--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/util/BitSet/ImportExport.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 5037068
+ * @summary Test import/export constructors and methods
+ * @author Martin Buchholz
+ */
+
+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");}
+}