InvokeSeveralWays.java revision 15491:6f390eafc676 
1/*
2 * Copyright (c) 2013, 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
24import java.lang.reflect.InvocationTargetException;
25
26/**
27 * Tries various ways of ultimately invoking MethodSupplier.m(),
28 * except that m has been made inaccessible and some exception should be
29 * thrown instead.
30 */
31public class InvokeSeveralWays {
32    public static int test(String args[], Class expected) throws Exception {
33        int failures = 0;
34        try {
35            Class.forName("Invoker").getMethod("invoke").invoke(null);
36            System.out.println("FAIL: No exception throw, probably failed to load modified bytecodes for MethodSupplier");
37            failures++;
38        } catch (InvocationTargetException e) {
39            Throwable c = e.getCause();
40            if (BootstrapMethodError.class.isInstance(c)) {
41                c = c.getCause();
42                if (expected.isInstance(c))
43                    System.out.println("EXPECTED: " + expected.getName() + ", "+ c);
44                else {
45                    failures++;
46                    System.out.println("FAIL: Unexpected wrapped exception " + c);
47                    e.printStackTrace(System.out);
48                }
49            } else {
50                failures++;
51                System.out.println("FAIL: Exception from MethodHandle invocation not wrapped in BootstrapMethodError " + c);
52                e.printStackTrace(System.out);
53            }
54        } catch (Throwable e) {
55            failures++;
56            System.out.println("FAIL: Unexpected exception has been caught " + e);
57            e.printStackTrace(System.out);
58        }
59        System.out.println();
60        try {
61            Class.forName("Invoker").getMethod("invoke2").invoke(null);
62            System.out.println("FAIL: No exception throw, probably failed to load modified bytecodes for MethodSupplier");
63            failures++;
64        } catch (InvocationTargetException e) {
65            Throwable c = e.getCause();
66            if (expected.isInstance(c))
67               System.out.println("EXPECTED: " + expected.getName() + ", "+ c);
68            else {
69               failures++;
70               System.out.println("FAIL: Unexpected wrapped exception " + c);
71               e.printStackTrace(System.out);
72            }
73        } catch (Throwable e) {
74            failures++;
75            System.out.println("FAIL: Unexpected exception has been caught " + e);
76            e.printStackTrace(System.out);
77        }
78        System.out.println();
79        try {
80            Invoker.invoke();
81            System.out.println("FAIL: No exception throw, probably failed to load modified bytecodes for MethodSupplier");
82            failures++;
83        } catch (BootstrapMethodError e) {
84            Throwable c = e.getCause();
85            if (expected.isInstance(c))
86                System.out.println("EXPECTED: " + expected.getName() + ", "+ c);
87            else {
88                failures++;
89                System.out.println("FAIL: Unexpected exception has been caught " + c);
90                e.printStackTrace(System.out);
91            }
92        } catch (Throwable e) {
93            failures++;
94            System.out.println("FAIL: Exception from MethodHandle invocation not wrapped in BootstrapMethodError " + e);
95            e.printStackTrace(System.out);
96        }
97        System.out.println();
98        try {
99            Invoker.invoke2();
100            System.out.println("FAIL: No exception throw, probably failed to load modified bytecodes for MethodSupplier");
101            failures++;
102         } catch (Throwable e) {
103            if (expected.isInstance(e))
104               System.out.println("EXPECTED: " + expected.getName() + ", "+ e);
105            else {
106                failures++;
107                System.out.println("FAIL: Unexpected exception has been caught " + e);
108                e.printStackTrace(System.out);
109            }
110        }
111        System.out.println();
112        if (failures > 0) {
113          System.out.println("Saw " + failures + " failures");
114        }
115        return failures;
116    }
117}
118