J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 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 | } |