Examples with Longs java8.lang.Longs used on opensource projects

Example 11 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class ThreadLocalRandomTest method testLongsCount.

/**
 * A parallel sized stream of longs generates the given number of values
 */
public void testLongsCount() {
    LongAdder counter = new LongAdder();
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 0;
    for (int reps = 0; reps < REPS; ++reps) {
        counter.reset();
        r.longs(size).parallel().forEach(x -> {
            counter.increment();
        });
        assertEquals(counter.sum(), size);
        size += 524959;
    }
}

Example 12 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class ThreadLocalRandomTest method testBoundedLongs.

/**
 * Each of a parallel sized stream of bounded longs is within bounds
 */
public void testBoundedLongs() {
    AtomicInteger fails = new AtomicInteger(0);
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 123L;
    for (long least = -86028121; least < MAX_LONG_BOUND; least += 1982451653L) {
        for (long bound = least + 2; bound > least && bound < MAX_LONG_BOUND; bound += Math.abs(bound * 7919)) {
            final long lo = least, hi = bound;
            r.longs(size, lo, hi).parallel().forEach(x -> {
                if (x < lo || x >= hi)
                    fails.getAndIncrement();
            });
        }
    }
    assertEquals(fails.get(), 0);
}

Example 13 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class ThreadLocalRandomTest method testUnsizedLongsCount.

/**
 * A parallel unsized stream of longs generates at least 100 values
 */
public void testUnsizedLongsCount() {
    LongAdder counter = new LongAdder();
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 100;
    r.longs().limit(size).parallel().forEach(x -> {
        counter.increment();
    });
    assertEquals(counter.sum(), size);
}

Example 14 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class SplittableRandomTest method longsDataProvider.

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

Example 15 with Longs

use of java8.lang.Longs in project streamsupport by stefan-zobel.

the class SplittableRandomTest method testUnsizedLongsCountSeq.

/**
 * A sequential unsized stream of longs generates at least 100 values
 */
public void testUnsizedLongsCountSeq() {
    final LongAdder counter = new LongAdder();
    SplittableRandom r = new SplittableRandom();
    long size = 100;
    r.longs().limit(size).forEach(new LongConsumer() {

        @Override
        public void accept(long x) {
            counter.increment();
        }
    });
    assertEquals(counter.sum(), size);
}