Import Android SDK Platform P [4697573]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4697573 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-sources-4697573.zip

AndroidVersion.ApiLevel has been modified to appear as 28

Change-Id: If80578c3c657366cc9cf75f8db13d46e2dd4e077

androidx/lifecycle/ViewModelTestInTransaction.java

diff --git a/androidx/lifecycle/ViewModelTestInTransaction.java b/androidx/lifecycle/ViewModelTestInTransaction.java
new file mode 100644
index 0000000..091bede
--- /dev/null
+++ b/androidx/lifecycle/ViewModelTestInTransaction.java
@@ -0,0 +1,94 @@
+/*
+ * 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 android.support.test.annotation.UiThreadTest;
+import android.support.test.filters.MediumTest;
+import android.support.test.rule.ActivityTestRule;
+import android.support.test.runner.AndroidJUnit4;
+
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.viewmodeltest.TestViewModel;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@MediumTest
+@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());
+        }
+    }
+}