Merge "[Test Week] Add ViewCacheTest" into main (f04eeb5e) · Commits · e / os / BlissLauncher3

src/com/android/launcher3/util/ViewCache.java

+4 −1

Original line number	Diff line number	Diff line
		@@ -21,6 +21,8 @@ import android.view.LayoutInflater;
		import android.view.View;
		import android.view.ViewGroup;

		import androidx.annotation.VisibleForTesting;

		import com.android.launcher3.R;

		/**
		@@ -67,7 +69,8 @@ public class ViewCache {
		}
		}

		private static class CacheEntry {
		@VisibleForTesting
		static class CacheEntry {

		final int mMaxSize;
		final View[] mViews;

tests/src/com/android/launcher3/util/ViewCacheTest.kt

0 → 100644

+89 −0

Original line number	Diff line number	Diff line
		/*
		* 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 androidx.test.ext.junit.runners.AndroidJUnit4
		import androidx.test.platform.app.InstrumentationRegistry
		import com.android.launcher3.R
		import com.android.launcher3.util.ViewCache.CacheEntry
		import com.google.common.truth.Truth.assertThat
		import org.junit.Before
		import org.junit.Test
		import org.junit.runner.RunWith

		@RunWith(AndroidJUnit4::class)
		class ViewCacheTest {

		private lateinit var underTest: ViewCache

		private val context = InstrumentationRegistry.getInstrumentation().context
		private val layoutId =
		context.run { resources.getIdentifier("test_layout_appwidget_blue", "layout", packageName) }

		@Before
		fun setUp() {
		underTest = ViewCache()
		underTest.setCacheSize(layoutId, 5)
		}

		@Test
		fun get_view_from_empty_cache() {
		val view: View = underTest.getView(layoutId, context, null)

		val cacheEntry = view.getTag(R.id.cache_entry_tag_id) as ViewCache.CacheEntry
		assertThat(cacheEntry).isNotNull()
		assertThat(cacheEntry.mMaxSize).isEqualTo(5)
		assertThat(cacheEntry.mCurrentSize).isEqualTo(0)
		assertThat(cacheEntry.mViews[0]).isNull()
		}

		@Test
		fun recyclerView() {
		val view: View = underTest.getView(layoutId, context, null)
		val cacheEntry = view.getTag(R.id.cache_entry_tag_id) as ViewCache.CacheEntry

		underTest.recycleView(layoutId, view)

		assertThat(cacheEntry.mMaxSize).isEqualTo(5)
		assertThat(cacheEntry.mCurrentSize).isEqualTo(1)
		assertThat(cacheEntry.mViews[0]).isSameInstanceAs(view)
		}

		@Test
		fun get_view_from_cache() {
		val view: View = underTest.getView(layoutId, context, null)
		underTest.recycleView(layoutId, view)

		val newView = underTest.getView<View>(layoutId, context, null)

		assertThat(view).isSameInstanceAs(newView)
		}

		@Test
		fun change_tag_id_recyclerView_noOp() {
		val view: View = underTest.getView(layoutId, context, null)
		val cacheEntry = view.getTag(R.id.cache_entry_tag_id) as ViewCache.CacheEntry

		view.setTag(R.id.cache_entry_tag_id, CacheEntry(3))
		underTest.recycleView(layoutId, view)

		assertThat(cacheEntry.mMaxSize).isEqualTo(5)
		assertThat(cacheEntry.mCurrentSize).isEqualTo(0)
		assertThat(cacheEntry.mViews[0]).isNull()
		}
		}