// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.components.browser_ui.util;
import android.view.View;
import android.widget.FrameLayout;
import androidx.test.filters.SmallTest;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.chromium.base.ThreadUtils;
import org.chromium.base.test.BaseActivityTestRule;
import org.chromium.base.test.BaseJUnit4ClassRunner;
import org.chromium.ui.test.util.BlankUiTestActivity;
import java.util.concurrent.CountDownLatch;
/** Tests for {@link FirstDrawDetector}. */
@RunWith(BaseJUnit4ClassRunner.class)
public class FirstDrawDetectorTest {
@Rule
public BaseActivityTestRule<BlankUiTestActivity> mActivityTestRule =
new BaseActivityTestRule<>(BlankUiTestActivity.class);
@Test
@SmallTest
public void testFirstDraw() throws Exception {
mActivityTestRule.launchActivity(null);
final CountDownLatch firstDrawEvent = new CountDownLatch(1);
ThreadUtils.runOnUiThreadBlocking(
() -> {
BlankUiTestActivity activity = mActivityTestRule.getActivity();
View view = new FrameLayout(activity);
activity.setContentView(view);
FirstDrawDetector.waitForFirstDraw(view, () -> firstDrawEvent.countDown());
});
firstDrawEvent.await();
}
}