core/src/test/java/org/apache/accumulo/core/data/ArrayByteSequenceTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file 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
 *
 *     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.apache.accumulo.core.data;

import static org.junit.Assert.assertEquals;

import java.nio.ByteBuffer;

import org.junit.Before;
import org.junit.Test;

public class ArrayByteSequenceTest {

  ArrayByteSequence abs;
  byte[] data;

  @Before
  public void setUp() {
    data = new byte[] {'s', 'm', 'i', 'l', 'e', 's'};
    abs = new ArrayByteSequence(data);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testInvalidByteBufferBounds0() {
    abs = new ArrayByteSequence(data, -1, 0);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testInvalidByteBufferBounds1() {
    abs = new ArrayByteSequence(data, data.length + 1, 0);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testInvalidByteBufferBounds2() {
    abs = new ArrayByteSequence(data, 0, -1);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testInvalidByteBufferBounds3() {
    abs = new ArrayByteSequence(data, 6, 2);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testInvalidByteAt0() {
    abs.byteAt(-1);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testInvalidByteAt1() {
    abs.byteAt(data.length);
  }

  @Test
  public void testSubSequence() {
    assertEquals(0, abs.subSequence(0, 0).length());
    assertEquals("mile", abs.subSequence(1, 5).toString());
  }

  @Test(expected = IllegalArgumentException.class)
  public void testInvalidSubsequence0() {
    abs.subSequence(5, 1);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testInvalidSubsequence1() {
    abs.subSequence(-1, 1);
  }

  @Test(expected = IllegalArgumentException.class)
  public void testInvalidSubsequence3() {
    abs.subSequence(0, 10);
  }

  @Test
  public void testFromByteBuffer() {
    ByteBuffer bb = ByteBuffer.wrap(data, 1, 4);
    abs = new ArrayByteSequence(bb);

    assertEquals("mile", abs.toString());

    bb = bb.asReadOnlyBuffer();
    abs = new ArrayByteSequence(bb);

    assertEquals("mile", abs.toString());
  }

  @Test
  public void testToString() {
    assertEquals("String conversion should round trip correctly", "",
        new ArrayByteSequence("").toString());
  }

}