/*
    * 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.commons.lang3.tuple;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertTrue;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutputStream;
  
  import org.junit.Test;
  
  /**
   * Test the MutableTriple class.
   * @version $Id$
   */
  public class MutableTripleTest {
  
      @Test
      public void testBasic() throws Exception {
          final MutableTriple<Integer, String, Boolean> triple = new MutableTriple<Integer, String, Boolean>(0, "foo", Boolean.FALSE);
          assertEquals(0, triple.getLeft().intValue());
          assertEquals("foo", triple.getMiddle());
          assertEquals(Boolean.FALSE, triple.getRight());
          final MutableTriple<Object, String, String> triple2 = new MutableTriple<Object, String, String>(null, "bar", "hello");
          assertNull(triple2.getLeft());
          assertEquals("bar", triple2.getMiddle());
          assertEquals("hello", triple2.getRight());
      }
  
      @Test
      public void testDefault() throws Exception {
          final MutableTriple<Integer, String, Boolean> triple = new MutableTriple<Integer, String, Boolean>();
          assertNull(triple.getLeft());
          assertNull(triple.getMiddle());
          assertNull(triple.getRight());
      }
      
      @Test
      public void testMutate() throws Exception {
          final MutableTriple<Integer, String, Boolean> triple = new MutableTriple<Integer, String, Boolean>(0, "foo", Boolean.TRUE);
          triple.setLeft(42);
          triple.setMiddle("bar");
          triple.setRight(Boolean.FALSE);
          assertEquals(42, triple.getLeft().intValue());
          assertEquals("bar", triple.getMiddle());
          assertEquals(Boolean.FALSE, triple.getRight());
      }
  
      @Test
      public void testTripleOf() throws Exception {
          final MutableTriple<Integer, String, Boolean> triple = MutableTriple.of(0, "foo", Boolean.TRUE);
          assertEquals(0, triple.getLeft().intValue());
          assertEquals("foo", triple.getMiddle());
          assertEquals(Boolean.TRUE, triple.getRight());
          final MutableTriple<Object, String, String> triple2 = MutableTriple.of(null, "bar", "hello");
          assertNull(triple2.getLeft());
          assertEquals("bar", triple2.getMiddle());
          assertEquals("hello", triple2.getRight());
      }
  
      @Test
      public void testEquals() throws Exception {
          assertEquals(MutableTriple.of(null, "foo", "baz"), MutableTriple.of(null, "foo", "baz"));
          assertFalse(MutableTriple.of("foo", 0, Boolean.TRUE).equals(MutableTriple.of("foo", null, Boolean.TRUE)));
          assertFalse(MutableTriple.of("foo", "bar", "baz").equals(MutableTriple.of("xyz", "bar", "baz")));
          assertFalse(MutableTriple.of("foo", "bar", "baz").equals(MutableTriple.of("foo", "bar", "blo")));
  
          final MutableTriple<String, String, String> p = MutableTriple.of("foo", "bar", "baz");
          assertTrue(p.equals(p));
          assertFalse(p.equals(new Object()));
      }
  
      @Test
      public void testHashCode() throws Exception {
          assertEquals(MutableTriple.of(null, "foo", "baz").hashCode(), MutableTriple.of(null, "foo", "baz").hashCode());
      }
  
      @Test
      public void testToString() throws Exception {
          assertEquals("(null,null,null)", MutableTriple.of(null, null, null).toString());
         assertEquals("(null,two,null)", MutableTriple.of(null, "two", null).toString());
         assertEquals("(one,null,null)", MutableTriple.of("one", null, null).toString());
         assertEquals("(one,two,null)", MutableTriple.of("one", "two", null).toString());
         assertEquals("(null,two,three)", MutableTriple.of(null, "two", "three").toString());
         assertEquals("(one,null,three)", MutableTriple.of("one", null, "three").toString());
         assertEquals("(one,two,three)", MutableTriple.of("one", "two", "three").toString());
     }
 
     @Test
     @SuppressWarnings("unchecked")
     public void testSerialization() throws Exception {
         final MutableTriple<Integer, String, Boolean> origTriple = MutableTriple.of(0, "foo", Boolean.TRUE);
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
         final ObjectOutputStream out = new ObjectOutputStream(baos);
         out.writeObject(origTriple);
         final MutableTriple<Integer, String, Boolean> deserializedTriple = (MutableTriple<Integer, String, Boolean>) new ObjectInputStream(
                 new ByteArrayInputStream(baos.toByteArray())).readObject();
         assertEquals(origTriple, deserializedTriple);
         assertEquals(origTriple.hashCode(), deserializedTriple.hashCode());
     }
 }