| /* |
| * Copyright (C) 2017 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.lifecycle; |
| |
| import static org.hamcrest.CoreMatchers.is; |
| import static org.hamcrest.CoreMatchers.notNullValue; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import android.os.Bundle; |
| |
| import androidx.annotation.Nullable; |
| import androidx.fragment.app.Fragment; |
| import androidx.lifecycle.viewmodeltest.TestViewModel; |
| import androidx.test.annotation.UiThreadTest; |
| import androidx.test.ext.junit.runners.AndroidJUnit4; |
| import androidx.test.filters.SmallTest; |
| import androidx.test.rule.ActivityTestRule; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @SmallTest |
| @RunWith(AndroidJUnit4.class) |
| public class ViewModelTestInTransaction { |
| |
| @Rule |
| public ActivityTestRule<EmptyActivity> mActivityRule = |
| new ActivityTestRule<>(EmptyActivity.class); |
| |
| @Test |
| @UiThreadTest |
| public void testViewModelInTransactionActivity() { |
| EmptyActivity activity = mActivityRule.getActivity(); |
| TestFragment fragment = new TestFragment(); |
| activity.getSupportFragmentManager().beginTransaction().add(fragment, "tag").commitNow(); |
| TestViewModel viewModel = ViewModelProviders.of(activity).get(TestViewModel.class); |
| assertThat(viewModel, is(fragment.mViewModel)); |
| } |
| |
| @Test |
| @UiThreadTest |
| public void testViewModelInTransactionFragment() { |
| EmptyActivity activity = mActivityRule.getActivity(); |
| ParentFragment parent = new ParentFragment(); |
| activity.getSupportFragmentManager().beginTransaction().add(parent, "parent").commitNow(); |
| assertThat(parent.mExecuted, is(true)); |
| } |
| |
| |
| public static class ParentFragment extends Fragment { |
| |
| private boolean mExecuted; |
| |
| @Override |
| public void onCreate(@Nullable Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| TestFragment fragment = new TestFragment(); |
| getChildFragmentManager().beginTransaction().add(fragment, "tag").commitNow(); |
| TestViewModel viewModel = ViewModelProviders.of(this).get(TestViewModel.class); |
| assertThat(viewModel, is(fragment.mViewModel)); |
| mExecuted = true; |
| } |
| } |
| |
| public static class TestFragment extends Fragment { |
| |
| TestViewModel mViewModel; |
| |
| @Override |
| public void onCreate(@Nullable Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| Fragment parentFragment = getParentFragment(); |
| ViewModelProvider provider = parentFragment != null |
| ? ViewModelProviders.of(parentFragment) : ViewModelProviders.of(getActivity()); |
| mViewModel = provider.get(TestViewModel.class); |
| assertThat(mViewModel, notNullValue()); |
| } |
| } |
| } |