1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.launcher3.util 18 19 import android.view.View 20 import androidx.test.ext.junit.runners.AndroidJUnit4 21 import androidx.test.filters.SmallTest 22 import androidx.test.platform.app.InstrumentationRegistry 23 import com.android.launcher3.R 24 import com.android.launcher3.util.ViewCache.CacheEntry 25 import com.google.common.truth.Truth.assertThat 26 import org.junit.Before 27 import org.junit.Test 28 import org.junit.runner.RunWith 29 30 @SmallTest 31 @RunWith(AndroidJUnit4::class) 32 class ViewCacheTest { 33 34 private lateinit var underTest: ViewCache 35 36 private val context = InstrumentationRegistry.getInstrumentation().context 37 private val layoutId = <lambda>null38 context.run { resources.getIdentifier("test_layout_appwidget_blue", "layout", packageName) } 39 40 @Before setUpnull41 fun setUp() { 42 underTest = ViewCache() 43 underTest.setCacheSize(layoutId, 5) 44 } 45 46 @Test get_view_from_empty_cachenull47 fun get_view_from_empty_cache() { 48 val view: View = underTest.getView(layoutId, context, null) 49 50 val cacheEntry = view.getTag(R.id.cache_entry_tag_id) as ViewCache.CacheEntry 51 assertThat(cacheEntry).isNotNull() 52 assertThat(cacheEntry.mMaxSize).isEqualTo(5) 53 assertThat(cacheEntry.mCurrentSize).isEqualTo(0) 54 assertThat(cacheEntry.mViews[0]).isNull() 55 } 56 57 @Test recyclerViewnull58 fun recyclerView() { 59 val view: View = underTest.getView(layoutId, context, null) 60 val cacheEntry = view.getTag(R.id.cache_entry_tag_id) as ViewCache.CacheEntry 61 62 underTest.recycleView(layoutId, view) 63 64 assertThat(cacheEntry.mMaxSize).isEqualTo(5) 65 assertThat(cacheEntry.mCurrentSize).isEqualTo(1) 66 assertThat(cacheEntry.mViews[0]).isSameInstanceAs(view) 67 } 68 69 @Test get_view_from_cachenull70 fun get_view_from_cache() { 71 val view: View = underTest.getView(layoutId, context, null) 72 underTest.recycleView(layoutId, view) 73 74 val newView = underTest.getView<View>(layoutId, context, null) 75 76 assertThat(view).isSameInstanceAs(newView) 77 } 78 79 @Test change_tag_id_recyclerView_noOpnull80 fun change_tag_id_recyclerView_noOp() { 81 val view: View = underTest.getView(layoutId, context, null) 82 val cacheEntry = view.getTag(R.id.cache_entry_tag_id) as ViewCache.CacheEntry 83 84 view.setTag(R.id.cache_entry_tag_id, CacheEntry(3)) 85 underTest.recycleView(layoutId, view) 86 87 assertThat(cacheEntry.mMaxSize).isEqualTo(5) 88 assertThat(cacheEntry.mCurrentSize).isEqualTo(0) 89 assertThat(cacheEntry.mViews[0]).isNull() 90 } 91 } 92