/*
    * 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
    *
    *      https://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.apache.commons.lang3.LangAssertions.assertNullPointerException;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  import org.apache.commons.lang3.AbstractLangTest;
  import org.apache.commons.lang3.SerializationUtils;
  import org.junit.jupiter.api.Test;
  
  /**
   * Test the MutableTriple class.
   */
  class MutableTripleTest extends AbstractLangTest {
  
      @Test
      void testBasic() {
          final MutableTriple<Integer, String, Boolean> triple = new MutableTriple<>(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<>(null, "bar", "hello");
          assertNull(triple2.getLeft());
          assertEquals("bar", triple2.getMiddle());
          assertEquals("hello", triple2.getRight());
      }
  
      @Test
      void testDefault() {
          final MutableTriple<Integer, String, Boolean> triple = new MutableTriple<>();
          assertNull(triple.getLeft());
          assertNull(triple.getMiddle());
          assertNull(triple.getRight());
      }
  
      @Test
      void testEmptyArrayGenerics() {
          final MutableTriple<Integer, String, Boolean>[] empty = MutableTriple.emptyArray();
          assertEquals(0, empty.length);
      }
  
      @Test
      void testEmptyArrayLength() {
          @SuppressWarnings("unchecked")
          final MutableTriple<Integer, String, Boolean>[] empty = (MutableTriple<Integer, String, Boolean>[]) MutableTriple.EMPTY_ARRAY;
          assertEquals(0, empty.length);
      }
  
      @Test
      void testEquals() {
          assertEquals(MutableTriple.of(null, "foo", "baz"), MutableTriple.of(null, "foo", "baz"));
          assertNotEquals(MutableTriple.of("foo", 0, Boolean.TRUE), MutableTriple.of("foo", null, Boolean.TRUE));
          assertNotEquals(MutableTriple.of("foo", "bar", "baz"), MutableTriple.of("xyz", "bar", "baz"));
          assertNotEquals(MutableTriple.of("foo", "bar", "baz"), MutableTriple.of("foo", "bar", "blo"));
  
          final MutableTriple<String, String, String> p = MutableTriple.of("foo", "bar", "baz");
          assertEquals(p, p);
          assertNotEquals(p, new Object());
      }
  
      @Test
      void testHashCode() {
          assertEquals(MutableTriple.of(null, "foo", "baz").hashCode(), MutableTriple.of(null, "foo", "baz").hashCode());
      }
  
      @Test
      void testMutate() {
          final MutableTriple<Integer, String, Boolean> triple = new MutableTriple<>(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
      void testOfNonNull() {
          assertNullPointerException(() -> MutableTriple.ofNonNull(null, null, null));
          assertNullPointerException(() -> MutableTriple.ofNonNull(null, null, "z"));
          assertNullPointerException(() -> MutableTriple.ofNonNull(null, "y", "z"));
          assertNullPointerException(() -> MutableTriple.ofNonNull("x", null, null));
         assertNullPointerException(() -> MutableTriple.ofNonNull("x", "y", null));
         final MutableTriple<String, String, String> pair = MutableTriple.ofNonNull("x", "y", "z");
         assertEquals("x", pair.left);
         assertEquals("y", pair.middle);
         assertEquals("z", pair.right);
     }
 
     @Test
     void testSerialization() throws Exception {
         final MutableTriple<Integer, String, Boolean> origTriple = MutableTriple.of(0, "foo", Boolean.TRUE);
         final MutableTriple<Integer, String, Boolean> deserializedTriple = SerializationUtils.roundtrip(origTriple);
         assertEquals(origTriple, deserializedTriple);
         assertEquals(origTriple.hashCode(), deserializedTriple.hashCode());
     }
 
     @Test
     void testToString() {
         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
     void testTripleOf() {
         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());
     }
 }