httpcore5/src/test/java/org/apache/hc/core5/http/nio/entity/TestDigestingEntityConsumer.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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 * KIND, either express or implied.  See the License for the
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package org.apache.hc.core5.http.nio.entity;

import java.nio.ByteBuffer;

import org.apache.hc.core5.util.TextUtils;
import org.junit.Assert;
import org.junit.Test;

public class TestDigestingEntityConsumer {

    @Test
    public void testConsumeData() throws Exception {

        final DigestingEntityConsumer<String> consumer = new DigestingEntityConsumer<>("MD5",
                new StringAsyncEntityConsumer());

        consumer.consume(ByteBuffer.wrap(new byte[]{'1', '2', '3'}));
        consumer.consume(ByteBuffer.wrap(new byte[]{'4', '5'}));
        consumer.consume(ByteBuffer.wrap(new byte[]{}));
        consumer.streamEnd(null);

        Assert.assertEquals("12345", consumer.getContent());
        Assert.assertEquals("827ccb0eea8a706c4c34a16891f84e7b", TextUtils.toHexString(consumer.getDigest()));
    }

}