| /* |
| * 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 android.view; |
| |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertNull; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| |
| import androidx.test.InstrumentationRegistry; |
| import androidx.test.annotation.UiThreadTest; |
| import androidx.test.filters.MediumTest; |
| import androidx.test.rule.ActivityTestRule; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| |
| @MediumTest |
| public class RenderNodeAnimatorTest { |
| @Rule |
| public ActivityTestRule<Activity> mActivityRule = new ActivityTestRule<>(Activity.class); |
| |
| private Context getContext() { |
| return InstrumentationRegistry.getTargetContext(); |
| } |
| |
| private Activity getActivity() { |
| return mActivityRule.getActivity(); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void testAlphaTransformationInfo() throws Throwable { |
| View view = new View(getContext()); |
| |
| // attach the view, since otherwise the RenderNodeAnimator won't accept view as target |
| getActivity().setContentView(view); |
| |
| RenderNodeAnimator anim = new RenderNodeAnimator(RenderNodeAnimator.ALPHA, 0.5f); |
| anim.setTarget(view); |
| assertNull(view.mTransformationInfo); |
| anim.start(); // should initialize mTransformationInfo |
| assertNotNull(view.mTransformationInfo); |
| } |
| } |