--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/IntegralPrimitiveToString.java Tue Feb 12 17:04:09 2013 -0800
@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 2012, 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.
+ */
+
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.Arrays;
+import java.util.List;
+import java.util.function.LongFunction;
+import java.util.function.Function;
+
+import static org.testng.Assert.assertEquals;
+
+/**
+ * @test
+ * @run testng IntegralPrimitiveToString
+ * @summary test string conversions for primitive integral types.
+ * @author Mike Duigou
+ */
+public class IntegralPrimitiveToString {
+
+ @Test(dataProvider="numbers")
+ public <N extends Number> void testToString(String description,
+ Function<N, BigInteger> converter,
+ Function<N, BigInteger> unsignedConverter,
+ N[] values,
+ Stringifier<N>[] stringifiers) {
+ System.out.printf("%s : conversions: %d values: %d\n", description, stringifiers.length, values.length);
+ for( N value : values) {
+ BigInteger asBigInt = converter.apply(value);
+ BigInteger asUnsignedBigInt = unsignedConverter.apply(value);
+ for(Stringifier<N> stringifier : stringifiers) {
+ stringifier.assertMatchingToString(value, asBigInt, asUnsignedBigInt, description);
+ }
+ }
+ }
+
+ static class Stringifier<N extends Number> {
+ final boolean signed;
+ final int radix;
+ final Function<N,String> toString;
+ Stringifier(boolean signed, int radix, Function<N,String> toString) {
+ this.signed = signed;
+ this.radix = radix;
+ this.toString = toString;
+ }
+
+ public void assertMatchingToString(N value, BigInteger asSigned, BigInteger asUnsigned, String description) {
+ String expected = signed
+ ? asSigned.toString(radix)
+ : asUnsigned.toString(radix);
+
+ String actual = toString.apply(value);
+
+ assertEquals(actual, expected, description + " conversion should be the same");
+ }
+ }
+
+ @DataProvider(name="numbers", parallel=true)
+ public Iterator<Object[]> testSetProvider() {
+
+ return Arrays.asList(
+ new Object[] { "Byte",
+ (Function<Byte,BigInteger>) b -> BigInteger.valueOf((long) b),
+ (Function<Byte,BigInteger>) b -> BigInteger.valueOf(Integer.toUnsignedLong((byte) b)),
+ numberProvider((LongFunction<Byte>) l -> Byte.valueOf((byte) l), Byte.SIZE),
+ new Stringifier[] {
+ new Stringifier<Byte>(true, 10, b -> b.toString()),
+ new Stringifier<Byte>(true, 10, b -> Byte.toString(b))
+ }
+ },
+ new Object[] { "Short",
+ (Function<Short,BigInteger>) s -> BigInteger.valueOf((long) s),
+ (Function<Short,BigInteger>) s -> BigInteger.valueOf(Integer.toUnsignedLong((short) s)),
+ numberProvider((LongFunction<Short>) l -> Short.valueOf((short) l), Short.SIZE),
+ new Stringifier[] {
+ new Stringifier<Short>(true, 10, s -> s.toString()),
+ new Stringifier<Short>(true, 10, s -> Short.toString( s))
+ }
+ },
+ new Object[] { "Integer",
+ (Function<Integer,BigInteger>) i -> BigInteger.valueOf((long) i),
+ (Function<Integer,BigInteger>) i -> BigInteger.valueOf(Integer.toUnsignedLong(i)),
+ numberProvider((LongFunction<Integer>) l -> Integer.valueOf((int) l), Integer.SIZE),
+ new Stringifier[] {
+ new Stringifier<Integer>(true, 10, i -> i.toString()),
+ new Stringifier<Integer>(true, 10, i -> Integer.toString(i)),
+ new Stringifier<Integer>(false, 2, Integer::toBinaryString),
+ new Stringifier<Integer>(false, 16, Integer::toHexString),
+ new Stringifier<Integer>(false, 8, Integer::toOctalString),
+ new Stringifier<Integer>(true, 2, i -> Integer.toString(i, 2)),
+ new Stringifier<Integer>(true, 8, i -> Integer.toString(i, 8)),
+ new Stringifier<Integer>(true, 10, i -> Integer.toString(i, 10)),
+ new Stringifier<Integer>(true, 16, i -> Integer.toString(i, 16)),
+ new Stringifier<Integer>(true, Character.MAX_RADIX, i -> Integer.toString(i, Character.MAX_RADIX)),
+ new Stringifier<Integer>(false, 10, i -> Integer.toUnsignedString(i)),
+ new Stringifier<Integer>(false, 2, i -> Integer.toUnsignedString(i, 2)),
+ new Stringifier<Integer>(false, 8, i -> Integer.toUnsignedString(i, 8)),
+ new Stringifier<Integer>(false, 10, i -> Integer.toUnsignedString(i, 10)),
+ new Stringifier<Integer>(false, 16, i -> Integer.toUnsignedString(i, 16)),
+ new Stringifier<Integer>(false, Character.MAX_RADIX, i -> Integer.toUnsignedString(i, Character.MAX_RADIX))
+ }
+ },
+ new Object[] { "Long",
+ (Function<Long, BigInteger>) BigInteger::valueOf,
+ (Function<Long, BigInteger>) l -> {
+ if (l >= 0) {
+ return BigInteger.valueOf((long) l);
+ } else {
+ int upper = (int)(l >>> 32);
+ int lower = (int) (long) l;
+
+ // return (upper << 32) + lower
+ return (BigInteger.valueOf(Integer.toUnsignedLong(upper))).shiftLeft(32).
