content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   *
   */
  
  package androidx.test.rule;
  
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertThrows;
  import static org.junit.Assert.assertTrue;
  import static org.mockito.Mockito.mock;
  
  import android.app.Activity;
  import android.content.Intent;
  import android.os.Handler;
  import android.os.Looper;
  import androidx.test.annotation.UiThreadTest;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import androidx.test.filters.SmallTest;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.Timeout;
  import org.junit.runner.RunWith;
  
  /**
   * Since {@link UiThreadTest} handling was moved to the core Android runner there is no longer an
   * easy way to test it with local classes.
   */
  @RunWith(AndroidJUnit4.class)
  @SmallTest
  public class AndroidTimeoutUiTest {
    @Rule public Timeout globalTimeout = Timeout.millis(100);
  
    private static final ActivityFixture mockActivity = mock(ActivityFixture.class);
  
    public static class ActivityFixture extends Activity {}
  
    @Rule
    public ActivityTestRule<ActivityFixture> activityRule =
        new ActivityTestRule<ActivityFixture>(ActivityFixture.class) {
          @Override
          public ActivityFixture launchActivity(Intent startIntent) {
            return mockActivity;
          }
        };
  
    @Before
    @UiThreadTest
    public void beforeOnUiThread() {
      verifyRunsOnUiThread();
    }
  
    @Before
    public void beforeNotOnUiThread() {
      verifyRunsNotOnUiThread();
    }
  
    @After
    @UiThreadTest
    public void afterOnUiThread() {
      verifyRunsOnUiThread();
    }
  
    @After
    public void afterNotOnUiThread() {
      verifyRunsNotOnUiThread();
    }
  
    @Test
    @UiThreadTest
    public void verifyOnUiThread() throws Exception {
      verifyRunsOnUiThread();
    }
  
    @Test(timeout = 1000)
    @UiThreadTest
    public void verifyOnUiThreadWhenTimeoutUsed() {
      // Create a new handler to check if we are actually running on the UI thread
      var unused = new Handler();
      verifyRunsOnUiThread();
    }
  
    @Test(timeout = 100)
    public void attemptingToCreateHandlerNotOnUiThreadThrows() {
      verifyRunsNotOnUiThread();
      // Creating a new handler outside of the UI thread will throw an exception
  
      assertThrows(RuntimeException.class, () -> new Handler());
    }
  
    @Test
    @android.test.UiThreadTest
    public void verifyOnUiThreadWhenDeprecatedAnnotationIsUsed() {
      verifyRunsOnUiThread();
    }
  
    @Test(timeout = 100)
    @android.test.UiThreadTest
    public void verifyOnUiThreadWhenDeprecatedAnnotationIsUsedAndTimeoutIsUsed() {
      verifyRunsOnUiThread();
    }
  
    private static void verifyRunsOnUiThread() {
      assertTrue(
          "Not running on the UI Thread",
          Looper.getMainLooper().getThread() == Thread.currentThread());
      assertTrue("Not running on the UI Thread", Looper.myLooper() == Looper.getMainLooper());
    }
  
    private static void verifyRunsNotOnUiThread() {
      assertFalse(
          "Running on the UI Thread", Looper.getMainLooper().getThread() == Thread.currentThread());
      assertFalse("Running on the UI Thread", Looper.myLooper() == Looper.getMainLooper());
    }
  }
  