1/*
2 * Copyright (c) 2001, 2017, 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 4429365
27 * @summary Checks that ImageReadParam.setSourceProgressivePasses handles
28 *          overflow correctly
29 */
30
31import javax.imageio.ImageReadParam;
32
33public class ImageReadParamPasses {
34
35    private static final int maxint = Integer.MAX_VALUE;
36
37    private static void expect(int i, int j) {
38        if (i != j) {
39            throw new RuntimeException("Expected " + i + ", got " + j);
40        }
41    }
42
43    private static void checkForIAE(int minPass, int numPasses) {
44        ImageReadParam param = new ImageReadParam();
45
46        boolean gotIAE = false;
47        try {
48            param.setSourceProgressivePasses(minPass, numPasses);
49        } catch (IllegalArgumentException iae) {
50            gotIAE = true;
51        }
52        if (!gotIAE) {
53            throw new RuntimeException("Failed to get IAE for wraparound!");
54        }
55    }
56
57    private static void test(int minPass, int numPasses) {
58        ImageReadParam param = new ImageReadParam();
59
60        param.setSourceProgressivePasses(minPass, numPasses);
61        expect(param.getSourceMinProgressivePass(), minPass);
62        expect(param.getSourceNumProgressivePasses(), numPasses);
63
64        int maxPass = numPasses == maxint ? maxint : minPass + numPasses - 1;
65        expect(param.getSourceMaxProgressivePass(), maxPass);
66    }
67
68    public static void main(String[] args) {
69        // Typical case
70        test(17, 30);
71
72        // Read all passes
73        test(0, maxint);
74
75        // Start at pass 17, continue indefinitely
76        test(17, maxint);
77
78        // Start at pass maxint - 10, continue indefinitely
79        test(maxint - 10, maxint);
80
81        // Start at pass maxint - 10, go up to maxint - 1
82        test(maxint - 10, 10);
83
84        // Start at pass maxint - 10, go up to maxint
85        test(maxint - 10, 11);
86
87        // Start at maxint, continue indefinitely :-)
88        test(maxint, maxint);
89
90        // Start at maxint, go up to maxint
91        test(maxint, 1);
92
93        // Check that an IllegalArgumentException is thrown if
94        // wraparound occurs
95        checkForIAE(maxint, 2);
96        checkForIAE(maxint - 5, 10);
97        checkForIAE(10, maxint - 5);
98        checkForIAE(maxint - 1000, maxint - 1000);
99        checkForIAE(maxint - 1, maxint - 1);
100    }
101}
102