+ add(BigInteger.valueOf(Integer.toUnsignedLong(lower)));
+ }
+ },
+ numberProvider((LongFunction<Long>) Long::valueOf, Long.SIZE),
+ new Stringifier[] {
+ new Stringifier<Long>(true, 10, l -> l.toString()),
+ new Stringifier<Long>(true, 10, l -> Long.toString(l)),
+ new Stringifier<Long>(false, 2, Long::toBinaryString),
+ new Stringifier<Long>(false, 16, Long::toHexString),
+ new Stringifier<Long>(false, 8, Long::toOctalString),
+ new Stringifier<Long>(true, 2, l -> Long.toString(l, 2)),
+ new Stringifier<Long>(true, 8, l -> Long.toString(l, 8)),
+ new Stringifier<Long>(true, 10, l -> Long.toString(l, 10)),
+ new Stringifier<Long>(true, 16, l -> Long.toString(l, 16)),
+ new Stringifier<Long>(true, Character.MAX_RADIX, l -> Long.toString(l, Character.MAX_RADIX)),
+ new Stringifier<Long>(false, 10, Long::toUnsignedString),
+ new Stringifier<Long>(false, 2, l -> Long.toUnsignedString(l, 2)),
+ new Stringifier<Long>(false, 8, l-> Long.toUnsignedString(l, 8)),
+ new Stringifier<Long>(false, 10, l -> Long.toUnsignedString(l, 10)),
+ new Stringifier<Long>(false, 16, l -> Long.toUnsignedString(l, 16)),
+ new Stringifier<Long>(false, Character.MAX_RADIX, l -> Long.toUnsignedString(l, Character.MAX_RADIX))
+ }
+ }
+ ).iterator();
+ }
+ private static final long[] SOME_PRIMES = {
+ 3L, 5L, 7L, 11L, 13L, 17L, 19L, 23L, 29L, 31L, 37L, 41L, 43L, 47L, 53L,
+ 59L, 61L, 71L, 73L, 79L, 83L, 89L, 97L, 101L, 103L, 107L, 109L, 113L,
+ 5953L, 5981L, 5987L, 6007L, 6011L, 6029L, 6037L, 6043L, 6047L, 6053L,
+ 16369L, 16381L, 16411L, 32749L, 32771L, 65521L, 65537L,
+ (long) Integer.MAX_VALUE };
+
+ public <N extends Number> N[] numberProvider(LongFunction<N> boxer, int bits, N... extras) {
+ List<N> numbers = new ArrayList<>();
+
+ for(int bitmag = 0; bitmag < bits; bitmag++) {
+ long value = 1L << bitmag;
+ numbers.add(boxer.apply(value));
+ numbers.add(boxer.apply(value - 1));
+ numbers.add(boxer.apply(value + 1));
+ numbers.add(boxer.apply(-value));
+ for(int divisor = 0; divisor < SOME_PRIMES.length && value < SOME_PRIMES[divisor]; divisor++) {
+ numbers.add(boxer.apply(value - SOME_PRIMES[divisor]));
+ numbers.add(boxer.apply(value + SOME_PRIMES[divisor]));
+ numbers.add(boxer.apply(value * SOME_PRIMES[divisor]));
+ numbers.add(boxer.apply(value / SOME_PRIMES[divisor]));
+ numbers.add(boxer.apply(value | SOME_PRIMES[divisor]));
+ numbers.add(boxer.apply(value & SOME_PRIMES[divisor]));
+ numbers.add(boxer.apply(value ^ SOME_PRIMES[divisor]));
+ }
+ }
+
+ numbers.addAll(Arrays.asList(extras));
+
+ return (N[]) numbers.toArray(new Number[numbers.size()]);
+ }
+}