diff --git a/tests/src/com/android/launcher3/util/ViewOnDrawExecutorTest.kt b/tests/src/com/android/launcher3/util/ViewOnDrawExecutorTest.kt new file mode 100644 index 0000000000..011d138ebc --- /dev/null +++ b/tests/src/com/android/launcher3/util/ViewOnDrawExecutorTest.kt @@ -0,0 +1,186 @@ +/* + * Copyright (C) 2024 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 com.android.launcher3.util + +import android.view.View +import android.view.ViewTreeObserver +import androidx.test.ext.junit.runners.AndroidJUnit4 +import com.android.launcher3.Launcher +import com.android.launcher3.Workspace +import com.android.launcher3.pageindicators.PageIndicator +import java.util.function.Consumer +import org.junit.Before +import org.junit.Test +import org.junit.runner.RunWith +import org.mockito.Mock +import org.mockito.Mockito.verify +import org.mockito.Mockito.`when` +import org.mockito.MockitoAnnotations +import org.mockito.kotlin.reset +import org.mockito.kotlin.same +import org.mockito.kotlin.verifyZeroInteractions + +@RunWith(AndroidJUnit4::class) +class ViewOnDrawExecutorTest where T : View, T : PageIndicator { + + @Mock private lateinit var runnable: Runnable + @Mock private lateinit var consumer: Consumer + @Mock private lateinit var launcher: Launcher + @Mock private lateinit var workspace: Workspace + @Mock private lateinit var rootView: View + @Mock private lateinit var viewTreeObserver: ViewTreeObserver + + private lateinit var underTest: ViewOnDrawExecutor + private lateinit var runnableList: RunnableList + + @Before + fun setup() { + MockitoAnnotations.initMocks(this) + runnableList = RunnableList() + runnableList.add(runnable) + underTest = ViewOnDrawExecutor(runnableList, consumer) + + `when`(launcher.workspace).thenReturn(workspace) + `when`(workspace.rootView).thenReturn(rootView) + `when`(workspace.viewTreeObserver).thenReturn(viewTreeObserver) + } + + @Test + fun attachToLauncher_alreadyAttachedToWindow() { + `when`(workspace.isAttachedToWindow).thenReturn(true) + + underTest.attachTo(launcher) + + verify(workspace).addOnAttachStateChangeListener(same(underTest)) + verify(viewTreeObserver).addOnDrawListener(same(underTest)) + verify(rootView).invalidate() + } + + @Test + fun attachToLauncher_notAttachedToWindow() { + `when`(workspace.isAttachedToWindow).thenReturn(false) + + underTest.attachTo(launcher) + + verify(workspace).addOnAttachStateChangeListener(same(underTest)) + verifyZeroInteractions(viewTreeObserver) + verifyZeroInteractions(rootView) + } + + @Test + fun onViewAttachedToWindow_registerObserver() { + `when`(workspace.isAttachedToWindow).thenReturn(false) + underTest.attachTo(launcher) + + underTest.onViewAttachedToWindow(rootView) + + verify(viewTreeObserver).addOnDrawListener(same(underTest)) + verify(rootView).invalidate() + } + + @Test + fun complete_then_onViewAttachedToWindow_registerObserver() { + underTest.markCompleted() + reset(viewTreeObserver) + reset(rootView) + + underTest.onViewAttachedToWindow(rootView) + + verifyZeroInteractions(viewTreeObserver) + verifyZeroInteractions(rootView) + } + + @Test + fun onDraw_postRunnable() { + underTest.attachTo(launcher) + + underTest.onDraw() + + verify(workspace).post(same(underTest)) + } + + @Test + fun run_before_onDraw_noOp() { + underTest.run() + + verifyZeroInteractions(runnable) + verifyZeroInteractions(viewTreeObserver) + verifyZeroInteractions(workspace) + verifyZeroInteractions(consumer) + } + + @Test + fun first_run_executeRunnable() { + underTest.attachTo(launcher) + underTest.onDraw() + + underTest.run() + + verify(runnable).run() + verify(viewTreeObserver).removeOnDrawListener(same(underTest)) + verify(workspace).removeOnAttachStateChangeListener(same(underTest)) + verify(consumer).accept(same(underTest)) + } + + @Test + fun second_run_noOp() { + underTest.attachTo(launcher) + underTest.onDraw() + underTest.run() + reset(runnable) + reset(viewTreeObserver) + reset(workspace) + reset(consumer) + + underTest.run() + + verifyZeroInteractions(runnable) + verifyZeroInteractions(viewTreeObserver) + verifyZeroInteractions(workspace) + verifyZeroInteractions(consumer) + } + + @Test + fun markCompleted_viewNotAttached() { + underTest.markCompleted() + + verify(runnable).run() + verify(consumer).accept(underTest) + verifyZeroInteractions(workspace) + } + + @Test + fun markCompleted_viewAttached() { + underTest.attachTo(launcher) + + underTest.markCompleted() + + verify(runnable).run() + verify(consumer).accept(underTest) + verify(workspace).removeOnAttachStateChangeListener(same(underTest)) + verify(viewTreeObserver).removeOnDrawListener(same(underTest)) + } + + @Test + fun cancel_notRun() { + underTest.cancel() + + verifyZeroInteractions(runnable) + verify(consumer).accept(underTest) + verifyZeroInteractions(workspace) + } +}