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/*
* Copyright (C) 2012 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.volley.toolbox;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.junit.Assert.*;
public class ByteArrayPoolTest {
@Test public void reusesBuffer() {
ByteArrayPool pool = new ByteArrayPool(32);
byte[] buf1 = pool.getBuf(16);
byte[] buf2 = pool.getBuf(16);
pool.returnBuf(buf1);
pool.returnBuf(buf2);
byte[] buf3 = pool.getBuf(16);
byte[] buf4 = pool.getBuf(16);
assertTrue(buf3 == buf1 || buf3 == buf2);
assertTrue(buf4 == buf1 || buf4 == buf2);
assertTrue(buf3 != buf4);
}
@Test public void obeysSizeLimit() {
ByteArrayPool pool = new ByteArrayPool(32);
byte[] buf1 = pool.getBuf(16);
byte[] buf2 = pool.getBuf(16);
byte[] buf3 = pool.getBuf(16);
pool.returnBuf(buf1);
pool.returnBuf(buf2);
pool.returnBuf(buf3);
byte[] buf4 = pool.getBuf(16);
byte[] buf5 = pool.getBuf(16);
byte[] buf6 = pool.getBuf(16);
assertTrue(buf4 == buf2 || buf4 == buf3);
assertTrue(buf5 == buf2 || buf5 == buf3);
assertTrue(buf4 != buf5);
assertTrue(buf6 != buf1 && buf6 != buf2 && buf6 != buf3);
}
@Test public void returnsBufferWithRightSize() {
ByteArrayPool pool = new ByteArrayPool(32);
byte[] buf1 = pool.getBuf(16);
pool.returnBuf(buf1);
byte[] buf2 = pool.getBuf(17);
assertNotSame(buf2, buf1);
byte[] buf3 = pool.getBuf(15);
assertSame(buf3, buf1);
}
}
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