/*
* 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 android.support.design.widget;
import static org.junit.Assert.assertTrue;
import android.app.Activity;
import android.support.design.testapp.R;
import android.support.design.testapp.TabLayoutPoolingActivity;
import android.support.test.annotation.UiThreadTest;
import android.support.test.filters.SmallTest;
import android.support.test.rule.ActivityTestRule;
import android.support.test.runner.AndroidJUnit4;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
@RunWith(AndroidJUnit4.class)
public class TabLayoutPoolingTest {
@Rule
public final ActivityTestRule<TabLayoutPoolingActivity> activityTestRule =
new ActivityTestRule<>(TabLayoutPoolingActivity.class);
@UiThreadTest
@SmallTest
@Test
public void testUsingTabsFromOtherInstance() {
final Activity activity = activityTestRule.getActivity();
// TabLayout1 has items added via the layout, so we'll just check they're
// there first
final TabLayout tabLayout1 = (TabLayout) activity.findViewById(R.id.tabs_1);
assertTrue(tabLayout1.getTabCount() > 0);
// Now remove all tabs. TabLayout will pool the Tab instances...
tabLayout1.removeAllTabs();
// Now add some tabs to the second TabLayout and make sure that we don't crash
final TabLayout tabLayout2 = (TabLayout) activity.findViewById(R.id.tabs_2);
tabLayout2.addTab(tabLayout2.newTab());
tabLayout2.addTab(tabLayout2.newTab());
tabLayout2.addTab(tabLayout2.newTab());
}
}