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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      https://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.commons.beanutils2;
19  
20  import static org.junit.jupiter.api.Assertions.assertFalse;
21  import static org.junit.jupiter.api.Assertions.assertTrue;
22  
23  import java.util.function.Predicate;
24  
25  import org.junit.jupiter.api.Test;
26  
27  /**
28   * Unit test for {@link BeanPredicate}
29   */
30  public class BeanPredicateTest {
31  
32      @Test
33      public void testEqual() {
34          final Predicate<String> p = s -> s.equals("foo");
35          final BeanPredicate<String> predicate = new BeanPredicate<>("stringProperty", p);
36          assertTrue(predicate.test(new TestBean("foo")));
37          assertFalse(predicate.test(new TestBean("bar")));
38      }
39  
40      @Test
41      public void testInstanceOf() {
42          final Predicate<String> p = String.class::isInstance;
43          final BeanPredicate<String> predicate = new BeanPredicate<>("stringProperty", p);
44          assertTrue(predicate.test(new TestBean("foo")));
45          assertTrue(predicate.test(new TestBean("bar")));
46      }
47  
48      @Test
49      public void testNotEqual() {
50          final Predicate<String> p = s -> !s.equals("foo");
51          final BeanPredicate<String> predicate = new BeanPredicate<>("stringProperty", p);
52          assertFalse(predicate.test(new TestBean("foo")));
53          assertTrue(predicate.test(new TestBean("bar")));
54      }
55  
56      @Test
57      public void testNull() {
58          final Predicate<String> p = s -> s == null;
59          final BeanPredicate<String> predicate = new BeanPredicate<>("stringProperty", p);
60          final String nullString = null;
61          assertTrue(predicate.test(new TestBean(nullString)));
62          assertFalse(predicate.test(new TestBean("bar")));
63      }
64  
65  }