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.causeway.applib.util;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  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 lombok.Getter;
  import lombok.RequiredArgsConstructor;
  
  @SuppressWarnings("deprecation")
  class ObjectContractsTest_equals {
  
      static class Invoice4 {
          private static final String KEY_PROPERTIES = "number";
  
          private String number;
          public String getNumber() {
              return number;
          }
          public void setNumber(final String number) {
              this.number = number;
          }
          @Override
          public int hashCode() {
              return ObjectContracts.hashCode(this, KEY_PROPERTIES);
          }
          @Override
          public boolean equals(final Object obj) {
              return ObjectContracts.equals(this, obj, KEY_PROPERTIES);
          }
  
      }
  
      private Invoice4 p;
      private Invoice4 q;
      private Invoice4 r;
      private String x;
  
      @BeforeEach
      public void setUp() throws Exception {
          p = new Invoice4();
          p.setNumber("123");
          q = new Invoice4();
          q.setNumber("123");
          r = new Invoice4();
          r.setNumber("456");
  
          x = "this is not an invoice";
      }
  
      @Test
      public void happyCase() throws Exception {
          assertTrue(ObjectContracts.equals(p, q, "number"));
      }
  
      @Test
      public void nullsAreEqual() throws Exception {
          assertTrue(ObjectContracts.equals(null, null, "number"));
      }
  
      @Test
      public void notEqualDifferentValues() throws Exception {
          assertFalse(ObjectContracts.equals(p, r, "number"));
      }
  
      @Test
      public void notEqualDifferentTypes() throws Exception {
          assertFalse(ObjectContracts.equals(p, x, "number"));
      }
  
      @Test
      public void notEqualNull() throws Exception {
          assertFalse(ObjectContracts.equals(p, null, "number"));
      }
  
      @RequiredArgsConstructor(staticName = "of")
      public static class ComplexNumber implements Comparable<ComplexNumber> {
  
          @Getter private final int real;
          @Getter private final int imaginary;
  
          private ObjectContracts.ObjectContract<ComplexNumber> contract
                  = ObjectContracts.contract(ComplexNumber.class)
                      .thenUse("real", ComplexNumber::getReal)
                      .thenUse("imaginary", ComplexNumber::getImaginary);
  
          @Override
          public boolean equals(final Object o) {
              return contract.equals(this, o);
          }
  
          @Override
          public int hashCode() {
              return contract.hashCode(this);
          }
  
          @Override
          public int compareTo(final ComplexNumber other) {
              return contract.compare(this, other);
          }
  
          @Override
          public String toString() {
              return contract.toString(this);
          }
      }
  
      @Test
      public void more_complex_scenario() {
          final ComplexNumber cn1 = ComplexNumber.of(3, 4);
          final ComplexNumber cn2 = ComplexNumber.of(3, 4);
  
          assertEquals(cn1, cn2);
      }
  
  }
  