Merge "[Test Week] Add ViewOnDrawExecutorTest" into main

2024-07-16 20:42:32 +00:00
parent b0e0e00660 3f5e44e0cc
commit 2d36c4635c
1 changed files with 186 additions and 0 deletions
@@ -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<T> where T : View, T : PageIndicator {
+
+    @Mock private lateinit var runnable: Runnable
+    @Mock private lateinit var consumer: Consumer<ViewOnDrawExecutor>
+    @Mock private lateinit var launcher: Launcher
+    @Mock private lateinit var workspace: Workspace<T>
+    @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)
+    }
+}