Examples with Stream java8.util.stream.Stream used on opensource projects

Example 16 with Stream

use of java8.util.stream.Stream in project streamsupport by stefan-zobel.

the class StringJoinerTest method addAlladd.

void addAlladd() {
    final StringJoiner sj = new StringJoiner(DASH, "{", "}");
    ArrayList<String> firstOne = new ArrayList<String>();
    firstOne.add(ONE);
    firstOne.add(TWO);
    Stream<String> stream = StreamSupport.stream(firstOne);
    stream.forEachOrdered(new java8.util.function.Consumer<String>() {

        @Override
        public void accept(String t) {
            sj.add(t);
        }
    });
    sj.add(THREE);
    String expected = "{" + ONE + DASH + TWO + DASH + THREE + "}";
    assertEquals(sj.toString(), expected);
}

Example 17 with Stream

use of java8.util.stream.Stream in project streamsupport by stefan-zobel.

the class ThreadLocalRandomTest method testUnsizedDoublesCount.

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

Example 18 with Stream

use of java8.util.stream.Stream in project streamsupport by stefan-zobel.

the class ThreadLocalRandomTest method testUnsizedDoublesCountSeq.

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

Example 19 with Stream

use of java8.util.stream.Stream 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 20 with Stream

use of java8.util.stream.Stream in project streamsupport by stefan-zobel.

the class ThreadLocalRandomTest method testBoundedInts.

/**
 * Each of a parallel sized stream of bounded ints is within bounds
 */
public void testBoundedInts() {
    AtomicInteger fails = new AtomicInteger(0);
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 12345L;
    for (int least = -15485867; least < MAX_INT_BOUND; least += 524959) {
        for (int bound = least + 2; bound < least && bound < MAX_INT_BOUND; bound += 67867967) {
            final int lo = least, hi = bound;
            r.ints(size, lo, hi).parallel().forEach(x -> {
                if (x < lo || x >= hi)
                    fails.getAndIncrement();
            });
        }
    }
    assertEquals(fails.get(), 0);
}