NPE.java revision 12745:f068a4ffddd2 
1/*
2 * Copyright (c) 2012, 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/**
25 * @test
26 * @bug 7197642
27 * @summary test ServiceLoader.load methods for NullPointerException.
28 */
29import java.util.ServiceLoader;
30import java.util.Arrays;
31
32public final class NPE {
33    abstract static class Test {
34        String name;
35
36        Test(String name) { this.name = name; }
37
38        abstract void run();
39    }
40
41    static Test load = new Test("ServiceLoader.load(null)") {
42        void run() { ServiceLoader.load(null); }
43    };
44
45    static Test loadWithClassLoader = new Test("ServiceLoader.load(null, loader)") {
46        void run() { ServiceLoader.load(null, NPE.class.getClassLoader()); }
47    };
48
49    static Test loadInstalled = new Test("ServiceLoader.loadInstalled(null)") {
50        void run() { ServiceLoader.loadInstalled(null); }
51    };
52
53    public static void main(String[] args) throws Exception {
54        for (Test t : Arrays.asList(load, loadWithClassLoader, loadInstalled)) {
55            NullPointerException caught = null;
56            try {
57                t.run();
58            } catch (NullPointerException e) {
59                caught = e;
60            }
61            if (caught == null) {
62                throw new RuntimeException("NullPointerException expected for method invocation of " + t.name);
63            }
64        }
65    }
66}
67
68