Examples with SplittableRandom java.util.SplittableRandom used on opensource projects

Example 16 with SplittableRandom

use of java.util.SplittableRandom in project jdk8u_jdk by JetBrains.

the class SplittableRandomTest method intsDataProvider.

@DataProvider(name = "ints")
public static Object[][] intsDataProvider() {
    List<Object[]> data = new ArrayList<>();
    // Function to create a stream using a RandomBoxedSpliterator
    Function<Function<SplittableRandom, Integer>, IntStream> rbsf = sf -> StreamSupport.stream(new RandomBoxedSpliterator<>(new SplittableRandom(), 0, SIZE, sf), false).mapToInt(i -> i);
    // Unbounded
    data.add(new Object[] { TestData.Factory.ofIntSupplier(String.format("new SplittableRandom().ints().limit(%d)", SIZE), () -> new SplittableRandom().ints().limit(SIZE)), randomAsserter(SIZE, Integer.MAX_VALUE, 0) });
    data.add(new Object[] { TestData.Factory.ofIntSupplier(String.format("new SplittableRandom().ints(%d)", SIZE), () -> new SplittableRandom().ints(SIZE)), randomAsserter(SIZE, Integer.MAX_VALUE, 0) });
    data.add(new Object[] { TestData.Factory.ofIntSupplier(String.format("new RandomBoxedSpliterator(0, %d, sr -> sr.nextInt())", SIZE), () -> rbsf.apply(sr -> sr.nextInt())), randomAsserter(SIZE, Integer.MAX_VALUE, 0) });
    for (int b : BOUNDS) {
        for (int o : ORIGINS) {
            final int origin = o;
            final int bound = b;
            data.add(new Object[] { TestData.Factory.ofIntSupplier(String.format("new SplittableRandom().ints(%d, %d).limit(%d)", origin, bound, SIZE), () -> new SplittableRandom().ints(origin, bound).limit(SIZE)), randomAsserter(SIZE, origin, bound) });
            data.add(new Object[] { TestData.Factory.ofIntSupplier(String.format("new SplittableRandom().ints(%d, %d, %d)", SIZE, origin, bound), () -> new SplittableRandom().ints(SIZE, origin, bound)), randomAsserter(SIZE, origin, bound) });
            if (origin == 0) {
                data.add(new Object[] { TestData.Factory.ofIntSupplier(String.format("new RandomBoxedSpliterator(0, %d, sr -> sr.nextInt(%d))", SIZE, bound), () -> rbsf.apply(sr -> sr.nextInt(bound))), randomAsserter(SIZE, origin, bound) });
            }
            data.add(new Object[] { TestData.Factory.ofIntSupplier(String.format("new RandomBoxedSpliterator(0, %d, sr -> sr.nextInt(%d, %d))", SIZE, origin, bound), () -> rbsf.apply(sr -> sr.nextInt(origin, bound))), randomAsserter(SIZE, origin, bound) });
        }
    }
    return data.toArray(new Object[0][]);
}

Example 17 with SplittableRandom

use of java.util.SplittableRandom in project jdk8u_jdk by JetBrains.

the class SplittableRandomTest method doublesDataProvider.

@DataProvider(name = "doubles")
public static Object[][] doublesDataProvider() {
    List<Object[]> data = new ArrayList<>();
    // Function to create a stream using a RandomBoxedSpliterator
    Function<Function<SplittableRandom, Double>, DoubleStream> rbsf = sf -> StreamSupport.stream(new RandomBoxedSpliterator<>(new SplittableRandom(), 0, SIZE, sf), false).mapToDouble(i -> i);
    // Unbounded
    data.add(new Object[] { TestData.Factory.ofDoubleSupplier(String.format("new SplittableRandom().doubles().limit(%d)", SIZE), () -> new SplittableRandom().doubles().limit(SIZE)), randomAsserter(SIZE, Double.MAX_VALUE, 0d) });
    data.add(new Object[] { TestData.Factory.ofDoubleSupplier(String.format("new SplittableRandom().doubles(%d)", SIZE), () -> new SplittableRandom().doubles(SIZE)), randomAsserter(SIZE, Double.MAX_VALUE, 0d) });
    data.add(new Object[] { TestData.Factory.ofDoubleSupplier(String.format("new RandomBoxedSpliterator(0, %d, sr -> sr.nextDouble())", SIZE), () -> rbsf.apply(sr -> sr.nextDouble())), randomAsserter(SIZE, Double.MAX_VALUE, 0d) });
    for (int b : BOUNDS) {
        for (int o : ORIGINS) {
            final double origin = o;
            final double bound = b;
            data.add(new Object[] { TestData.Factory.ofDoubleSupplier(String.format("new SplittableRandom().doubles(%f, %f).limit(%d)", origin, bound, SIZE), () -> new SplittableRandom().doubles(origin, bound).limit(SIZE)), randomAsserter(SIZE, origin, bound) });
            data.add(new Object[] { TestData.Factory.ofDoubleSupplier(String.format("new SplittableRandom().doubles(%d, %f, %f)", SIZE, origin, bound), () -> new SplittableRandom().doubles(SIZE, origin, bound)), randomAsserter(SIZE, origin, bound) });
            if (origin == 0) {
                data.add(new Object[] { TestData.Factory.ofDoubleSupplier(String.format("new RandomBoxedSpliterator(0, %d, sr -> sr.nextDouble(%f))", SIZE, bound), () -> rbsf.apply(sr -> sr.nextDouble(bound))), randomAsserter(SIZE, origin, bound) });
            }
            data.add(new Object[] { TestData.Factory.ofDoubleSupplier(String.format("new RandomBoxedSpliterator(0, %d, sr -> sr.nextDouble(%f, %f))", SIZE, origin, bound), () -> rbsf.apply(sr -> sr.nextDouble(origin, bound))), randomAsserter(SIZE, origin, bound) });
        }
    }
    return data.toArray(new Object[0][]);
}

Example 18 with SplittableRandom

use of java.util.SplittableRandom in project jdk8u_jdk by JetBrains.

the class SplittableRandomTest method testNextLongBoundedNeg.

/**
     * nextLong(negative) throws IllegalArgumentException
     */
@Test(expectedExceptions = IllegalArgumentException.class)
public void testNextLongBoundedNeg() {
    SplittableRandom sr = new SplittableRandom();
    long f = sr.nextLong(-17);
}

Example 19 with SplittableRandom

use of java.util.SplittableRandom in project jdk8u_jdk by JetBrains.

the class SplittableRandomTest method testBadStreamBounds.

/**
     * Invoking bounded ints, long, doubles, with illegal bounds throws
     * IllegalArgumentException
     */
public void testBadStreamBounds() {
    SplittableRandom r = new SplittableRandom();
    executeAndCatchIAE(() -> r.ints(2, 1));
    executeAndCatchIAE(() -> r.ints(10, 42, 42));
    executeAndCatchIAE(() -> r.longs(-1L, -1L));
    executeAndCatchIAE(() -> r.longs(10, 1L, -2L));
    testDoubleBadOriginBound((o, b) -> r.doubles(10, o, b));
}

Example 20 with SplittableRandom

use of java.util.SplittableRandom in project jdk8u_jdk by JetBrains.

the class SplittableRandomTest method testUnsizedIntsCountSeq.

/**
     * A sequential unsized stream of ints generates at least 100 values
     */
public void testUnsizedIntsCountSeq() {
    LongAdder counter = new LongAdder();
    SplittableRandom r = new SplittableRandom();
    long size = 100;
    r.ints().limit(size).forEach(x -> {
        counter.increment();
    });
    assertEquals(counter.sum(), size);
}