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/*
* Copyright (C) 2015 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.tv.util;
import android.support.test.filters.SmallTest;
import android.test.MoreAsserts;
import junit.framework.TestCase;
import java.util.Collections;
/**
* Tests for {@link MultiLongSparseArray}.
*/
@SmallTest
public class MultiLongSparseArrayTest extends TestCase {
public void testEmpty() {
MultiLongSparseArray<String> sparseArray = new MultiLongSparseArray<>();
assertSame(Collections.EMPTY_SET, sparseArray.get(0));
}
public void testOneElement() {
MultiLongSparseArray<String> sparseArray = new MultiLongSparseArray<>();
sparseArray.put(0, "foo");
MoreAsserts.assertContentsInAnyOrder(sparseArray.get(0), "foo");
}
public void testTwoElements() {
MultiLongSparseArray<String> sparseArray = new MultiLongSparseArray<>();
sparseArray.put(0, "foo");
sparseArray.put(0, "bar");
MoreAsserts.assertContentsInAnyOrder(sparseArray.get(0), "foo", "bar");
}
public void testClearEmptyCache() {
MultiLongSparseArray<String> sparseArray = new MultiLongSparseArray<>();
sparseArray.clearEmptyCache();
assertEquals(0, sparseArray.getEmptyCacheSize());
sparseArray.put(0, "foo");
sparseArray.remove(0, "foo");
assertEquals(1, sparseArray.getEmptyCacheSize());
sparseArray.clearEmptyCache();
assertEquals(0, sparseArray.getEmptyCacheSize());
}
public void testMaxEmptyCacheSize() {
MultiLongSparseArray<String> sparseArray = new MultiLongSparseArray<>();
sparseArray.clearEmptyCache();
assertEquals(0, sparseArray.getEmptyCacheSize());
for (int i = 0; i <= MultiLongSparseArray.DEFAULT_MAX_EMPTIES_KEPT + 2; i++) {
sparseArray.put(i, "foo");
}
for (int i = 0; i <= MultiLongSparseArray.DEFAULT_MAX_EMPTIES_KEPT + 2; i++) {
sparseArray.remove(i, "foo");
}
assertEquals(MultiLongSparseArray.DEFAULT_MAX_EMPTIES_KEPT,
sparseArray.getEmptyCacheSize());
sparseArray.clearEmptyCache();
assertEquals(0, sparseArray.getEmptyCacheSize());
}
public void testReuseEmptySets() {
MultiLongSparseArray<String> sparseArray = new MultiLongSparseArray<>();
sparseArray.clearEmptyCache();
assertEquals(0, sparseArray.getEmptyCacheSize());
// create a bunch of sets
for (int i = 0; i <= MultiLongSparseArray.DEFAULT_MAX_EMPTIES_KEPT + 2; i++) {
sparseArray.put(i, "foo");
}
// remove them so they are all put in the cache.
for (int i = 0; i <= MultiLongSparseArray.DEFAULT_MAX_EMPTIES_KEPT + 2; i++) {
sparseArray.remove(i, "foo");
}
assertEquals(MultiLongSparseArray.DEFAULT_MAX_EMPTIES_KEPT,
sparseArray.getEmptyCacheSize());
// now create elements, that use the cached empty sets.
for (int i = 0; i < MultiLongSparseArray.DEFAULT_MAX_EMPTIES_KEPT; i++) {
sparseArray.put(10 + i, "bar");
assertEquals(MultiLongSparseArray.DEFAULT_MAX_EMPTIES_KEPT - i - 1,
sparseArray.getEmptyCacheSize());
}
}
}
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