content: /*
   * 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.activemq.artemis.tests.unit.util;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.apache.activemq.artemis.utils.RandomUtil;
  import org.apache.activemq.artemis.utils.UUID;
  import org.apache.activemq.artemis.utils.UUIDGenerator;
  import org.junit.jupiter.api.Test;
  
  public class UUIDTest extends ActiveMQTestBase {
  
     static final int MANY_TIMES = 100000;
  
     @Test
     public void testManyUUIDs() throws Exception {
        Set<String> uuidsSet = new HashSet<>();
  
        UUIDGenerator gen = UUIDGenerator.getInstance();
        for (int i = 0; i < getTimes(); i++) {
           uuidsSet.add(gen.generateStringUUID());
        }
  
        // we put them in a set to check duplicates
        assertEquals(getTimes(), uuidsSet.size());
     }
  
     protected int getTimes() {
        return MANY_TIMES;
     }
  
     @Test
     public void testStringToUuidConversion() {
        UUIDGenerator gen = UUIDGenerator.getInstance();
        for (int i = 0; i < MANY_TIMES; i++) {
           final UUID uuid = gen.generateUUID();
           final String uuidString = uuid.toString();
           byte[] data2 = UUID.stringToBytes(uuidString);
           final UUID uuid2 = new UUID(UUID.TYPE_TIME_BASED, data2);
           assertEqualsByteArrays(uuid.asBytes(), data2);
           assertEquals(uuid, uuid2, uuidString);
           assertEquals(uuidString, uuid2.toString(), uuidString);
        }
     }
  
     @Test
     public void testIsUUID() {
        String id;
        for (int i = 0; i < 10000; i++) {
           id = UUIDGenerator.getInstance().generateStringUUID();
           assertTrue(UUID.isUUID(id), "Invalid id: " + id);
           id = java.util.UUID.randomUUID().toString();
           assertTrue(UUID.isUUID(id), "Invalid id: " + id);
        }
  
        // contains special character
        assertFalse(UUID.isUUID(SimpleString.of("35a8cb5e-1baa-11f0-b57f-3ce1a1d1293!")));
  
        // contains upper-case hex character
        assertFalse(UUID.isUUID(SimpleString.of("35a8cb5e-1bAa-11f0-b57f-3ce1a1d12934")));
  
        // correct length but missing first hyphen
        assertFalse(UUID.isUUID(SimpleString.of("35a8cb5e1baa-11f0-b57f-3ce1a1d12934a")));
  
        // correct length but missing second hyphen
        assertFalse(UUID.isUUID(SimpleString.of("35a8cb5e-1baa11f0-b57f-3ce1a1d12934a")));
  
        // correct length but missing third hyphen
        assertFalse(UUID.isUUID(SimpleString.of("35a8cb5e-1baa-11f0b57f-3ce1a1d12934a")));
  
        // correct length but missing fourth hyphen
        assertFalse(UUID.isUUID(SimpleString.of("35a8cb5e-1baa-11f0-b57f3ce1a1d12934a")));
  
        // too long
        assertFalse(UUID.isUUID(SimpleString.of("35a8cb5e-1baa-11f0-b57f-3ce1a1d12934a")));
  
        // too short
        assertFalse(UUID.isUUID(SimpleString.of("35a8cb5e-1baa-11f0-b57f-3ce1a1d1293")));
  
        // null
        assertFalse(UUID.isUUID(null));
     }
  
     @Test
     public void testStringTrailingUUID() {
        SimpleString uuid = RandomUtil.randomUUIDSimpleString();
        assertEquals(uuid, UUID.stripTrailingUUID(uuid.concat(RandomUtil.randomUUIDSimpleString())));
  
        SimpleString foo = SimpleString.of("foo");
        assertEquals(foo, UUID.stripTrailingUUID(foo));
     }
  }
  