solr/core/src/test/org/apache/solr/util/NumberUtilsTest.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.solr.util;

import org.apache.solr.SolrTestCaseJ4;
import org.junit.Test;

public class NumberUtilsTest extends SolrTestCaseJ4 {
  @Test
  public void testIntToBytes() {
    assertEquals(0, NumberUtils.bytesToInt(null));
    assertEquals(-1, encodeAndDecode(-1));
    assertEquals(-100, encodeAndDecode(-100));
    assertEquals(-1000, encodeAndDecode(-1000));
    assertEquals(0, encodeAndDecode(0));
    assertEquals(100, encodeAndDecode(100));
    assertEquals(1000, encodeAndDecode(1000));
    assertEquals(Integer.MAX_VALUE, encodeAndDecode(Integer.MAX_VALUE));
    assertEquals(Integer.MIN_VALUE, encodeAndDecode(Integer.MIN_VALUE));
  }

  public int encodeAndDecode(int i) {
    return NumberUtils.bytesToInt(NumberUtils.intToBytes(i));
  }
}