|
1 /* |
|
2 * Copyright 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or |
|
21 * have any questions. |
|
22 */ |
|
23 |
|
24 /* |
|
25 * @test |
|
26 * @bug 5037068 |
|
27 * @summary Test import/export constructors and methods |
|
28 * @author Martin Buchholz |
|
29 */ |
|
30 |
|
31 import java.nio.*; |
|
32 import java.util.*; |
|
33 |
|
34 public class ImportExport { |
|
35 final Random rnd = new Random(); |
|
36 |
|
37 void equal(byte[] x, byte[] y) { |
|
38 check(Arrays.equals(x, y)); |
|
39 } |
|
40 |
|
41 void equal(long[] x, long[] y) { |
|
42 check(Arrays.equals(x, y)); |
|
43 } |
|
44 |
|
45 void equal(byte[] bytes, BitSet s) { |
|
46 equal(s, BitSet.valueOf(bytes)); |
|
47 equal(s, BitSet.valueOf(ByteBuffer.wrap(bytes))); |
|
48 equal(s, BitSet.valueOf( |
|
49 ByteBuffer.wrap( |
|
50 Arrays.copyOf(bytes, bytes.length + 8 + rnd.nextInt(8))) |
|
51 .order(ByteOrder.LITTLE_ENDIAN) |
|
52 .asLongBuffer())); |
|
53 } |
|
54 |
|
55 void checkEmptyBitSet(BitSet s) { |
|
56 equal(s.toByteArray(), new byte[0]); |
|
57 equal(s.toLongArray(), new long[0]); |
|
58 check(s.isEmpty()); |
|
59 } |
|
60 |
|
61 void test(String[] args) throws Throwable { |
|
62 for (int i = 0; i < 17; i++) { |
|
63 byte[] bytes = new byte[i]; |
|
64 BitSet s = new BitSet(); |
|
65 equal(bytes, s); |
|
66 equal(BitSet.valueOf(bytes).toByteArray(), new byte[0]); |
|
67 if (i > 0) { |
|
68 int k = rnd.nextInt(i); |
|
69 for (int j = 0; j < 8; j++) { |
|
70 bytes[k] |= 1 << j; |
|
71 s.set(8*k+j); |
|
72 equal(bytes, s); |
|
73 byte[] expected = new byte[k+1]; expected[k] = bytes[k]; |
|
74 equal(BitSet.valueOf(bytes).toByteArray(), expected); |
|
75 ByteBuffer bb = ByteBuffer.wrap(bytes); |
|
76 bb.position(k); |
|
77 equal(BitSet.valueOf(bb).toByteArray(), |
|
78 new byte[]{bytes[k]}); |
|
79 } |
|
80 } |
|
81 } |
|
82 for (int i = 0; i < 100; i++) { |
|
83 byte[] bytes = new byte[rnd.nextInt(17)]; |
|
84 for (int j = 0; j < bytes.length; j++) |
|
85 bytes[j] = (byte) rnd.nextInt(0x100); |
|
86 BitSet s = BitSet.valueOf(bytes); |
|
87 byte[] expected = s.toByteArray(); |
|
88 equal(expected.length, (s.length()+7)/8); |
|
89 if (bytes.length == 0) |
|
90 continue; |
|
91 if (expected.length > 0) |
|
92 check(expected[expected.length-1] != 0); |
|
93 if (bytes[bytes.length-1] != 0) |
|
94 equal(bytes, expected); |
|
95 int n = rnd.nextInt(8 * bytes.length); |
|
96 equal(s.get(n), ((bytes[n/8] & (1<<(n%8))) != 0)); |
|
97 } |
|
98 |
|
99 for (int i = 0; i < 3; i++) { |
|
100 checkEmptyBitSet(BitSet.valueOf(new byte[i])); |
|
101 checkEmptyBitSet(BitSet.valueOf(ByteBuffer.wrap(new byte[i]))); |
|
102 checkEmptyBitSet(BitSet.valueOf(new byte[i*64])); |
|
103 checkEmptyBitSet(BitSet.valueOf(ByteBuffer.wrap(new byte[i*64]))); |
|
104 checkEmptyBitSet(BitSet.valueOf(new long[i])); |
|
105 checkEmptyBitSet(BitSet.valueOf(LongBuffer.wrap(new long[i]))); |
|
106 } |
|
107 |
|
108 { |
|
109 long[] longs = new long[rnd.nextInt(10)]; |
|
110 for (int i = 0; i < longs.length; i++) |
|
111 longs[i] = rnd.nextLong(); |
|
112 LongBuffer b1 = LongBuffer.wrap(longs); |
|
113 LongBuffer b2 = LongBuffer.allocate(longs.length + 10); |
|
114 for (int i = 0; i < b2.limit(); i++) |
|
115 b2.put(i, rnd.nextLong()); |
|
116 int beg = rnd.nextInt(10); |
|
117 b2.position(beg); |
|
118 b2.put(longs); |
|
119 b2.limit(b2.position()); |
|
120 b2.position(beg); |
|
121 BitSet s1 = BitSet.valueOf(longs); |
|
122 BitSet s2 = BitSet.valueOf(b1); |
|
123 BitSet s3 = BitSet.valueOf(b2); |
|
124 equal(s1, s2); |
|
125 equal(s1, s3); |
|
126 if (longs.length > 0 && longs[longs.length -1] != 0) { |
|
127 equal(longs, s1.toLongArray()); |
|
128 equal(longs, s2.toLongArray()); |
|
129 equal(longs, s3.toLongArray()); |
|
130 } |
|
131 for (int i = 0; i < 64 * longs.length; i++) { |
|
132 equal(s1.get(i), ((longs [i/64] & (1L<<(i%64))) != 0)); |
|
133 equal(s2.get(i), ((b1.get(i/64) & (1L<<(i%64))) != 0)); |
|
134 equal(s3.get(i), ((b2.get(b2.position()+i/64) & (1L<<(i%64))) != 0)); |
|
135 } |
|
136 } |
|
137 } |
|
138 |
|
139 //--------------------- Infrastructure --------------------------- |
|
140 volatile int passed = 0, failed = 0; |
|
141 void pass() {passed++;} |
|
142 void fail() {failed++; Thread.dumpStack();} |
|
143 void fail(String msg) {System.err.println(msg); fail();} |
|
144 void unexpected(Throwable t) {failed++; t.printStackTrace();} |
|
145 void check(boolean cond) {if (cond) pass(); else fail();} |
|
146 void equal(Object x, Object y) { |
|
147 if (x == null ? y == null : x.equals(y)) pass(); |
|
148 else fail(x + " not equal to " + y);} |
|
149 public static void main(String[] args) throws Throwable { |
|
150 new ImportExport().instanceMain(args);} |
|
151 void instanceMain(String[] args) throws Throwable { |
|
152 try {test(args);} catch (Throwable t) {unexpected(t);} |
|
153 System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
|
154 if (failed > 0) throw new AssertionError("Some tests failed");} |
|
155 } |