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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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import junit.framework.*; |
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import java.util.*; |
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|
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import java.util.SplittableRandom; |
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import java.util.concurrent.atomic.AtomicInteger; |
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import java.util.concurrent.atomic.AtomicLong; |
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import java.util.concurrent.atomic.LongAdder; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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public class SplittableRandomTest extends JSR166TestCase { |
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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(SplittableRandomTest.class); |
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* same values for nextLong. |
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*/ |
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public void testSeedConstructor() { |
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for (long seed = 2; seed < MAX_LONG_BOUND; seed += 15485863) { |
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for (long seed = 2; seed < MAX_LONG_BOUND; seed += 15485863) { |
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SplittableRandom sr1 = new SplittableRandom(seed); |
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SplittableRandom sr2 = new SplittableRandom(seed); |
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for (int i = 0; i < REPS; ++i) |
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/** |
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* nextInt(non-positive) throws IllegalArgumentException |
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*/ |
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public void testNextIntNonPositive() { |
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public void testNextIntBoundNonPositive() { |
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SplittableRandom sr = new SplittableRandom(); |
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Runnable[] throwingActions = { |
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() -> sr.nextInt(-17), |
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*/ |
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public void testNextIntBounded() { |
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SplittableRandom sr = new SplittableRandom(); |
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for (int i = 0; i < 2; i++) assertEquals(0, sr.nextInt(1)); |
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// sample bound space across prime number increments |
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for (int bound = 2; bound < MAX_INT_BOUND; bound += 524959) { |
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int f = sr.nextInt(bound); |
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/** |
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* nextLong(non-positive) throws IllegalArgumentException |
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*/ |
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public void testNextLongNonPositive() { |
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> |
public void testNextLongBoundNonPositive() { |
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SplittableRandom sr = new SplittableRandom(); |
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Runnable[] throwingActions = { |
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() -> sr.nextLong(-17L), |
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*/ |
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public void testNextLongBounded() { |
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SplittableRandom sr = new SplittableRandom(); |
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+ |
for (int i = 0; i < 2; i++) assertEquals(0L, sr.nextLong(1L)); |
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for (long bound = 2; bound < MAX_LONG_BOUND; bound += 15485863) { |
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long f = sr.nextLong(bound); |
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assertTrue(0 <= f && f < bound); |
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/** |
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* nextDouble(non-positive) throws IllegalArgumentException |
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*/ |
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< |
public void testNextDoubleNonPositive() { |
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> |
public void testNextDoubleBoundNonPositive() { |
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SplittableRandom sr = new SplittableRandom(); |
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Runnable[] throwingActions = { |
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() -> sr.nextDouble(-17.0d), |
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for (int least = -15485867; least < MAX_INT_BOUND; least += 524959) { |
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for (int bound = least + 2; bound > least && bound < MAX_INT_BOUND; bound += 67867967) { |
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final int lo = least, hi = bound; |
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< |
r.ints(size, lo, hi).parallel(). |
416 |
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forEach(x -> {if (x < lo || x >= hi) |
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< |
fails.getAndIncrement(); }); |
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> |
r.ints(size, lo, hi).parallel().forEach( |
416 |
> |
x -> { |
417 |
> |
if (x < lo || x >= hi) |
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> |
fails.getAndIncrement(); }); |
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} |
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} |
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assertEquals(0, fails.get()); |
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for (long least = -86028121; least < MAX_LONG_BOUND; least += 1982451653L) { |
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for (long bound = least + 2; bound > least && bound < MAX_LONG_BOUND; bound += Math.abs(bound * 7919)) { |
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final long lo = least, hi = bound; |
434 |
< |
r.longs(size, lo, hi).parallel(). |
435 |
< |
forEach(x -> {if (x < lo || x >= hi) |
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< |
fails.getAndIncrement(); }); |
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> |
r.longs(size, lo, hi).parallel().forEach( |
435 |
> |
x -> { |
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> |
if (x < lo || x >= hi) |
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> |
fails.getAndIncrement(); }); |
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} |
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} |
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assertEquals(0, fails.get()); |
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for (double least = 0.00011; least < 1.0e20; least *= 9) { |
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for (double bound = least * 1.0011; bound < 1.0e20; bound *= 17) { |
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final double lo = least, hi = bound; |
453 |
< |
r.doubles(size, lo, hi).parallel(). |
454 |
< |
forEach(x -> {if (x < lo || x >= hi) |
455 |
< |
fails.getAndIncrement(); }); |
453 |
> |
r.doubles(size, lo, hi).parallel().forEach( |
454 |
> |
x -> { |
455 |
> |
if (x < lo || x >= hi) |
456 |
> |
fails.getAndIncrement(); }); |
457 |
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} |
458 |
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} |
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assertEquals(0, fails.get()); |