1 /*
 2  * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 import org.junit.jupiter.api.Test;
25 import static org.junit.jupiter.api.Assertions.assertEquals;
26 import static org.junit.jupiter.api.Assertions.assertNotNull;
27 import static org.junit.jupiter.api.Assertions.assertNull;
28 import static org.junit.jupiter.api.Assertions.assertThrows;
29 import static org.junit.jupiter.api.Assertions.assertTrue;
30 
31 /*
32  * @test
33  * @summary Basic tests for java.lang.IdentityException
34  * @enablePreview
35  * @run junit ${test.main.class}
36  */
37 class IdentityExceptionBasicTest {
38 
39     /*
40      * Verify the no-arg constructor
41      */
42     @Test
43     void testNoArg() throws Exception {
44         // verify that there's no exception message and no cause
45         final IdentityException ex = new IdentityException();
46         assertNull(ex.getMessage(), "unexpected exception message");
47         assertNull(ex.getCause(), "unexpected cause");
48     }
49 
50     /*
51      * Verify the constructor which takes the String arg
52      */
53     @Test
54     void testStringArg() throws Exception {
55         // verify that null is allowed
56         final IdentityException ex = new IdentityException((String) null);
57         assertNull(ex.getMessage(), "unexpected exception message");
58         assertNull(ex.getCause(), "unexpected cause");
59 
60         // verify custom exception message
61         final IdentityException ex2 = new IdentityException("hello world");
62         assertEquals("hello world", ex2.getMessage(), "unexpected exception message");
63         assertNull(ex2.getCause(), "unexpected cause");
64     }
65 }