org.commonjava.util.partyline.BinaryFileTest.java Source code

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Here is the source code for org.commonjava.util.partyline.BinaryFileTest.java

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/**
 * Copyright (C) 2015 Red Hat, Inc. (jdcasey@commonjava.org)
 *
 * 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 org.commonjava.util.partyline;

import org.apache.commons.io.IOUtils;
import org.apache.commons.io.output.ByteArrayOutputStream;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.junit.rules.TestName;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.locks.ReentrantLock;

import static org.junit.Assert.fail;

/**
 * Author: Michal Szynkiewicz, michal.l.szynkiewicz@gmail.com
 * Date: 9/3/16
 * Time: 10:46 PM
 */
public class BinaryFileTest {

    @Rule
    public TemporaryFolder temp = new TemporaryFolder();

    @Rule
    public TestName name = new TestName();

    private void writeBinaryFile(OutputStream jos, ByteArrayOutputStream written) throws IOException {
        try {
            for (int i = 0; i < 255; i++) {
                jos.write(i);
                written.write(i);
            }
        } finally {
            IOUtils.closeQuietly(jos);
        }
    }

    @Test
    public void shouldReadBinaryFile() throws IOException, InterruptedException {
        List<String> failures = new ArrayList<>();

        File binaryFile = temp.newFile("binary-file.bin");
        ReentrantLock lock = new ReentrantLock();
        JoinableFile jf = new JoinableFile(binaryFile,
                new LockOwner(binaryFile.getAbsolutePath(), name.getMethodName(), LockLevel.write), true);
        OutputStream jos = jf.getOutputStream();
        InputStream actual = jf.joinStream();

        ByteArrayOutputStream written = new ByteArrayOutputStream();
        writeBinaryFile(jos, written);

        int pos = 0;
        int exp, act;

        ByteArrayInputStream expected = new ByteArrayInputStream(written.toByteArray());
        while ((exp = expected.read()) != -1) {
            act = actual.read();
            pos++;

            if (act != exp) {
                failures.add(String.format("Failure at position %d. Expected %d, got %d", pos, exp, act));
            }
        }

        if (!failures.isEmpty()) {
            fail("Failures: " + failures);
        }
    }
}