| /* |
| * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 5037068 |
| * @summary Test import/export constructors and methods |
| * @author Martin Buchholz |
| * @key randomness |
| */ |
| |
| import java.nio.*; |
| import java.util.*; |
| |
| public class ImportExport { |
| final Random rnd = new Random(); |
| |
| void equal(byte[] x, byte[] y) { |
| check(Arrays.equals(x, y)); |
| } |
| |
| void equal(long[] x, long[] y) { |
| check(Arrays.equals(x, y)); |
| } |
| |
| void equal(byte[] bytes, BitSet s) { |
| equal(s, BitSet.valueOf(bytes)); |
| equal(s, BitSet.valueOf(ByteBuffer.wrap(bytes))); |
| equal(s, BitSet.valueOf( |
| ByteBuffer.wrap( |
| Arrays.copyOf(bytes, bytes.length + 8 + rnd.nextInt(8))) |
| .order(ByteOrder.LITTLE_ENDIAN) |
| .asLongBuffer())); |
| } |
| |
| void checkEmptyBitSet(BitSet s) { |
| equal(s.toByteArray(), new byte[0]); |
| equal(s.toLongArray(), new long[0]); |
| check(s.isEmpty()); |
| } |
| |
| void test(String[] args) throws Throwable { |
| for (int i = 0; i < 17; i++) { |
| byte[] bytes = new byte[i]; |
| BitSet s = new BitSet(); |
| equal(bytes, s); |
| equal(BitSet.valueOf(bytes).toByteArray(), new byte[0]); |
| if (i > 0) { |
| int k = rnd.nextInt(i); |
| for (int j = 0; j < 8; j++) { |
| bytes[k] |= 1 << j; |
| s.set(8*k+j); |
| equal(bytes, s); |
| byte[] expected = new byte[k+1]; expected[k] = bytes[k]; |
| equal(BitSet.valueOf(bytes).toByteArray(), expected); |
| ByteBuffer bb = ByteBuffer.wrap(bytes); |
| bb.position(k); |
| equal(BitSet.valueOf(bb).toByteArray(), |
| new byte[]{bytes[k]}); |
| } |
| } |
| } |
| for (int i = 0; i < 100; i++) { |
| byte[] bytes = new byte[rnd.nextInt(17)]; |
| for (int j = 0; j < bytes.length; j++) |
| bytes[j] = (byte) rnd.nextInt(0x100); |
| BitSet s = BitSet.valueOf(bytes); |
| byte[] expected = s.toByteArray(); |
| equal(expected.length, (s.length()+7)/8); |
| if (bytes.length == 0) |
| continue; |
| if (expected.length > 0) |
| check(expected[expected.length-1] != 0); |
| if (bytes[bytes.length-1] != 0) |
| equal(bytes, expected); |
| int n = rnd.nextInt(8 * bytes.length); |
| equal(s.get(n), ((bytes[n/8] & (1<<(n%8))) != 0)); |
| } |
| |
| for (int i = 0; i < 3; i++) { |
| checkEmptyBitSet(BitSet.valueOf(new byte[i])); |
| checkEmptyBitSet(BitSet.valueOf(ByteBuffer.wrap(new byte[i]))); |
| checkEmptyBitSet(BitSet.valueOf(new byte[i*64])); |
| checkEmptyBitSet(BitSet.valueOf(ByteBuffer.wrap(new byte[i*64]))); |
| checkEmptyBitSet(BitSet.valueOf(new long[i])); |
| checkEmptyBitSet(BitSet.valueOf(LongBuffer.wrap(new long[i]))); |
| } |
| |
| { |
| long[] longs = new long[rnd.nextInt(10)]; |
| for (int i = 0; i < longs.length; i++) |
| longs[i] = rnd.nextLong(); |
| LongBuffer b1 = LongBuffer.wrap(longs); |
| LongBuffer b2 = LongBuffer.allocate(longs.length + 10); |
| for (int i = 0; i < b2.limit(); i++) |
| b2.put(i, rnd.nextLong()); |
| int beg = rnd.nextInt(10); |
| b2.position(beg); |
| b2.put(longs); |
| b2.limit(b2.position()); |
| b2.position(beg); |
| BitSet s1 = BitSet.valueOf(longs); |
| BitSet s2 = BitSet.valueOf(b1); |
| BitSet s3 = BitSet.valueOf(b2); |
| equal(s1, s2); |
| equal(s1, s3); |
| if (longs.length > 0 && longs[longs.length -1] != 0) { |
| equal(longs, s1.toLongArray()); |
| equal(longs, s2.toLongArray()); |
| equal(longs, s3.toLongArray()); |
| } |
| for (int i = 0; i < 64 * longs.length; i++) { |
| equal(s1.get(i), ((longs [i/64] & (1L<<(i%64))) != 0)); |
| equal(s2.get(i), ((b1.get(i/64) & (1L<<(i%64))) != 0)); |
| equal(s3.get(i), ((b2.get(b2.position()+i/64) & (1L<<(i%64))) != 0)); |
| } |
| } |
| } |
| |
| //--------------------- Infrastructure --------------------------- |
| volatile int passed = 0, failed = 0; |
| void pass() {passed++;} |
| void fail() {failed++; Thread.dumpStack();} |
| void fail(String msg) {System.err.println(msg); fail();} |
| void unexpected(Throwable t) {failed++; t.printStackTrace();} |
| void check(boolean cond) {if (cond) pass(); else fail();} |
| void equal(Object x, Object y) { |
| if (x == null ? y == null : x.equals(y)) pass(); |
| else fail(x + " not equal to " + y);} |
| public static void main(String[] args) throws Throwable { |
| new ImportExport().instanceMain(args);} |
| void instanceMain(String[] args) throws Throwable { |
| try {test(args);} catch (Throwable t) {unexpected(t);} |
| System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
| if (failed > 0) throw new AssertionError("Some tests failed");} |
| } |