content: /*
   * Copyright (C) 2014 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.espresso;
  
  import static androidx.test.espresso.Espresso.onView;
  import static androidx.test.espresso.action.ViewActions.click;
  import static androidx.test.espresso.matcher.ViewMatchers.withId;
  import static org.junit.Assert.assertThat;
  import static org.junit.Assert.fail;
  
  import android.os.Handler;
  import android.os.Looper;
  import androidx.test.ext.junit.rules.ActivityScenarioRule;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import androidx.test.filters.LargeTest;
  import androidx.test.ui.app.R;
  import androidx.test.ui.app.SyncActivity;
  import java.util.concurrent.FutureTask;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicBoolean;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /** Test case for {@link AppNotIdleException}. */
  @LargeTest
  @RunWith(AndroidJUnit4.class)
  public class AppNotIdleExceptionTest {
  
    @Rule
    public ActivityScenarioRule<SyncActivity> rule = new ActivityScenarioRule<>(SyncActivity.class);
  
    @Before
    public void setUp() throws Exception {
      IdlingPolicies.setMasterPolicyTimeout(5, TimeUnit.SECONDS);
    }
  
    @After
    public void tearDown() throws Exception {
      IdlingPolicies.setMasterPolicyTimeout(60, TimeUnit.SECONDS);
    }
  
    @Test
    public void appIdleException() throws Exception {
      final AtomicBoolean continueBeingBusy = new AtomicBoolean(true);
      try {
        final Handler handler = new Handler(Looper.getMainLooper());
        Runnable runnable =
            new Runnable() {
              @Override
              public void run() {
                if (!continueBeingBusy.get()) {
                  return;
                } else {
                  handler.post(this);
                }
              }
            };
        FutureTask<Void> task = new FutureTask<Void>(runnable, null);
        handler.post(task);
        task.get(); // Will Make sure that the first post is sent before we do a lookup.
        // Request the "hello world!" text by clicking on the request button.
        onView(withId(R.id.request_button)).perform(click());
        fail("Espresso failed to throw AppNotIdleException");
      } catch (AppNotIdleException expected) {
        assertThat(
            expected.getMessage(),
            new StringPatternMatcher(
                "Looped for \\d+ iterations over \\d+ SECONDS\\. "
                    + "The following Idle Conditions failed MAIN_LOOPER_HAS_IDLED"
                    + "\\(last message: [^\\)]+\\)\\."));
      } finally {
        continueBeingBusy.getAndSet(false);
      }
    }
  
  }
  