httpcore5/src/test/java/org/apache/hc/core5/http/io/entity/TestSerializableEntity.java

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 * distributed with this work for additional information
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 * to you 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
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
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 * KIND, either express or implied.  See the License for the
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package org.apache.hc.core5.http.io.entity;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

import org.junit.Assert;
import org.junit.Test;

public class TestSerializableEntity {

    public static class SerializableObject implements Serializable {

        private static final long serialVersionUID = 1833335861188359573L;

        public final int intValue = 4;

        public final String stringValue = "Hello";

        public SerializableObject() {}
    }

    @Test
    public void testBasics() throws Exception {
        final ByteArrayOutputStream baos = new ByteArrayOutputStream();
        final ObjectOutputStream out = new ObjectOutputStream(baos);

        final Serializable serializableObj = new SerializableObject();
        out.writeObject(serializableObj);

        final SerializableEntity httpentity = new SerializableEntity(serializableObj, null);

        Assert.assertEquals(-1, httpentity.getContentLength());
        Assert.assertNotNull(httpentity.getContent());
        Assert.assertTrue(httpentity.isRepeatable());
        Assert.assertFalse(httpentity.isStreaming());
    }

    @Test
    public void testWriteTo() throws Exception {
        final Serializable serializableObj = new SerializableObject();
        final SerializableEntity httpentity = new SerializableEntity(serializableObj, null);

        final ByteArrayOutputStream out = new ByteArrayOutputStream();
        httpentity.writeTo(out);
        final byte[] bytes = out.toByteArray();
        Assert.assertNotNull(bytes);
        final ObjectInputStream oin = new ObjectInputStream(new ByteArrayInputStream(
                bytes));
        final SerializableObject serIn = (SerializableObject) oin.readObject();
        Assert.assertEquals(4, serIn.intValue);
        Assert.assertEquals("Hello", serIn.stringValue);

        try {
            httpentity.writeTo(null);
            Assert.fail("NullPointerException should have been thrown");
        } catch (final NullPointerException ex) {
            // expected
        }
    }

}