog dialog = ShadowApplication.getInstance().getLatestDialog(); // 获取最近弹出的对话框

    assertNotNull(dialog);
    assertEquals("DialogTest", dialog.getTitle());
}

@Test
public void toastTest() {
    RobolectricDemoActivity activity = Robolectric.buildActivity(RobolectricDemoActivity.class)
        .create().get();
    Button button = activity.findViewById(R.id.toast);
    button.performClick();
    Toast toast = ShadowToast.getLatestToast(); // 获取最近弹出的 toast

    assertNotNull(toast);
    assertEquals("ToastTest", ShadowToast.getTextOfLatestToast());
}

@Test
public void widgetTest() {
    RobolectricDemoActivity activity = Robolectric.buildActivity(RobolectricDemoActivity.class)
        .create().get();
    Button button = activity.findViewById(R.id.toast);

    assertNotNull(button);
    assertTrue(button.isEnabled());
    assertEquals("Toast", button.getText());
}

@Test
public void receiverTest() {
    Intent intent = new Intent("cc.istarx.MyReceiver");
    intent.putExtra("receiver_test", "Receiver Test");

    MyReceiver receiver = new MyReceiver();
    // 验证是否注册
    assertTrue(ShadowApplication.getInstance().hasReceiverForIntent(intent));

    // 验证逻辑是否正确
    ShadowApplication.getInstance().sendBroadcast(intent);
    assertEquals("Receiver Test", ShadowToast.getTextOfLatestToast());
}

public class MyService extends IntentService {
    @Override
    protected void onHandleIntent(@Nullable Intent intent) {
        // do something here
    }
}

// 测试代码
@Test
public void serviceTest() {
    Intent intent = new Intent();

    MyService service = new MyService("test");
    service.onHandleIntent(intent);

    // verify logical here
}

/**
 * res/values/strings.xml
 * <string name="login_activity_res">This is Login Activity</string>
 *
 * res/values-zh-rCN/strings.xml
 * <string name="login_activity_res">This is Login Activity with zh-rCN</string>
 */
@Test
@Config(qualifiers = "zh-rCN") // 指定中文语言
public void resourcesTest() {
    Context context = RuntimeEnvironment.application;
    String str = context.getResources().getString(R.string.login_activity_res);

    assertEquals("This is Login Activity with zh-rCN", str);
}

// handle 代码如下：
public static void useHandler(){
    Handler handler = new Handler();
    Message message = new Message();
    message.what =1;
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            // do something here;
            Log.d("Looper", "Looper test.");
        }
    }, 100);
}

@Test
public void looperTest() {
    RobolectricLooperDemo.useHandle();

    ShadowLooper looper = ShadowLooper.getShadowMainLooper();
    looper.runOneTask();

    // verify
}

public class Demo {

    public String getStr() {
        return "Demo";
    }
}

@Implements(Demo.class)
public class ShadowDemo {
    public ShadowDemo(){
    }

    @Implementation
    public String getStr() {
        return "Shadow Demo implementation";
    }
}

@Config(shadows = ShadowDemo.class)
public void customShadowTest() {
    Demo demo = new Demo();
    assertEquals("Shadow Demo implementation", demo.getStr());
}

Demo demo = new Demo();
ShadowDemo shadowDemo = Shadows.shadowOf(demo);