core/src/test/java/com/android/volley/toolbox/PoolingByteArrayOutputStreamTest.java

/*
 * Copyright (C) 2011 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 static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.util.Arrays;
import org.junit.Test;

public class PoolingByteArrayOutputStreamTest {
    @Test
    public void pooledOneBuffer() throws IOException {
        ByteArrayPool pool = new ByteArrayPool(32768);
        writeOneBuffer(pool);
        writeOneBuffer(pool);
        writeOneBuffer(pool);
    }

    @Test
    public void pooledIndividualWrites() throws IOException {
        ByteArrayPool pool = new ByteArrayPool(32768);
        writeBytesIndividually(pool);
        writeBytesIndividually(pool);
        writeBytesIndividually(pool);
    }

    @Test
    public void unpooled() throws IOException {
        ByteArrayPool pool = new ByteArrayPool(0);
        writeOneBuffer(pool);
        writeOneBuffer(pool);
        writeOneBuffer(pool);
    }

    @Test
    public void unpooledIndividualWrites() throws IOException {
        ByteArrayPool pool = new ByteArrayPool(0);
        writeBytesIndividually(pool);
        writeBytesIndividually(pool);
        writeBytesIndividually(pool);
    }

    private void writeOneBuffer(ByteArrayPool pool) throws IOException {
        byte[] data = new byte[16384];
        for (int i = 0; i < data.length; i++) {
            data[i] = (byte) (i & 0xff);
        }
        PoolingByteArrayOutputStream os = new PoolingByteArrayOutputStream(pool);
        os.write(data);

        assertTrue(Arrays.equals(data, os.toByteArray()));
    }

    private void writeBytesIndividually(ByteArrayPool pool) {
        byte[] data = new byte[16384];
        for (int i = 0; i < data.length; i++) {
            data[i] = (byte) (i & 0xff);
        }
        PoolingByteArrayOutputStream os = new PoolingByteArrayOutputStream(pool);
        for (int i = 0; i < data.length; i++) {
            os.write(data[i]);
        }

        assertTrue(Arrays.equals(data, os.toByteArray()));
    }
}