1 /*
2  * Copyright (c) 2014, 2016, 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  *
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20  * or visit www.oracle.com if you need additional information or have any
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22  */
23 package java.util.stream;
24 
25 import static org.testng.Assert.assertNotNull;
26 import static org.testng.Assert.assertTrue;
27 
28 public final class ThrowableHelper {
29 
checkException(Class<? extends Exception> ce, Runnable r)30     public static void checkException(Class<? extends Exception> ce, Runnable r) {
31         Exception caught = null;
32         try {
33             r.run();
34         } catch (Exception e) {
35             caught = e;
36         }
37 
38         assertNotNull(caught);
39         assertTrue(ce.isInstance(caught));
40     }
41 
checkNPE(Runnable r)42     public static void checkNPE(Runnable r) {
43         checkException(NullPointerException.class, r);
44     }
45 
checkISE(Runnable r)46     public static void checkISE(Runnable r) {
47         checkException(IllegalStateException.class, r);
48     }
49 }
50