TestCompression.java

/*
 * Copyright 2013 Netflix, Inc.
 *
 *    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.netflix.suro.message;

import org.junit.Test;

import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Random;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertTrue;

public class TestCompression {
    @Test
    public void testNoCompression() {
        Compression compression = Compression.NO;
        assertEquals(compression.getId(), 0);

        String testString = "teststring";
        ByteBuffer buffer = ByteBuffer.allocate(testString.length());
        buffer.put(testString.getBytes());
        assertEquals(compression.compress(buffer.array()), buffer.array());
    }

    @Test
    public void testLZF() {
        Compression compression = Compression.LZF;
        assertEquals(compression.getId(), 1);

        Random rand = new Random();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < 4096; ++i) {
            sb.append((char) (rand.nextInt(95) + 32));
        }

        byte[] compressed = compression.compress(sb.toString().getBytes());
        assertNotSame(compressed, sb.toString().getBytes());
        byte[] decompressed = compression.decompress(compressed);
        assertTrue(Arrays.equals(decompressed, sb.toString().getBytes()));
    }
}