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/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.volley.toolbox;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import static org.junit.Assert.*;
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public class ByteArrayPoolTest {
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@Test public void reusesBuffer() {
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ByteArrayPool pool = new ByteArrayPool(32);
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byte[] buf1 = pool.getBuf(16);
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byte[] buf2 = pool.getBuf(16);
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pool.returnBuf(buf1);
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pool.returnBuf(buf2);
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byte[] buf3 = pool.getBuf(16);
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byte[] buf4 = pool.getBuf(16);
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assertTrue(buf3 == buf1 || buf3 == buf2);
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assertTrue(buf4 == buf1 || buf4 == buf2);
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assertTrue(buf3 != buf4);
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}
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@Test public void obeysSizeLimit() {
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ByteArrayPool pool = new ByteArrayPool(32);
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byte[] buf1 = pool.getBuf(16);
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byte[] buf2 = pool.getBuf(16);
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byte[] buf3 = pool.getBuf(16);
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pool.returnBuf(buf1);
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pool.returnBuf(buf2);
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pool.returnBuf(buf3);
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byte[] buf4 = pool.getBuf(16);
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byte[] buf5 = pool.getBuf(16);
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byte[] buf6 = pool.getBuf(16);
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assertTrue(buf4 == buf2 || buf4 == buf3);
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assertTrue(buf5 == buf2 || buf5 == buf3);
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assertTrue(buf4 != buf5);
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assertTrue(buf6 != buf1 && buf6 != buf2 && buf6 != buf3);
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}
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@Test public void returnsBufferWithRightSize() {
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ByteArrayPool pool = new ByteArrayPool(32);
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byte[] buf1 = pool.getBuf(16);
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pool.returnBuf(buf1);
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byte[] buf2 = pool.getBuf(17);
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assertNotSame(buf2, buf1);
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byte[] buf3 = pool.getBuf(15);
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assertSame(buf3, buf1);
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}
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}
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