1 /*
 2  * Copyright (c) 2022, 2023, 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
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22  */
23 
24 /**
25  * @test
26  * @bug 8284199
27  * @summary Test StructuredTaskScope without --enable-preview
28  * @modules jdk.incubator.concurrent
29  * @run junit/othervm PreviewFeaturesNotEnabled
30  */
31 
32 import jdk.incubator.concurrent.StructuredTaskScope;
33 import org.junit.jupiter.api.Test;
34 import static org.junit.jupiter.api.Assertions.*;
35 
36 class PreviewFeaturesNotEnabled {
37     /**
38      * One-arg constructor needs --enable-preview.
39      */
40     @Test
41     void testUnsupportedOperationException() {
42         assertThrows(UnsupportedOperationException.class, StructuredTaskScope::new);
43     }
44 
45     /**
46      * Two-arg constructor does not need --enable-preview.
47      */
48     @Test
49     void testNoUnsupportedOperationException() {
50         try (var scope = new StructuredTaskScope<Object>(null, Thread::new)) {
51         }
52     }
53 }